There are 20 dimes and 80 quarters
Solution:
Let "d" be the number of dimes
Let "q" be the number of quarters
1 dime = $ 0.10
1 quarter = $ 0.25
Panchito Pantera has 100 coins
Therefore,
number of dimes + number of quarters = 100
d + q = 100 ----------- eqn 1
He has a total of $22. Thus we frame a equation as:
number of dimes x 0.10 + number of quarters x 0.25 = 22
[tex]d \times 0.10 + q \times 0.25 = 22[/tex]
0.1d + 0.25q = 22 --------- eqn 2
Let us solve eqn 1 and eqn 2
From eqn 1,
d = 100 - q ------- eqn 3
Substitute eqn 3 in eqn 2
0.1(100 - q) + 0.25q = 22
10 - 0.1q + 0.25q = 22
0.15q = 22 - 10
0.15q = 12
Divide both sides by 0.15
q = 80
Substitute q = 80 in eqn 3
d = 100 - 80
d = 20
Thus there are 20 dimes and 80 quarters
Explain the difference between lateral and surface area below. If you are given the total surface area, then how could you determine the lateral surface area?
Lateral surface area is given as the area of all sides of a figure excluding the area of the base where as surface area is the sum of the areas of all faces of the solid.
Step-by-step explanation:
Lateral surface area is given as the area of all sides of a figure excluding the area of the base where as surface area is the sum of the areas of all faces of the solid.
If given total surface area, you can find lateral surface area by subtracting the area of the base from the surface area of the solid.
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Lateral surface area refers to the area of the sides only, while total surface area includes the area of all faces. To compute the lateral surface area from the total surface area, subtract the areas of the bases. This process isolates the lateral surface area.
The difference between lateral and surface area is critical in understanding geometric shapes. In contrast, the total surface area includes the area of all the faces, including the bases. For example, in a cylinder, the lateral surface area is the area of the side rolled out into a rectangle, while the total surface area includes the areas of the upper and lower two circular bases.
If you are given the total surface area of a cylinder and need to determine the lateral surface area, you can use the following steps:
Identify and compute the area of the two bases. A cylinder's base is a circle with an area of πr², where r is its radius.Subtract the combined base area from the total surface area.The result will be the lateral surface area.Brandus bought 1/3 pound of ground turkey and 1/4 pound of ground beef to make sausages. How many pounds of meat did he buy?
Brandus bought a total of 7/12 pounds of meat by adding together 1/3 pound of ground turkey and 1/4 pound of ground beef.
To find out how much meat Brandus bought, you need to add the weights of the ground turkey and the ground beef. Brandus bought 1/3 pound of ground turkey and 1/4 pound of ground beef.
Convert the fractions to have a common denominator:
1/3 = 4/12 (multiply both the numerator and the denominator by 4)
1/4 = 3/12 (multiply both the numerator and the denominator by 3)
Add the two amounts:
4/12 + 3/12 = 7/12
Hence, Brandus bought 7/12 pounds of meat in total to make sausages.
simplify the expression -2-17+12-(-4)
Answer:
- 3
Step-by-step explanation:
hello:
-2-17+12-(-4)=(-2-17)+(12+4)= -19+16= -3
Answer:
-3
Step-by-step explanation:
-2-17+12-(-4)
From BODMAS, we begin witht the bracket
=-2-17+12+4
= -2-17+16
= -19+16
= -3
The quotient of a number and 4 is 7-
Answer:
-7/4
Step-by-step explanation:
Did you mean -7?
Graph if f (x) =2x^-10 for find f(5)
Answer:
[tex]f(5)=2.048*10^{-7}[/tex]
Step-by-step explanation:
We have that [tex]f(x)=2x^{-10}[/tex], we want to find [tex]f(5)[/tex].
We can rewrite this function with positive index to get:
[tex]f(x)=\frac{2}{x^{10}}[/tex]
We need to substitute [tex]x=5[/tex] into the given function to get:
[tex]f(5)=\frac{2}{5^{10}}[/tex]
This implies that:
[tex]f(5)=\frac{2}{9765625}[/tex]
In scientific notation:
[tex]f(5)=2.048*10^{-7}[/tex]
tommy is buying used books for school. the price of the books is $180. he uses the 30%-off student discount and there is a 4% sales tax.
Answer:
131.04
Step-by-step explanation:
I did it and got it right.
Tommy have to pay $133.2
What is Percentage?To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.
Given:
Price of book = $180
Discount= 30% off
and, tax = 4%
So, the total discount will be = 30- 4= 26%
Then, price after 26% discount
= 180 - 26% of 180
= 180 - 46.8
= 133.2
Hence, Tommy have to pay $133.2
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Find the slope of the graph
EASY 40 POINTS
Juanita has 102 beads to make n necklaces. Each necklace will have 17 beads.
Answer:
There will be 6 necklaces
Step-by-step explanation:
102/17 is 6
Answer:Juanita can make 6 bracelets.
Step-by-step explanation:
Divide 102 and 17 then you should get 6.
The geometric sequence bn is defined below. Find b3.
B1 = 54
R= -1/3
Answer:
6
Step-by-step explanation:
hello :
the nth term is : Bn= B1×R^n-1
calculate B3 (when n=3) R= -1/3 B1 = 54
B3 =54×(-1/3)^(3-1)
B3 =54×(1/9)=6
Knowing about geometric sequences we have that its third term will be given by 6
What is the geometric sequences formula?Geometric Progression (PG) is a numerical continuity in which the division of a term with its previous one, except the first, will result in a single value, the so-called ratio (q), that is: PG: (a1, a2, a3, a4, ..., an), where q = (a2/a1 = a3/a2 = a4/a3,.
Given that:
B1 = 54R= -1/3The formula of the term will be:
[tex]Bn= B1*R^n-1[/tex]
Calculated the B3 we have:
[tex]B3 =54*(-1/3)^{(3-1)}\\B3 =54*(1/9)=6[/tex]
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(SAT Prep) Find the value of x in each of the following exercises:
Look at picture! WILL MARK BRAINLIEST !!
PLS ANSWER FAST
The angles of a triangle always add to 180°. In the triangle with 35°, we know that the other angle is 55° since 180 - 90 - 35 = 55. Know we know that 55° angle, 60° angle and the unknown angle will add to 180° because they form a flat line. So 180 - 60 - 55 = 65. Next, we subtract 65° and 90° from 180° to get the last unknown angle, which is 25°. Lastly we subtract 25° from 180 because the x angle and the 25° angle form a a flat line. 180 - 25 = 155.
I believe the measure of angle x is 155°.
The required value of the exterior angle x = 155°
A figure of angle in triangles is shown in which the value of x is to be determined.
The angle can be defined as the one line inclined over another line.
From the image attached below From the orange triangle,
The sum of the interior angle of a triangle is 180°,
35 + 90 + z =180
z = 180 -90 - 35
z = 55
Now, the sum of the angle
z + y + 60 = 180
55 + y + 60 = 180
y = 180 -60 - 55
y = 65
Now angle x can be given as the sum of the remote angle is equal to exterior angle x.
35 + z + y = x
35 + 55 + 65 = x
x = 155
Thus, the required value of the exterior angle x = 155°
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NO CAP 45 PTS I NEED A 100
Which situation is best modeled by an exponential function?
A.the cost to rent a bicycle from a company that charges a flat rate plus x dollars per day
B.the amount of a substance remaining after x years if it is decreasing at a rate of 25% annually
C.the number of gas stations in a town that had 4 stations in 2010 and x new stations have opened each year since
D.the distance a car is from a fixed point if the car was originally 200 feet from that point and traveled at a speed of x miles per hour
The best scenario for an exponential function is Option B, as it describes a consistent percentage decrease annually, which is characteristic of exponential decay.
The situation that is best modeled by an exponential function is Option B, which describes the amount of a substance remaining after x years if it is decreasing at a rate of 25% annually. This exemplifies an exponential decay scenario where the rate of change of a quantity is directly proportional to its current value. Over time, the substance decreases by a consistent percentage, which is characteristic of exponential decay functions.
A key feature of exponential relationships is that they describe processes where the change at any given point is proportional to the current amount, which fits the description of a substance decreasing by a consistent percentage each year.
find the domain and range (0,1), (3,1), (3,9)
Answer:
domain={0,3}
range={1,9}
Step-by-step explanation:
PLEASE HELP (answer only if you now)
Answer:
y = 30
Step-by-step explanation:
If y varies directly with x, then you can make a ratio:
24/8
Simplify the ratio:
3/1
Y is always the first number/ on top in a ratio, that's where I get 24 over 8
3/1 means that y is triple x
so 10 * 3 is 30
P (2, 3) and Q (6, 10) are two points on the Cartesian plane.
Find the length of PQ
Find the coordinates of the midpoint of PQ
Find the equation of PQ
Step-by-step explanation:
Given:
[tex] (x_1, \: y_1 ) =(2, \:3)\:\:\&\:\: (x_2, \: y_2) =(6, \:10)[/tex]
[tex]l(PQ) = \sqrt{ {(x_1 - x_2)}^{2} + {(y_1 - y_2)}^{2}} \\ \\ = \sqrt{ {(2 - 6)}^{2} + {(3 - 10)}^{2}} \\ \\ = \sqrt{ {( - 4)}^{2} + {( - 7)}^{2}} \\ \\ = \sqrt{16 + 49} \\ \\ = \sqrt{65} \\ \\ \therefore \purple{ \boxed{ l(PQ) = 8.06 \: units}}\\\\[/tex]
Let S be the mid-point of PQ.
[tex]\therefore S = \{\frac{x_1+x_2}{2}, \:\:\frac{y_1+y_2}{2}\} \\\\
= \{\frac{2 +6}{2}, \:\:\frac{3+10}{2}\} \\\\
= \{\frac{8}{2}, \:\:\frac{13}{2}\} \\\\
\therefore S= \{4, \:\:6.5\} \\\\[/tex]
Equation of line PQ is given as:
[tex] \frac{y-y_1}{y_1 - y_2}=\frac{x-x_1}{x_1 - x_2} \\\\
\therefore \frac{y-3}{3 - 10}=\frac{x-2}{2 - 6} \\\\
\therefore \frac{y-3}{-7}=\frac{x-2}{-4} \\\\
\therefore \frac{y-3}{7}=\frac{x-2}{4} \\\\
\therefore 4(y-3)=7(x-2)\\\\
\therefore 4y-12=7x-14\\\\
\therefore 7x-14 - 4y + 12=0\\\\
\red{\boxed {\therefore 7x-4y - 2 =0}} [/tex]
Answer:
length = square root of ((2-6)^2)+((3-10)^2) = square root (of) 16+49
square root of 65 = 8.062257748 = approx 8.1
midpoint = (x1+x2)/2 , (y1+y2)/2
= 2+6 /2 , 3+10 /2
=8/2 , 13/2
= 4, 6.5 (midpoint)
equation= y=mx+c
m(gradient) = (y2-y1)/(x2-x1) or (y1-y2)/(x1-x2)
= so, (3-10)/(2-6) (y1-y2)/(x1-x2)- i normally use this one
= -7/-4 = 1.75
so y=1.75x+c
plug in the values from any one of them (2,3) or (6,10)
to get
for example: 3=1.75*2+c
3=3.5+c
-0.5=c
now we get the equation y=1.75x+(-0.5)
you always have to have a plus( +(-0.5)) since the equation is y=mx+c
What is the graph for the above relationship?
A. 1st Graph
B. 2nd Graph
C. 3rd Graph
D. 4th Graph
Second graph.
Explanation:Hello! You haven't provided any relationship, but I found it on the internet and it is the table attached below. The point-slope form of the equation of a line is given by:
[tex]y=mx+b[/tex]
So:
[tex]y-Intercept: \\ \\ (0,b) \\ \\ \\ From \ the \ table: \\ \\ (0,b)=(0,46) \\ \\ So: \\ \\ b=46[/tex]
Finding the slope:
[tex]m=\frac{39-46}{1-0} \\ \\ m=-7[/tex]
So the equation of the line is:
[tex]y=-7x+46[/tex]
From the graphs, only option 2 and 4 have negative slope and only option 2 passes through [tex](0,46)[/tex]
Conclusion: Correct option is second graph.
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solve the following .72 divide by 1/3
Answer:
the answer is to 72 divided by 1/3 is 216
The result of the division 72 divide by 1/3 is : 216.
Here, we have,
given that,
What is 72 divide by 1/3
we know that,
72 divide by 1/3 is the same thing as 72 times 3/1.
i.e. 72 ÷ 1/3
=> 72 × 3/1
now, we know that,
So 72 x 3 = 216
=> 216/1
And 216 divided by 1 is 216.
so, we get,
Hence, The result of the division 72 divide by 1/3 is : 216.
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Frank exercises 60 minutes a day if he does this every day for a one year how many minutes will he have exercised
Find the exact values below. if applicable, click on "undefined". cot7pi/6
Yo sup??
cot(7π/6)=cot(π+π/6)
=cot(π/6)
=√3
Hope this helps
Answer:
[tex]\sqrt{3}[/tex]
Step-by-step explanation:
Using the trigonometric identity
cot x = [tex]\frac{1}{tanx}[/tex]
Consider tan([tex]\frac{7\pi }{6}[/tex] )
[tex]\frac{7\pi }{6}[/tex] is an angle in the third quadrant where tan > 0
Thus tan([tex]\frac{7\pi }{6}[/tex] ) = tan([tex]\frac{7\pi }{6}[/tex] - π ) = tan([tex]\frac{\pi }{6}[/tex] ) = [tex]\frac{1}{\sqrt{3} }[/tex]
Hence
cot([tex]\frac{7\pi }{6}[/tex] ) = [tex]\frac{1}{\frac{1}{\sqrt{3} } }[/tex] = [tex]\sqrt{3}[/tex]
What is the simplified form of
Answer:
A. 2x/3
Step-by-step explanation:
4xsqrt5-2xsqrt5/3sqrt5
4x-2xsqrt5/3sqrt5
2xsqrt5/3sqrt5
2x/3
PLS ANSWER AND LOOK UNDER THE QUESTION TOO :)))
What is the solution to the following system of linear equation?
y= 2x+3
y= -1/2x -2
A. (2,1)
B. (-1,-2)
C. (1,2)
D. (-2,-1)
if anyone's parents dont accept them for the way they are or they dont feel accepted then i just wanted to say them im ur new fam now and i luv ya <333333333333333
D. (-2,-1)
Hope it helps you.
Answer:
D
Step-by-step explanation:
Given the 2 equations
y = 2x + 3 → (1)
y = - [tex]\frac{1}{2}[/tex] x - 2 → (2)
Since both equations express y in terms of x, equate the right sides
2x + 3 = - [tex]\frac{1}{2}[/tex] x- 2
Multiply through by 2 to clear the fraction
4x + 6 = - x - 4 ( add x to both sides )
5x + 6 = - 4 ( subtract 6 from both sides )
5x = - 10 ( divide both sides by 5 )
x = - 2
Substitute x = - 2 into (1) for corresponding value of y
y = 2(- 2) + 3 = - 4 + 3 = - 1
Solution is (- 2, - 1 ) → D
What k/8-1=-3 what is the answer for k
I needs to pour 2 gallons of water into his fish tanks. All he has is a measuring cup how many cups of water should he put in the tank? Explain?
Answer:
32 cups of water is needed to fill a 2 gallon water tank.
Step-by-step explanation:
Here, the amount of water to be filled in the fish tank = 2 gallons
The utensil to measure water = a measuring cup
Now, as we know:
1 quart = 0.25 gallons
⇒ 4 pints = 1 gallons
⇒ 8 pints = 2 gallons
Also, 1 pint = 0.5 quart
⇒ 2 pints = 1 quarts
⇒ 8 pints = 4 quarts
⇒ 16 pints = 8 quarts
Again, 1 cup = 0.5 pint
⇒ 2 cup = 1 pint
⇒ 32 cup = 16 pints
Hence, 32 cups of water is needed to fill a 2 gallon water tank.
A savings account of $5,000 for 12 years, compounded at an annual interest rate of 6%
Answer: 3600
Step-by-step explanation:
5 (2 x + 1 )= 50 please help me
Answer:
x = 4.5.
Step-by-step explanation:
5(2x + 1) = 50
10x + 5 = 50
10x = 50 - 5
10x = 45
x = 4.5.
look at the images please help
I WILL MARKTHE BRAINLEST PLEASE HELP
Answer:
not too sure sorry :(
Step-by-step explanation:
The FitnessGram™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. [beep] A single lap should be completed each time you hear this sound. [ding] Remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.
PLS HELP!!!
An ice cream truck sells ice cream between 2 p.m. and 10 p.m. each night in the summer. At the end of the night, the driver calculates his profits and makes a graph to analyze the data. What is the average rate of change for the data from the 5th hour to the 8th hour? Be sure to include the correct units of measurement.
7 hours
−7 dollars per hour per hour
21 dollars
−21 dollars per hour per hour
Answer:
[tex]\large\boxed{-7\text{ }dollars\text{ }per\text{ }hour}[/tex]
Explanation:
The average rate of change is the ratio of the change in the dependent variable (Money Earned) to the change in the independent variable (Hour).
Thus, the average rate of change for the data from the 5th hour to the 8th hour is calculated using the points (5, 96) and (8, 75) from the graph. This is, what happens in the middle does not affect the average rate of change.
[tex]Rate\text{ }of\text{ }change=(\$75-\$96)/(8hour-5hour)[/tex]
[tex]Rate\text{ }of\text{ }change=(-\$21)/(3hour)=-7\text{ }dollars\text{ }per\text{ }hour[/tex]
Answer:
−7 dollars per hour per hour
Step-by-step explanation:
took test
If the nth term of an A.P. is 3n+2, find the sum of first 'n terms of that AP.
Answer:
[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] (3n + 7)
Step-by-step explanation:
We require to find the first term a₁ and the common difference d
The n th term is given by 3n + 2, thus
a₁ = 3(1) + 2 = 3 + 2 = 5
a₂ = 3(2) + 2 = 6 + 2 = 8
d = 8 - 5 = 3
[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] [ 2a₁ + (n - 1)d ], substitute values
[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] [ (2 × 5) + 3(n - 1) ] = [tex]\frac{n}{2}[/tex] (10 + 3n - 3) = [tex]\frac{n}{2}[/tex] (3n + 7)
Answer:
Sn = (3/2)n² + (7/2)n
Step-by-step explanation:
Sn = (n/2)[2a + (n-1)d]
a = 3(1)+2 = 5
d = second term - 5 = 3(2)+2 - 5 = 3
Sn = (n/2)[2(5) + (n-1)(3)]
= (n/2)[10 + 3n - 3]
= (n/2)(7 + 3n)
Sn = (3/2)n² + (7/2)n
Rectangle URST undergoes a dilation centered at the origin. The result is rectangle U'R'ST. Which rule describes
the dilation?
Plsssss help
Answer:
The rule depends on the scale factor.
Step-by-step explanation:
Hi there,
1) Many, I'd say mostly, dilations is centered at the origin (0,0) of the cartesian plane. Like the picture below.
2) So now, what's left to do is what is the scale factor? What coefficient that multiplies the original rectangle URST, will result the U'R'S'T'?
3) Since no coordinates, no options or any numerical value were given, then I've made one example.
Check below
If you do have the coordinates of each point then divide each coordinate this way
[tex]\frac{U'(x,y)}{U(x,y)}=\frac{R'(x,y)}{R(x,y)}=\frac{S'(x,y)}{S(x,y)}=\frac{T'(x,y)}{T(x,y)}=scale \:factor\\\frac{U'(-4,4)}{U(2,2)}\Rightarrow U'=2U\\(x,y)=D2(x,y)[/tex]
Answer:
you didn't put a picture
Step-by-step explanation:
An ecologist wishes to find the height of a redwood tree that is on the other side of a creek, as shown in the figure below. From point A he finds that the angle of elevation to the top of the tree is 10.4°. He then walks 24.8 feet at a right angle from point A to point B. There he finds that the angle between AB and a line extending from B to the tree is 85.8°. What is the height h of the tree? (Round your answer to one decimal place.)
The height of the redwood tree can be determined through trigonometry, using the tangent of the angles given and the distances provided. The height of the tree from point B is found to be 1.8 feet, and the total height of the tree from point A is found to be approximately 30.9 feet.
Explanation:In this question, we can use trigonometry to solve the problem. From point B, we see two angles. The smaller angle, 85.8°, is the angle from the line extending to the tree and line AB, and the greater angle is 90°. Therefore, the angle between the line extending to the top of the tree and line AB is (90-85.8)= 4.2°.
Using the tangent function, which is the ratio of the opposite side to the adjacent side in a right triangle, we can solve for h. Tan 4.2° = h/24.8 feet. Solving for h gives us h = 24.8 feet * tan 4.2°. Using a calculator, we find that h is approximately 1.8 feet.
Similarly, let's calculate the height from point A. From point A, the angle of elevation to the top of the tree is 10.4°. The distance from the tree to point A is the sum of the length of AB (24.8 feet) and the length from B to the tree (h/tan 85.8°). So, the total height of the tree is h (from point B) + distance from A to the tree * tan 10.4°. This calculation gives us h = 1.8 feet + (24.8 feet + 1.8 feet/tan 85.8°)*tan 10.4°. After doing the calculations, we find that the height of the tree is approximately 30.9 feet when rounded to one decimal place.
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In country A, about three times as many cars are manufactured per day than in country B. If the total number of these cars manufactured per day is 26 comma 416, find the number manufactured in country B and the number manufactured in country A.
Answer:
country a = 19,812 cars
country b = 6,604 cars
Step-by-step explanation:
a = country a
b = country b
the 2 eqations are:
a + b = 26,416
a = 3b
now substitute 3b for a in the first equation:
3b + b = 26,416
add the variables:
4b = 26,416
now divide 26,416 by 4 (26,416/4)
b = 6,604
so country b has 6,604 cars
to find country b, substitute the number of cars in country b (which is 6,604) in the second equation:
a = 3b
a = 3 × 6,604
a = 19,812
so country a has 19,812 cars