Answer:
B. Based on analysis and opinions gathered from various departments
Step-by-step explanation:
Conference method of cost estimation envisages a widespread process in which head of different unit of organisation is consulted and their skill in their area of operation is tapped to make estimation of cost of the operation of different department.
The product of two numbers is 21. If the first number is -3, which equation represents this situation and what is the second number? A. The equation that represents this situation is x − 3 = 21. The second number is 24. B. The equation that represents this situation is 3x = 21. The second number is 7. C. The equation that represents this situation is -3x = 21. The second number is -7. D. The equation that represents this situation is -3 + x = 21. The second number is 18.
Option C
The equation that represents this situation is -3x = 21
The second number is -7
Solution:
The first number is -3
The product of two numbers is 21
Let the second number be "x"
The equation that represents this situation is:
Product of first and second number = 21
[tex]-3 \times x = 21\\\\-3x = 21[/tex]
Thus the equation is found
Solve the equation
-3x = 21
Divide both sides by -3
[tex]x = \frac{21}{-3}\\\\x = -7[/tex]
Thus the second number is -7
Answer:
C.
The equation that represents this situation is -3x = 21. The second number is -7.
Step-by-step explanation:
I just did it and got it right on edmentum/plato
hope this helps good luck
Two Neighbors in a rural area want to know the distance between their homes in miles. What should the Neighbors use as a conversion factor to covert 4,224 to miles
Answer:
x = 0.8 Mi
Step-by-step explanation:
for x = 4224 ft we can use the factor (1 Mi/5280 ft)
then
x = 4224 ft (1 Mi/5280 ft) = 0.8 Mi
Find an equation in standard form for the hyperbola with vertices at (0, ±9) and foci at (0, ±10).
y squared over 81 minus x squared over 100 = 1
y squared over 81 minus x squared over 19 = 1
y squared over 19 minus x squared over 81 = 1
y squared over 100 minus x squared over 81 = 1
Answer:
y² / 81 - x² / 19 = 1
Step-by-step explanation: See Annex ( vertices and foci in coordinates axis)
The equation in standard form for the hyperbola is:
x² / a² - y²/b² = 1 or y²/a² - x² / b² = 1
In cases of transverse axis parallel to x axis or y axis respectively.
As per given information in this case hyperbola has a transverse axis parallel to y axis the equation is
y²/a² - x² / b² = 1
a is a distance between center and vertex therefore a = 9
c is a distance between center and a focus c = 10
and b will be:
c² = a² + b² ⇒ b² = c² - a² ⇒ b² = (10)² - (9)² ⇒ b² = 100 - 81
b = √19
And the equation in standard form is:
y² / a² - x² / b² = 1
y² / ( 9 )² - x² / √(19)² ⇒ y² / 81 - x² / 19 = 1
Answer:
B
Step-by-step explanation:
How do you do this on the calculator?
Answer:
B) -3.464
Step-by-step explanation:
∫₀³ g'(x) cos²(2g(x) + 1) dx
Using u substitution:
u = 2g(x) + 1
du = 2g'(x) dx
½ du = g'(x) dx
When x = 0, u = 11.
When x = 3, u = -3.
½ ∫₁₁⁻³ cos²(u) du
You can use a calculator to solve this, or you can evaluate algebraically.
Use power reduction formula:
½ ∫ (½ + ½ cos(2u)) du
¼ ∫ du + ¼ ∫ cos(2u) du
¼ ∫ du + ⅛ ∫ 2 cos(2u) du
¼ u + ⅛ sin(2u) + C
Evaluating from u = 11 to u = -3:
[¼ (-3) + ⅛ sin(-6) + C] − [¼ (11) + ⅛ sin(22) + C]
-⁷/₂ + ⅛ sin(-6) − ⅛ sin(22)
−3.464
What is the probability of being dealt exactly three of a kind (like three kings or three 7’s, etc.) in a five card hand from a deck of 52 cards?
Answer:
P=0.00564
Step-by-step explanation:
From Exercise we have 52 cards.
We calculate the number of combinations to draw 5 cards from a deck of 52 cards. We get
{52}_C_{5}=\frac{52!}{5!(52-5)!}=2598960
We now count the number of favorable combinations:
{13}_C_{1} · {48}_C_{2}= 13 · \frac{48!}{2!(48-2)!}=14664
Therefore, the probabilitiy is
14664/2598960=0.00564
P=0.00564
Galen sold tickets of his church’s carnival for a total of $2,820. Children’s tickets cost $3 each and adult tickets cost $5 each. The number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. How many children’s ticket and how many adult tickets did he sell?
Answer:
615 children tickets
195 adults tickets
Step-by-step explanation:
Let the number of children’s tickets be c and the number of adult tickets be a.
Children’s ticket is $3 and adult’s is $5 for a total of $2,820. This means:
3c + 5a = 2,280
This is the first equation.
The number of children’s tickets sold is 30 more than 3 times that of the adults. This means
c = 3a + 30.
This is equation ii. We now substitute ii into I to yield:
3(3a+ 30) + 5a = 2,820
9a + 90 + 5a = 2,820
14a + 90 = 2,820
14a = 2820 - 90
14a = 2730
a = 2730/14 = 195 tickets
c = 3a + 30
c = 3(195) + 30 = 615
Final answer:
By setting up a system of equations based on the total sales and the relationship between the number of adult and children's tickets sold, we can solve to find that Galen sold 130 adult tickets and 420 children's tickets for the church's carnival which is 195.
Explanation:
The question involves finding the number of children's and adult tickets sold by Galen for a church's carnival, given the total sale amount and the price of each ticket type. To solve this, we can set up a system of equations based on the information provided:
The total amount from ticket sales is $2,820.Children's tickets are $3 each, and adult tickets are $5 each.The number of children's tickets sold was 30 more than 3 times the number of adult tickets sold.Let x be the number of adult tickets sold and y be the number of children's tickets sold. The problem statements can be translated into two equations:
3y + 5x = 2820 (total sales equation)y = 3x + 30 (relationship between tickets sold)Substituting the second equation into the first gives us:
3(3x + 30) + 5x = 2820
Solving for x, we find that Galen sold 130 adult tickets. Using the relationship between x and y, we then find that 420 children's tickets were sold.
14x= 2730
x=195.
functions w and z are both linear functions of x which statement comparing the functions is true? select all that apply
Function Z has a greater slope and a higher y-intercept compared to Function W, making Function Z steeper and intercepting the y-axis at a higher point. Here options A and B are correct.
The two lines in the graph represent linear functions, which means they can be expressed in the following form:
y = mx + b
where:
m is the slope of the line, which tells you how steep the line is and in which direction it is slanted.
b is the y-intercept, which is the point where the line crosses the y-axis.
x is the independent variable, and y is the dependent variable.
The steeper a line is, the greater the absolute value of its slope. A positive slope means the line slants upwards from left to right, while a negative slope means it slants downwards from left to right.
In the image, you can see the equations for the two lines are:
Function W: y = 2x - 5
Function Z: y = 3x - 2
By looking at the equations, we can see that:
The slope of function W is 2.
The slope of function Z is 3.
Since 3 is greater than 2, we can say that the slope of function Z is greater than the slope of function W. This means that function Z is steeper than function W.
The y-intercepts of the lines are also different:
The y-intercept of function W is -5.
The y-intercept of function Z is -2.
Since -2 is greater than -5, we can say that the y-intercept of function Z is greater than the y-intercept of function W.
Therefore, the following statements comparing the functions are true:
The slope of Function W is less than the slope of Function Z
The y-intercept of Function W is less than the y-intercept of Function Z. Here options A and B are correct.
Function W has a slope less than Function Z, and its y-intercept is also less than that of Function Z.(options a and d)
To compare the functions W and Z, let's analyze their slopes and y-intercepts:
Function W: [tex]\(y = 0.5x - 1\)[/tex]
Function Z: Given table of values
a. The slope of Function W is [tex]\(0.5\).[/tex]
b. The slope of Function Z can be calculated using the given points. We choose two points: [tex]\((-2, -2.5)\)[/tex] and [tex]\((4, -1)\)[/tex]. Using the slope formula:
[tex]\[m = \frac{{y_2 - y_1}}{{x_2 - x_1}}\][/tex]
[tex]\[m = \frac{{-1 - (-2.5)}}{{4 - (-2)}}\][/tex]
[tex]\[m = \frac{{1.5}}{{6}}\][/tex]
[tex]\[m = 0.25\][/tex]
c. The y-intercept of Function W is -1, while the y-intercept of Function Z is the y-value when x=0, which is -2.
d. The y-intercept of Function W is greater than the y-intercept of Function Z.
e. To find the y-value when x=-4 for Function W, substitute x=-4 into the equation of Function W:
[tex]\[y = 0.5(-4) - 1 = -3\][/tex]
For Function Z, there is no direct way to determine the y-value when x=-4 as we only have specific points provided, not a continuous equation.
f. The y-value when x=-4 for Function W is not greater than the y-value when x=-4 for Function Z.
Therefore, the correct statements are:
a. The slope of Function W is less than the slope of Function Z.
d. The y-intercept of Function W is less than the y-intercept of Function Z.
The question probable maybe:
Given in the attachment
If there are 52 cards in a deck with four suits (hearts, clubs, diamonds, and spades), how many ways can you select 5 diamonds and 3 clubs?
Answer:
[tex] 12C5 *(12C3) = 792*220 =174240 ways[/tex]
Step-by-step explanation:
For this case we know that we have 12 cards of each denomination (hearts, diamonds, clubs and spades) because 12*4= 52
First let's find the number of ways in order to select 5 diamonds. We can use the combinatory formula since the order for this case no matter. The general formula for combinatory is given by:
[tex] nCx = \frac{n!}{x! (n-x)!}[/tex]
So then 12 C5 would be equal to:
[tex] 12C5 = \frac{12!}{5! (12-5)!}=\frac{12!}{5! 7!} = \frac{12*11*10*9*8*7!}{5! 7!}= \frac{12*11*10*9*8}{5*4*3*2*1}=792[/tex]
So we have 792 was in order to select 5 diamonds from the total of 12
Now in order to select 3 clubs from the total of 12 we have the following number of ways:
[tex] 12C3 = \frac{12!}{3! 9!}=\frac{12*11*10*9!}{3! 9!} =\frac{12*11*10}{3*2*1}=220[/tex]
So then the numbers of ways in order to select 5 diamonds and 3 clubs are:
[tex] (12C5)*(12C3) = 792*220 =174240 ways[/tex]
Can anyone answer this question?
It's confusing and i'd like explanation as well!
Answer:
D. 286 deg
Step-by-step explanation:
Think of both triangles as just one single large triangle.
The exterior angles at the bottom have measure 127 deg.
That means the two interior angles at the bottom have measure
180 deg - 127 deg = 53 deg
The measures of the interior angles of triangle add to 180 deg.
The upper interior angle has measure:
180 deg - 53 deg - 53 deg = 74 deg
A full circle has 360 degrees.
Angle r is a full circle minus the upper interior angle of the combined triangle.
r = 360 deg - 74 deg
r = 286 deg
describe the long-term behavior
Answer:
a. Slant asymptote with a slope of 5
Step-by-step explanation:
Dividing out the polynomials, you get ...
[tex]\dfrac{5x^2-x+13}{x+10}=5x-51+\dfrac{523}{x+10}[/tex]
As the magnitude of x gets large, the fraction goes to zero, and the behavior matches the line ...
y = 5x -51
This is a slant asymptote with a slope of 5 and a non-zero y-intercept.
Which expression represents the area of triangle ABC in square meters?
Triangle A B C has a base of 57 meters and a height of 14 meters.
One-half times 14 times 57
One-half times 14 times 64
One-half times 24 times 40
One-half times 24 times 57
Answer:
Answer is (A) One-half times 14 times 57
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The cost for a cell phone service is $75 per month plus $0.17 per minute. Which expression shows the monthly cost for the phone if x represents the number of minutes?
Answer:
we can use the variable c to represent the monthly cost
75+0.17x=c
Step-by-step explanation:
The expression shows the monthly cost for the phone if x represents the number of minutes if The cost for a cell phone service is $75 per month plus $0.17 per minute, is y = 75 + 0.17x.
What is equation?An assertion that two mathematical expressions have equal values is known as an equation. An equation simply states that two things are equal. The equal to sign, or "=," is used to indicate it.
Given:
The cost for a cell phone service is $75 per month plus $0.17 per minute,
Write the equation as shown below,
Total cost = Cost for a month + per minute charge × total use in minutes,
Assume the total cost is y, and the use of minute is x then,
y = 75 + 0.17 × x
y = 75 + 0.17x
Thus, the monthly cost for the phone is 75 + 0.17x.
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Before climbing, carlos wants to know the height of the rock wall he will climb. He places a mirror on the ground between him and the base of the wall, so he can see rhe top of the wall in the mirror. The mirror is 4 ft from carlos and 36 ft from the base of the wall. Carlos is 5.8 fr tall
Answer:
The rock is 52.2 feet high
Step-by-step explanation:
Similar Triangles
The triangle formed by the rock, mirror and the ground is similar to the triangle formed by Carlos, the mirror and the ground (see image below). This means its sides are proportional, and
[tex]\displaystyle \frac{H}{h}=\frac{X}{x}[/tex]
We want to calculate the height of the rock, thus we solve for H
[tex]\displaystyle H=\frac{h.X}{x}[/tex]
[tex]\displaystyle H=\frac{5.8\times 36}{4}=52.2 feet[/tex]
[tex]\boxed{\text{The rock is 52.2 feet high}}[/tex]
Final answer:
Using the properties of similar triangles and the distances between Carlos, the mirror, and the wall, we determined the height of the rock wall to be 52.2 ft.
Explanation:
Before climbing, Carlos wants to know the height of the rock wall he will climb. To determine the height of the wall, we can use the properties of similar triangles formed by Carlos's height and the distances between him, the mirror, and the wall. The mirror effectively creates two sets of similar triangles, one involving the actual height of Carlos and the other involving the perceived height of the rock wall in the mirror.
Carlos's height is 5.8 ft. The distance from Carlos to the mirror is 4 ft, and the distance from the mirror to the wall is 36 ft. Since Carlos can see the top of the wall in the mirror placed 4 ft away from him, we can use the ratio of distances and heights to determine the wall's height. The setup is based on the principle that the ratio of the distance from Carlos to the mirror is to the distance from the mirror to the base of the wall as Carlos's height is to the unknown height of the wall.
Using the ratio 4:36, we can set up a proportion, keeping in mind that similar triangles have corresponding sides that are in proportion. Thus, the height of the wall is to Carlos's height of 5.8 ft as 36 ft is to 4 ft. This gives us the equation: Height of wall / 5.8 = 36 / 4. Calculating this, we find that the height of the wall is 52.2 ft.
PLEASE HELPPPP Which value is equivalent to cos10∘?
Answer:
sin 80
Step-by-step explanation:
30 POINTS! Solve the following equation for l. A = 2πr + πrl. Explain each step.
Answer:
l = [tex]\frac{A-2\pi r}{\pi r}[/tex]
Step-by-step explanation:
Given
A = 2πr + πrl ( isolate the term in l by subtracting 2πr from both sides )
A - 2πr = πrl ( divide both sides by πr )
[tex]\frac{A-2\pi r}{\pi r}[/tex] = l
Answer: l = A/πr - 2
Step-by-step explanation:
The given equation is
A = 2πr + πrl
The first step is to subtract 2πr from the left hand side and the right hand side of the equation. It becomes
A - 2πr = 2πr + πrl - 2πr
A - 2πr = πrl
The next step is to divide the left hand side and the right hand side of the equation by πr. It becomes
(A - 2πr)/πr = πrl/πr
l = (A - 2πr)/πr
I = A/πr - 2πr/πr
I = A/πr - 2
Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played She found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times Use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time Mahnoor walks in.
Answer:
Type of music Country Rock & roll Blues
Observed number 11 17 8
Probabilities P(x) 11/36 17/36 8/36
Step-by-step explanation:
The probabilities can be calculated as
P(x)= observed number of times/ Total number of times.
The probability distribution for the type of music restaurant playing is
Type of music Country Rock & roll Blues Total
Observed number 11 17 8 36
Probabilities P(x) 11/36 17/36 8/36 1
Find the exact values for sin theta, cos θ, and tan θ. A right triangle has a vertical side of length 12, a horizontal side of length 35, and a hypotenuse of length 37. The angle formed by the sides of lengths 35 and 37 is labeled θ.
Answer:
SinƟ = 12/37
CosƟ =35/37
TanƟ = 12/35
Step-by-step explanation:
The diagram of the triangle is attached
Using SOH CAH TOA
SinƟ = Opposite/Hypotenuse
SinƟ = 12/37
CosƟ= adjacent/Hypo tenuse
CosƟ =35/37
TanƟ=Opposite/Adjacent
TanƟ = 12/35
A car can travel 25 miles per gallon on the high way and 20 miles in the city. The car's gas tank can hold 21 gallons. If the car traveled 500 miles on a full tank of gas, how many were used for city driving?
Answer: 5 gallons of gas were used for city driving.
Step-by-step explanation:
Let x represent the number of gallons of gas that the car used on the highway.
Let y represent the number of gallons of gas that the car used in the city.
The car's gas tank can hold 21 gallons. This means that
x + y = 21
A car can travel 25 miles per gallon on the high way and 20 miles in the city. If the car traveled 500 miles on a full tank of gas, it means that
25x + 20y = 500 - - - - - - - - - -1
Substituting x = 21 - y into equation 1, it becomes
25(21 - y) + 20y = 500
525 - 25y + 20y = 500
- 25y + 20y = 500 - 525
- 5y = - 25
y = - 25/ - 5
y = 5
x = 21 - y = 21 - 5
x = 16
The number of miles used for city driving is: [tex]\[{100}\][/tex].
To determine how many miles were used for city driving, we start by defining the variables and equations based on the problem's information:
1. Let \( x \) be the number of miles driven on the highway.
2. Let \( y \) be the number of miles driven in the city.
Given the problem, we have the following information:
- The car traveled a total of 500 miles: [tex]\( x + y = 500 \)[/tex]
- The car's gas consumption rates are 25 miles per gallon on the highway and 20 miles per gallon in the city.
- The gas tank holds 21 gallons.
Next, we set up the equation for total gas consumption:
[tex]\[\frac{x}{25} + \frac{y}{20} = 21\][/tex]
We now have a system of two equations:
[tex]1. \( x + y = 500 \)\\2. \( \frac{x}{25} + \frac{y}{20} = 21 \)[/tex]
To solve this system, we start with the first equation:
[tex]\[x = 500 - y\][/tex]
Substitute [tex]\( x = 500 - y \)[/tex] into the second equation:
[tex]\[\frac{500 - y}{25} + \frac{y}{20} = 21\][/tex]
Next, we find a common denominator to simplify the left-hand side of the equation. The common denominator for 25 and 20 is 100:
[tex]\[\frac{500 - y}{25} = \frac{500 - y}{25} \cdot \frac{4}{4} = \frac{4(500 - y)}{100} = \frac{2000 - 4y}{100}\]\[\frac{y}{20} = \frac{y}{20} \cdot \frac{5}{5} = \frac{5y}{100}\]\\[/tex]
So the equation becomes:
[tex]\[\frac{2000 - 4y + 5y}{100} = 21\][/tex]
Combine the terms in the numerator:
[tex]\[\frac{2000 + y}{100} = 21\][/tex]
Multiply both sides by 100 to eliminate the fraction:
[tex]\[2000 + y = 2100\][/tex]
Subtract 2000 from both sides to solve for \( y \):
[tex]\[y = 100\][/tex]
Thus, the number of miles used for city driving is:
[tex]\[{100}\][/tex].
Have of u is less than equal to 43
The question is incomplete. The complete question is here;
Half of u is less than or equal 43, find the greatest possible value of u
The greatest possible value of u is 86
Step-by-step explanation:
To solve an inequality:
Write the inequalitySeparate the variable in one side and the numerical term in the other sideDivide both side by the coefficient of the variable, remember if the coefficient is negative reverse the sign of the inequalityThe solution of the inequality is all possible values of the variable∵ [tex]\frac{1}{2}[/tex] u ≤ 43
- Divide both sides by [tex]\frac{1}{2}[/tex]
∴ u ≤ 86
- That means u could be any numbers less than or equal 86
∵ You need the greatest possible value of u
∴ u = 86
The greatest possible value of u is 86
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If two triangles are congruent, which of the following statements must be true? Check all that apply.
Answer:
All statements are correct for two congruent triangles
Step-by-step explanation:
If two triangles are congruent than the rules states that
Triangles are congruent when all corresponding sides and interior angles are congruent. The triangles will have the same shape and size, but one may be a mirror image of the other.
As the fig shows two triangle
Δ PQR
Δ LMN
All three corresponding sides of triangle are congruent
all three corresponding angles are congruent
Both triangle are of same size
Both are of same shape
hence all the statements are CORRECT
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A hot air balloon is descending at a rate of 2.0 m/s when a passenger drops a camera. (a) If the camera is 40 m above the ground when it is dropped, how longdoes it take for the camera to reach the ground? 1 s (b) What is its velocity just before it lands? Let upward be thepositive direction for this problem. 2 m/s
Answer:
a.) 1.23 seconds
b.) 14 m/s
Step-by-step explanation:
a.) Before commencing the calculation, we need to specify the information.
Data:
acceleration dues to gravity, g = 9.81 m/s²
initial velocity u = 2.0 m/s
height, s = 40 m
t = ?
The formula for finding the distance is s = ut + 1/2at²
Therefore, 40 = 2t + 1/2×(9.81) ×t²
80 = 4t + 9.81 t²
Solving for t by the quadratic equation gives t = 1.23 s [Note the other negative value for t is rejected because there is no negative time]
b) The final velocity is given by the following equation:
v = u + at
where v = final velocity just before the camera lands on the ground
u = initial velocity
t = time taken
a = g = acceleration dues to gravity = 9.81 m/s²
Calculating gives
v = 2 + 9.81×1.23
= 14 m/s Ans
Nina purchased apples and strawberries. She purchased a total of 9 pounds of fruit and spent a total of $16.35. Strawberries cost $1.60 per pound and apples cost $ 1.99 per pound. How many pounds of each type of fruit did she buy?
Answer:
4 pounds of strawberries and 5 pounds of apples are bought.
Step-by-step explanation:
Given:
Total number of pounds of fruit = 9 pounds
Total money spent = $16.35
Cost of 1 pound of strawberry = $1.60
Cost of 1 pound of apple = $1.99
Let 'x' pounds of strawberries and 'y' pounds of apples are bought.
So, as per question:
The sum of the pounds is 9. So,
[tex]x+y=9\\\\y=9-x----1[/tex]
Now, total sum of the fruits is equal to the sum of 'x' pounds of strawberries and 'y' pounds of apples. So,
[tex]1.60x+1.99y=16.35----2[/tex]
Now, plug in the 'y' value from equation (1) in to equation (2). This gives,
[tex]1.60x+1.99(9-x)=16.35\\\\1.60x+17.91-1.99x=16.35\\\\Combining\ like\ terms, we get:\\\\1.60x-1.99x=16.35-17.91\\\\-0.39x=-1.56\\\\x=\frac{-1.56}{-0.39}=4\ pounds[/tex]
Now, from equation 1, we have:
[tex]y=9-4=5\ pounds[/tex]
Therefore, 4 pounds of strawberries and 5 pounds of apples are bought.
Confused! Need help please!! Will mark brainliest!
Find the value of x. Show all your work for full credit.
Yo sup??
This question can be solved by applying the properties of similar triangles
the triangle with sides 5x and 20 is similar to the triangle with sides 45 and 35
The similarity property used here is called AAA ie angle angle angle property as all the three angles of the 2 triangles are equal.
therefore we can say
5x/45=20/36
x=5 units
Hope this helps
On Monday, Lou drives his ford escort with 28-inch tires, averaging x miles per hour. On Tuesday, Lou switches the tires on his car to 32-inch tires yet drives to work at the same average speed as on Monday. What is the percent change from Monday to Tuesday in the average number of revolutions that Lou’s tires make per second?(A) Decrease by 14.3%
(B) Decrease by 12.5%
(C) Increase by 14.3%
(D) Increase by 12.5%
(E) Cannot be determined with the given information.
Answer:
[tex] \% Change = \frac{|28-32|}{32} *100 = 12.5\%[/tex]
(B) Decrease by 12.5%
Step-by-step explanation:
For this case we know that the revolution is proportional to the circumference.
And we know that the average number of revolutions of 32 inch tires for Tuesday is higher than the original value of 28 inch tires for Monday.
We know that we have x mi/hr, so we can select a value fo x in order to find the average revolutions with the following formula:
[tex] Avg = \frac{x}{mi}[/tex]
Let's say that we select a value for x for example x= 28*32 = 896, since this value is divisible by 32 and 28.
If we find the average revolutions per each case we got:
Tuesday:
[tex] Avg = \frac{896}{32}=28[/tex]
Monday:
[tex] Avg = \frac{896}{28}=32[/tex]
And then we can find the % of change like this:
[tex] \% Change= \frac{|Final-Initial|}{Initial} *100[/tex]
And if we replace we got:
[tex] \% Change = \frac{|28-32|}{32} *100 = 12.5\%[/tex]
Because we are assuming that the initial amount is the value for Monday and the final value for Tuesday.
So then the best answer for this case would be:
(B) Decrease by 12.5%
Please Help Me With My Algebra Homework
Answer:
The maximum of the sinusoidal function is 5.
Step-by-step explanation:
The maximum of the sinusoidal function is 5.
La patinoar au venit dimineața 136 de copii, iar după-amiază de 3 ori mai mulți. Câți bani s-au încasat pe biletele vândute, dacă un bilet de intrare costă 15 lei?
Answer:
8,160 lei
Step-by-step explanation:
The question in English is
136 children came to the ice rink in the morning, and three times in the afternoon. How much money was collected on the tickets sold, if an entrance ticket costs 15 lei?
step 1
Find the total number of children that came to the ice rink
we know that
The number of children that came to the ice rink in the morning was 136
The number of children that came to the ice rink in the afternoon was (136*3)=408
To find out the total number of children that came to the ice rink , adds the number of children that came in the morning plus the number of children that came in the afternoon
so
[tex]136+408=544\ children[/tex]
step 2
To find out the total money collected, multiply the total number of children by the cost of one ticket entrance
so
[tex]544(15)=8,160\ lei[/tex]
Which of the following will always represent a function?
Group of answer choices
a list of ordered pairs
a list of numbers
an equation in the form y = mx + b
a table of pairs of numbers
Is −8c an even integer? Yes, because −8c = 2(−4c) + 1 and −4c is an integer. Yes, because −8c = 2(−4c) and −4c is an integer. No, because −8c = 2(−4c) and −4c is an integer. No, because −8c = 2(−4c) + 1 and −4c is an integer.
Answer:
Yes, because −8c = 2(−4c) and −4c is an integer
Step-by-step explanation:
We want to determine whether [tex]-8c[/tex] is an even integer.
Recall that even integers are of the form: [tex]2n[/tex]
Let us see if we can rewrite the given expression in the form 2n, where n is an integer.
Let us factor 2 to get:
[tex]-8c=2(-4c)[/tex]
If -4c is an integer and we let m=-4c,then
[tex]-8c=2(m)=2m[/tex], where m is an integer.
Therefore the answer is Yes, because −8c = 2(−4c) and −4c is an integer
Write a formula that describes the value of an initial investment of $100 that loses its value at a rate of 80% per year compounded 6 times. per year.
Answer:
see below
Step-by-step explanation:
The formula is the same whether the change in a compounding period is positive or negative. Here, it is negative.
A = P(1 +r/n)^(nt)
for P = 100, r = -0.08, n = 6. So, you have ...
A = 100(1 -0.08/6)^(6t)
Answer: option d is the correct answer
Step-by-step explanation:
Initial amount is $100. This means that the principal is
P = 100
It was compounded 6 times in a year. So
n = 6
The rate at which the principal was compounded is 8%. So
r = 8/100 = 0.08
The number of years is t
The formula for compound interest is
A = P(1+r/n)^nt
A = total amount in the account at the end of t years.
Since the amount is reducing,
A = P(1-r/n)^nt
Therefore
A = 100 (1 - 0.08/6)^6t
PLLLLLEEASSEE HELLPP
Which transformations have been performed on the graph of f(x)=\sqrt[3]{x} to obtain the graph of g(x)= -\frac{1}{2} \sqrt[3]{x-9}
Select EACH correct answer
A. reflect the graph over the x-axis
B. translate the graph down
C. translate the graph to the right
D. translate the graph up
E. stretch the graph away from the x-axis
F. translate the graph to the left
G. compress the graph closer to the x-axis
Answer:
The correct answer is compress the graph closer to the x axis
reflect the graph over the x axis
translate the graph to the right
Step-by-step explanation:
I just took the test
The correct answer is (A)(C)(G) because to transform the graph, we first reflect it over the x-axis, then translate it to the right, and finally compress it closer to the x-axis.
To determine the transformations applied to the graph of [tex]\( f(x) = \sqrt[3]{x} \)[/tex] to obtain the graph of [tex]\( g(x) = -\frac{1}{2} \sqrt[3]{x-9} \)[/tex], let's analyze each component of the transformation step-by-step.
Given [tex]\( f(x) = \sqrt[3]{x} \)[/tex] and [tex]\( g(x) = -\frac{1}{2} \sqrt[3]{x-9} \)[/tex], the transformations are as follows:
1. Horizontal Shift:
The term [tex]\( x-9 \)[/tex] inside the function indicates a horizontal shift.
Specifically, it shifts the graph to the right by 9 units.
2. Vertical Compression and Reflection:
The coefficient [tex]\( -\frac{1}{2} \)[/tex] outside the cube root function indicates a vertical transformation.
The negative sign reflects the graph over the x-axis.
The factor [tex]\( \frac{1}{2} \)[/tex] compresses the graph closer to the x-axis.
The complete question is:
Which transformations have been performed on the graph of [tex]f(x)=\sqrt[3]{x}[/tex] to obtain the graph of [tex]g(x)= -\frac{1}{2} \sqrt[3]{x-9}[/tex] ?
A. reflect the graph over the x-axis.
B. translate the graph down.
C. translate the graph to the right.
D. translate the graph up.
E. stretch the graph away from the x-axis.
F. translate the graph to the left.
G. compress the graph closer to the x-axis.