Answer:
c. Either a minimum or a maximum
Step-by-step explanation:
considering that a parabola can grow or decrease from its vertex we can note that in the case of a parabola with the branches down the vertex will always be a maximum, and in the case of a parabola with the branches up it will always be a minimum.
Raymond has a set of 57 toy cars and decides to sell 19 of them to Joey. About how many toy cars does Raymond have left
Answer:
raymond has about 38 cars left
Step-by-step explanation:
Because raymond started off with 57 cars and he got rid of( take away) 19 you must use subtraction. 57 - 19 =38
Marcy has $20 she wants to buy a book that is marked down 30% from its original price of $28. If the sales tax is 2.5 does she have enough money
Answer:
no
Step-by-step explanation:
thirty percent of $28 is $8.4, so you would subtract the two leaving you with $19.6
2.5 sales tax of $19.6 is $0.49
Adding those two, the total comes to 20.09 which is just over budget
The amount of the book is more than $20. Then she does not have enough money.
What is the percentage?The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.
The percentage is given as,
Percentage (P) = [Final value - Initial value] / Initial value x 100
Let 'x' be the markdown price. Then the equation is given as,
30% = [(28 - x) / 28] × 100
0.30 = [(28 - x) / 28]
8.4 = 28 - x
x = $19.6
Then the amount of book after tax is given as,
⇒ $19.6 x 1.025
⇒ $20.09
The amount of the book is more than $20. Then she does not have enough money.
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carter needs to wrap 7 presents. he lays the ribbon out flat and says ,if i nake 6 equally spaced cuts i'll have just enough pieces i can use 1 piece for each packages and i won't have any pieces left over .does he have enough pieces to wrap all the presents
bob shot the basketball 32 times and made 23 baskets. What percent of his shots did get in?
The measures of two angles in a triangle are 48° and 71°. What is the measure of the third angle?
The sum of the 3 angles needs to be 180.
To find the third angle subtract to the known angles from 180.
180 - 48 - 71 = 61
The third angle is 61 degrees.
Question in the picture, please give the answer and how you got it
Area of the circle is 78.5 sq. units.
Step-by-step explanation:
Circumference of the circle = 31.4 units
2 π r = 31.4 units
2 × 3.14 ×r = 31. 4 units
r = 31.4 / (2×3.14)
= 5 units.
Area of the circle = π r² = 3.14 × 5 × 5 = 78.5 sq. units.
6. Rectangle GHIJ is enlarged to form
rectangle KLMN.
G 5cm H
2.5 cm
20 cm
10cml
Scale Factor:
Answer:
Scale Factor=2
Step-by-step explanation:
As the rectangle is enlarging from GHIJ to KLMN
then
Sacle Factor = Larger length / Smaller Length
Scale Factor = 5 cm / 2 cm = 2
Scale Factor = 20 cm / 10 cm = 2
claire%20deposited%20$2,500%20into%20an%20account%20that%20accrues%20interest%20monthly.%20she%20made%20no%20additional%20deposits%20or%20withdrawals.%20after%202%20years,%20claire%20had%20$2,762.35%20in%20the%20account.%20what%20is%20the%20annual%20interest%20rate%20of%20the%20account?%20compound%20interest%20formula:%20t%20=%20years%20since%20initial%20deposit%20n%20=%20number%20of%20times%20compounded%20per%20year%20r%20=%20annual%20interest%20rate%20(as%20a%20decimal)%20p%20=%20initial%20(principal)%20investment%20v(t)%20=%20value%20of%20investment%20after%20t%20years%205%%2011%%2026%%2031%
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Answer:
The annual interest rate is 5.247%.
Step-by-step explanation:
Question
Claire deposited $2,500 into an account that accrues interest monthly. She made no additional deposits or withdrawals. After 2 years, Claire had $2,762.35 in the account. what is the annual interest rate of the account?
Subtract $2,500.00 from $2,762.35 and you get 262.35- the 2-year interest. To get the annual interest, divide 262.35 by 2, which equals 131.75. Then, divide 131.75 by 2,500 (original amount) and you get 0.05247. Lastly, multiply 0.05247 by 100 to get the answer (5.247%).
To find the annual interest rate, use the compound interest formula and set it equal to the final amount in the account. After performing the necessary computations, 'r' comes out to approximately 5%.
Explanation:To find the annual interest rate of Claire's account, you'll need to use the compound interest formula: v(t) = p * (1 + r/n)^(nt), where:
'p' is the initial (principal) investment, in this case $2,500;'r' is the annual interest rate, which is what we're solving for;'n' is the number of times the interest is compounded per year, which, since it's compounded monthly, is 12; and't' is the number of years since the initial deposit, which is 2 in this case.Claire's account had $2,762.35 in it after 2 years. Therefore, you would set $2,762.35 equal to the formula and solve for 'r'.
Doing so yields $2,762.35 = $2,500 * (1 + r/12)^(12*2) which simplifies, after some mathematical computations, to an annual interest rate (r) of roughly 5%.
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What is the slope of the line with the equation 0 = -15x + 6y
Answer:
15/6
Step-by-step explanation:
if ax^2+bc+c=0 is given equation then slope of this equation will be
m=-a/b
solve y= 2/3x +7 and 3y= 2x -3
Answer:
The system has no solution
Step-by-step explanation:
we have
[tex]y=\frac{2}{3}x+7[/tex] ----> equation A
[tex]3y=2x-3[/tex]
Isolate the variable y
Divide by 3 both sides
[tex]y=\frac{2}{3}x-1[/tex] ------> equation B
Compare equation A and equation B
Both lines have the same slope and different y-intercept
so
Line A and Line B are parallel lines
The lines do not intersect
therefore
The system has no solution, because both lines are parallel
see the attached figure to better understand the problem
A triangle with no equal sides is called a scalene triangle, right? or no
Answer: Yes a scalene triangle is a triangle with 3 sides that all have different lengths.
Answer:
Correct
Step-by-step explanation:
Scalene means it has no equal side.
help please I'm stuck once again?
Answer:
The probe's final position is -143m
Step-by-step explanation:
Note that the words 'lowered' and 'below' mean subtract; while the word 'raised' means add. Thus, interpreting the statement to mathematical expression is done below.
[tex] - 90m + 50m - 138m + 35m[/tex]
[tex] = - 143m[/tex]
Therefore, the probe's final position is -143m. Hence, the sensor is 143m below the sea level.
It takes Esther 12 minutes to ride a roller
coaster four times. Write an equation to represent
the proportional relationship between the number
of rides and the total amount of time.
Final answer:
The proportional relationship between the number of rides and time is represented by the equation t = 3n where t is the total time in minutes and n is the number of rides.
Explanation:
Since it takes Esther 12 minutes to ride a roller coaster four times, we can find the time taken for one ride by dividing the total time by the number of rides.
Time for one ride = Total Time / Number of Rides = 12 minutes / 4 rides = 3 minutes per ride.
The proportional relationship between the number of rides (n) and the total amount of time (t) can be represented by the equation t = 3n. This indicates that for every ride, 3 minutes are added to the total time.
11/4 + 2 1/8 = solve this?
Answer:
4.875
Step-by-step explanation:
Madison went to the grocery store and purchased cans of soup and frozen dinners. Each can of soup has 500 mg of sodium and each frozen dinner has 700 mg of sodium. Madison purchased 2 more frozen dinners than cans of soup and they all collectively contain 7400 mg of sodium. Determine the number of cans of soup purchased and the number of frozen dinners purchased.
Madison purchased 5 cans of soup and 7 frozen dinners.
Step-by-step explanation:
Given,
Quantity of sodium in each soup can = 500 mg
Quantity of sodium in each frozen dinner = 700 mg
Total quantity = 7400
Let,
Number of soup cans purchased = x
Number of frozen dinners purchased = y
According to given statement;
500x+700y=7400 Eqn 1
y = x+2 Eqn 2
Putting value of y from Eqn 2 in Eqn 1
[tex]500x+700(x+2)=7400\\500x+700x+1400=7400\\1200x=7400-1400\\1200x=6000[/tex]
Dividing both sides by 1200
[tex]\frac{1200x}{1200}=\frac{6000}{1200}\\x=5[/tex]
Putting x=5 in Eqn 2
[tex]y=5+2\\y=7[/tex]
Madison purchased 5 cans of soup and 7 frozen dinners.
Keywords: linear equation, substitution method
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Answer:
Madison purchased 5 cans of soup and 7 frozen dinners
Step-by-step explanation:
If a^2 + b^2=c^2 then the triangle is a right triangle.
A triangle with side lengths of 15m, 30m and 34m is a right triangle.
True or False
***Important... Even though the question says 15m, the question owner says he meant to put 16m***
[tex]a^2+b^2=c^2\\\\16^2+30^2=34^2\\\\256+900=1156\\\\1156=1156[/tex]
True!
⭐ Answered by Hyperrspace (Ace) ⭐
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HELP! I put the formula but I don’t know the radius
Answer:
C. 8,624
Step-by-step explanation:
recall that the formula for circumference is
Circumference = 2πr ( = given as 85 meters)
hence,
85 = 2πr
r = 85/(2π)
given h = 15m
volume of cylinder
= πr²h
= π (85/2π)² 15 (using calculator and assuming π = 3.14)
= 8628.58
Comparing with the choices, the closest choice (within rounding error) is C. 8,624
m×n, when m=13 and n=12
Answer:
156
Step-by-step explanation:
13 × 12
13
×
12
=
26
130
=
156
Answer:
Step-by-step explanation:
m*n
m=13
n=12
13 * 12
156
2x + 3 for x = 3
evaluate each expression for the given value of x
Answer: 9
Step-by-step explanation:
2x + 3 when x = 3
2(3) + 3
2 * 3 = 6
6 + 3 = 9
To evaluate the mathematical expression 2x + 3 for x = 3, substitute x = 3 into the equation to get 2(3) + 3 = 6 + 3, and then add the numbers to get 9.
Explanation:
To evaluate the expression 2x + 3 for x = 3, you would replace x with 3 in the expression, then follow the order of operations (PEMDAS/BODMAS) to solve the expression.
Here is the step-by-step breakdown:
Substitute x = 3 into the expression, this makes the expression: 2(3) + 3 = 6 + 3 Then, you add the numbers together to get: 9
So, when x = 3, the value of the expression 2x + 3 is 9.
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The sum of two numbers is a hundred one number is at least 16 more than the other number. What are the numbers? Please help
Answer:
42 and 58
Step-by-step explanation:
Let the two numbers be represented by A And B
A + B = 100
A = B + 16
Substitute B + 16 in place of A in equation 1
We have,
B + 16 + B = 100
It can also be written as
B + B + 16 = 100
2B + 16 = 100
Subtract 16 from both sides
2B + 16 - 16 = 100 - 16
2B = 84
Divide both sides by 2
2B/2 = 84/2
B = 42
Now substitute 42 for B in any of the equations to get A.
Using equation 1
A + B = 100
A + 42 = 100
Subtract 42 from both sides
A + 42 - 42 = 100 - 42
A = 58
Therefore the two numbers are 42 and 58
Express 2.41 x 10^4 in a standard form
Step-by-step explanation:
[tex]2.41 \times {10}^{4} \\ = 2.41 \times 10000 \\ = 24100 \\ [/tex]
Find an equation for the line with the given properties.
Parallel to the line x = -5; containing the point (6, 2)
The sales tax rate is 8.25%. If Sheila bought a sweater for $35, a pair of jeans for $89, and a handbag for $55, find her total cost including the sates tax. Round your answer to the nearest cent.
Answer:185,422.61
Step-by-step explanation:8.25%/100=0.0825 but since it a sale tax you add a 1 so it would be 1.0825•35=37.88•89= 337.32•55=185,422.61
Please help with probability
Step-by-step explanation:
2. The total number of calculators is 6 + 9 + 2 = 17.
When she hands out the first calculator, the probability that it is blue is 2/17.
When she hands out the second calculator, there is one less calculator total, so the probability that it is yellow is 9/16.
The probability of both is therefore:
P = 2/17 × 9/16
P = 9/136
3. There are 13 clubs in a standard deck of 52 cards.
The probability that the first card is clubs is 13/52 = 1/4.
Since you replace the card, there are still 52 cards in the deck. So the probability that the second card is clubs is 13/52 = 1/4.
The probability that both cards are clubs is:
P = 1/4 × 1/4
P = 1/16
4. The total number of pieces of gum is 6 + 9 + 5 = 20.
When you pick the first piece, the probability that it is grape is 6/20.
When you pick the second piece, there's one less piece of gum, and one less grape flavor, so the probability is 5/19.
The probability that both pieces are grape is:
P = 6/20 × 5/19
P = 3/38
5. The total number of drinks is 6 + 3 + 4 = 13.
Since the coach replaces the first drink, the second selection will be independent of the first. So the probability is still P = 6/13.
6. A die has six sides. They are numbered 1 through 6. Three of the numbers are even. Each roll is independent, so the probability of a previous roll does not affect the probability of future rolls.
The probability that you get 3 even numbers, followed by a one, is:
P = (3/6) (3/6) (3/6) (1/6)
P = 1/48
45 percent of a group of people have blue eyes. How many people are in the group if 180 people have blue eyes
Answer:
81
Step-by-step explanation:
solve 1/8 + 6a/5 = 3/8 + 2a/5 + 7/8
Answer:
no6666//7
Step-by-step explanation:
88../6
A bank is offering you an introductory credit card promotion. Your interest for the first year is 8%. But, at the beginning
of the 2nd year your interest rate will go up to 23%. If you have an $1,800 balance on your card throughout both years, what will be the
difference in the monthly interest owed during year 1 and year 2?
O a) $10.80
Ob) $15.66
O c) $22.50
O d) $34.50
Answer:
c) $22.50
Explanation:
1. Calculate the monthly interest owed during year 1
Interest for first year: 8%The monthly rate is the yearly rate divided by 12: 8% / 12 = 0.08/12The monthly interest owed is the monthly rate times the balance: (0.08/12)×$1,800 = $12.002. Calculate the monthly interest owed during year 2
Interest for second year: 23%The montly rate is the yearly rate divided by 12: 23% / 12 = 0.23/12The monthly interest owed is the monthly rate times the balance: (0.23/12)×$1,800 = $34.50
3. Calculate the difference
Difference in the monthly interest owed during year 1 and year 2 = $34.50 - $12.00 = $22.50Hence, the answer is the option c) $22.50
A circular mirror is surrounded by a square metal frame. The radius of the mirror is 3x. The side length of the metal frame is 15x. What is the area of the metal frame?
The area of the metal frame surrounding a circular mirror can be calculated by figuring the expression 225x² - 9πx², which represents the area of the square minus the area of the circle.
Explanation:The subject of this question is based in mathematics, specifically the area of geometry. The area of the metal frame surrounding the mirror can be found by calculating the difference between the area of the square frame and the area of the circular mirror.
The area of the square frame is given by the formula A = s² where 's' is the length of a side of the square. In this case, each side of the square is 15x so the area of the square frame would be (15x)² = 225x².
The area of the circular mirror is given by the formula A = πr² where 'r' is the radius of the circle. For this mirror, the radius is 3x, so the area of the mirror would be π*(3x)² = 9πx².
So, the area of the metal frame is the difference between the area of the square and the area of the circle. Thus, the area of the frame = 225x² - 9πx².
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Final answer:
To find the area of the metal frame, calculate the area of the square then subtract the area of the circle. The area of the frame is the difference between the square's area, (15x)², and the circle's area, π(3x)².
Explanation:
The question asks for the area of the metal frame surrounding a circular mirror with the mirror's radius being 3x and the frame's side length being 15x.
To find the area of the frame, first calculate the area of the square and then subtract the area of the circle (mirror). The area of the square is given by the formula A = side², so:
Area of the square (Frame + Mirror): A = (15x)²Next, calculate the area of the circle using the formula A = πr²:
Area of the circle (Mirror): A = π(3x)²Finally, subtract the mirror's area from the frame's area to find the area of the metal frame alone:
Area of the metal frame: Aframe = (15x)² - π(3x)²3.14*16.8*16.8*16.9
Find answer then round to the nearest hundredths
[Mark Brainliest if correct]
Answer: 3.14 *16.8*16.8*16.9=14977.3478
14977.3478= 14,977.35
what is the value of c so that -12 and 12 are both solutions of x^2-c=108?
Answer:
c=36
Step-by-step explanation:
Because [tex]x^2-c=108[/tex] can be rewritten as [tex]x^2-c-108=0[/tex], finding the value of c so that x=(+-)12 solves this equation it means to find the value of c so that [tex](+-)12^2-c-108=0[/tex].Because [tex]12^2=(-12)^2=144[/tex], we must find c so that [tex]144-c-108=0[/tex].Because [tex]144-108=36[/tex], c=36.To check, replace c=36 in the initial equation, and check it is a solution for x=(+-)12.