A student answers 75% of the questions on a math exam correctly.If he answers 15 questions correctly,how many questions are on the exam

Answers

Answer 1

Answer:

20

Step-by-step explanation:


Related Questions

Phyllis invested $13,000, a portion earning a simple interest rate of 5¼% per year and the rest earning a rate of 5% per year. After one year the total interest earned on these investments was $672.50. How much money did she invest at each rate?

Answers

Answer:

Phyllis invested $9000 at the rate of 5.25% and $4000 at the rate of 5%.

Step-by-step explanation:

Formula for the simple interest is,

Interest = [tex]\frac{P\times r\times t}{100}[/tex]

Here, P = Principal amount

r = rate of interest  

t = Duration of investment

Let Phyllis invested amount (at 5.25% rate of interest) = $x

Therefore, Interest on this amount,

Interest = [tex]\frac{5.25\times x}{100}[/tex]

             = $0.0525x

If he invested the rest amount $(13000 - x) at the rate of 5%,

Interest earned on this amount = [tex]\frac{(13000-x)\times 5\times 1}{100}[/tex]

                                                    = $(650 - 0.05x)

Interest earned on total amount = $672

Therefore, $0.0525x + $(650 - 0.05x) = $672.5

0.0025x + 650 = 672.5

0.0025x = 22.5

x = $9000

Rest amount = 13000 - 9000

                     = $4000

Phyllis invested $9000 at the rate of 5.25% and $4000 at the rate of 5%.

Find the area of parallelogram ABCD given me A = 300 and the following measures.
AB = 10 in., AD= 6 in
A-
30 in
3013 in 60 in

Answers

60 inches is the area of the parallelogram

Answer:

30 in²

or

60 inches

Hope this helps ^-^

Which equation and solution can be used to solve this problem? Twenty-two less than a number is twenty-four. O Q+ 22 = 24. Subtract 22 from both sides. The answer is 2. 0 24+9= 22 Subtract 22 from both sides. The answer is 2 O9-24 = 22. Add 24 to both sides. The answer is 46. 09-22 = 24. Add 22 to both sides. The answer is 46.​

Answers

Answer:

Step-by-step explanation:

q minus 22 = 24: Add 22 to both sides. The answer is 46.

The scale of a room in a blueprint is 5 in.: 9 ft. A wall in the same blueprint is 30 in. Complete the table.
Blueprint length (in.) 5
10
15
20
25
30
Actual length (ft)
9
How long is the actual wall?
The actual wall is
feet long
A window in the room has an actual width of 4.5 feet. Find the width of the window in the blueprint.
The width of the window in the blueprint is
in.

Answers

Answer:

54 feets

2.5 inches

Step-by-step explanation:

Given that:

Scale model:

5 in : 9ft

If 5 in = 9 ft

Hence, 1 in on the blue print equals

5 in = 9 ft

1 in = x

Cross multiply

5x = 9

x = 9/5 feets

Hence, 1 inches on the blueprint equals 9/5 feets actual

Blueprint length (in.) ___ Actual length (ft)

5 _________ 9

10 ________ 18

15 ________ 27

20 _______ 36

25 _______ 45

30 _______ 54

Hence ;

5 * 9/5 = 9 feets

10 * 9/5 = 18 feets

15 * 9/5 = 27 feets

20 * 9/5 = 36 feets

25 * 9/5 = 45 feets

30 * 9/5 = 54 feets

Window with actual width of 4.5 feets

Width of window in blue print :

Actual width ÷ 9/5

Actual width = 4.5 = 4 1/2 = 9/2

9/2 * 5 /9

= 5 /2

= 2 1/2 inches = 2.5 inches

Find the amount Enca owes at the end of 3 years if $6500 is loaned to her at a rate of 4% compounded monthly

Answers

Answer:

7311.616

Step-by-step explanation:

6500 x 1.04^3

What is the area of the rectangle below?
a. 16 units
b. 32 units?
c. 39 units
d. 52 units?
3 units
13 units

Answers

Answer:

39 units

Step-by-step explanation:

when its a rectangle just multiply the two side lengths together to get the answer

WOWOWOWOWLWLWLWKWKWKWKWLWL

Answers

Answer:

chicken nugget

Step-by-step explanation:

Write as a repeated addition. Use fraction
strips or a number line to calculate each
answer.

a) 2 x 1/3

b) 2 x 5/4

c) 4 x 5/2

d) 5 x 1/6

e) 6 x 3/5

f) 7 x 7/6

Please answer it it as quickly as possible....

Answers

Answer:

A) 2/3

B) 5/2

C)5/2

D) 5/6

E) 9/5

F) 49/6 (LOWEST TERM IT URSELF PLS)

can someone please help?​

Answers

Answer:

g

Step-by-step explanation:

G 12 mi I think ? Isushdgbxuuwj

jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. When the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax. After tax, the total is 45.99. What percentage of the subtotal is the total?

Answers

Answer:

To find out the percentage, you do (3.99/42) * 100.

Step-by-step explanation:

what is the solution to the system y= 2x-3 y= -x+3

Answers

You would have to step up your problem like this 2x-3=-x+3, then you add -x to both sides. So, the problem will look like this 3x-3=3 then add to both sides. The ending problem will look like this 3x=6 then divide 3 to both sides then your answer is 2! Hopefully this is correct!

Please help i really need help on a b and c

Answers

The equation is y=5x+25
It will take 72 cars for the class fund to be $385. Work shown is in the picture attached.

-2(-6x+2u-3)
-3x-6(-6y+6x)-2y
-3(w+6)+5w

PLEAZE SIMPLIFY THEESE FOR ME ASAP please i need this really bad :(
pleze help i will like it so you can get more pints plzzzzzzzz :(

Answers

Answer:

12x-4u+6-3x+36y-36x-2y-3w-18+5w= -27x-4u-12+34y+2w

I can't belive i am answering this instead of doing my homework

Step-by-step explanation:

Write the equation of the line given a slope of 0 through the point (5, -7)

Answers

Answer:

y=-7

Step-by-step explanation:

y-y1=m(x-x1)

y-(-7)=0(x-5)

y+7=0

y=0-7=-7

1. Write the next three terms of the arithmetic sequence
1, 8, 15, 22, ...

Answers

Answer:

29,36,43

Step-by-step explanation:

Answer:

29

Step-by-step explanation:

the numbers are being added by 7

1 + 7 = 8

8 + 7 = 15

and so on

need help asap plsss

Answers

Answer:

x = 29°

y = 29°

z = 102°

Step-by-step explanation:

x and y both look even to the 29° angle across from them and z looks even to the 102° angle across from it.

which equation represents the line that has a slope of 4 and passes through the point (2, 7)?
(A) y = 4x - 1
(B) y = 4x + 15
y=x+4
D y =
= 2x-4

Answers

Answer:

A) y = 4x - 1

Step-by-step explanation:

y = mx + b

y = 4x + b

7 = 4(2) + b

7 = 8 + b

-1 = b

y = 4x - 1

Eric needs to cut a board into 6 equal pieces. The board is 4 feet long.
How long will each piece be?

Answers

Answer: 24 feet long or 10 feet long.

Step-by-step explanation: I Hope this helps Have a Blessed day.

Select all possible solutions
help!

Answers

Please just tell us the questions so we don’t have to look at bad quality

Nevaeh has read 168 pages of a 210- page book. What percent of the book has Nevaeh not read?

Answers

Answer:

168 ÷ 210 X 100

80 % is your answer

Step-by-step explanation:

folloe me plzzz

20 POINTS PLZ HELP

4. You are taking out an adjustable rate mortgage with an initial APR of 4% for
years 1 - 5, loan amount: $224,000 for 30 years. What is the monthly payment and
total cost for the first 5 years? Which line(s) did you use on the calculator and
what did you enter for B, R, T and m.

Answers

Answer:

mmm... i think its 6-

Step-by-step explanation:

A car dealership pays $8,350 for a car. They markup the price by 17.4% to get the retail price. What is the retail price of the car at this dealership?

Answers

Answer:

I belive its $9,802.9

Step-by-step explanation:

$8,350 x 0.174 ( 17.4 ÷ 100)

= $1,452.9

$8,350 + $1,452.9 = $9,802.9

please help i have 1 hour to compleate

Answers

Answer:

2nd one is right

I am confused boii

Step-by-step explanation:

LIVE AND LET LIVE music on the outline map of india mark

It’s the 2nd one. Jesus Jenny is tall she’s like slenderman or somethin

3
4 -
8
5
1 -
8 797968686

Answers

whats the question so that we can help????

I need help, I need to find the value of j, thank you

Answers

Step-by-step explanation:

[tex] \sin(x) = \frac{8}{10} \\ x = 53.13[/tex]

[tex] \sin(53.13) = \frac{4}{j} \\ j = \frac{4}{ \sin(53.13) } = \frac{4}{0.8} = 5[/tex]

Write the equation of the line in slope-intercept form: y=mx+b
Given: Point (1,3) Slope: 2

Answers

Answer:

y=2x+1

Step-by-step explanation:

y-y1=m(x-x1)

y-3=2(x-1)

y-3=2x-2

y=2x-2+3

y=2x+1

I urgently need help!!!!!!

Answers

Answer:

You are given a right triangle. The sum of the two acute angles should add up to 90 degrees. Set up an equation using the expressions given and solve for x. Once you know the value of x plug it back into each expression to find the measure for each angle.

Step-by-step explanation:

Angle 1 + angle 2 = 90

solve for x = ____

Plug the value into each expression to find the measure of each angle.

Answer:

D

Step-by-step explanation:

(2x+6)+(5x+14)=90

7x+20=90

7x=70

x=10

(2x+6)=26°

(5x+14)=64°

What is the equation of the line that passes through (5,-3) and (3,7)

Answers

Answer:

-5x +22

Step-by-step explanation:

104.65/ 35
pls help and can u show me a example

Answers

Answer:

2.99 or 3

Step-by-step explanation:

Solve: x - 9.5 = -10.5

Answers

X= -10.5+9.5
X=1
I hope that helped:)

Answer:

x = -1

Step-by-step explanation:

x - 9.5 = -10.5

x = -10.5 + 9.5

x = -1

Other Questions
Plz do this assignment witch is in the attachment to recieve 20 points Why is water called the universal solvent?A.) Water is a nonpolar substance that dissolves polar substances B.) Water can act as a solvent in many different solutionsC.) Water is a polar substance that dissolves nonpolar substancesD.) Water can act as a solute in many different solutions Which expression is equivalent to z2 + z + 4z3 + 4z2 ?Group of answer choicesA.No answer text provided.B.5zC.4z3 + 5z2 + zD.4z3 + 5z2 E.9z2 + z lots of pointssssss :) do each part pls (u will be reported if u do not thank)(4,803) 95 What came first? God or the World? "Sophia and Rebecca's conversations only." I have a triangle: Angle A = 3x +28; Angle B = 5x +52; Angle C = 2x - 10: Solve for X There is a line whose slope is 7 and whose y-intercept is -5. why is it's equation in slope-intercept form? A student walks at a rate of 1.5 meters per second for 4 seconds and then stops for 4 seconds. Then the studentcontinues walking at the original rate.Which graph best represents the student's walk? The gadsden purchase doubled the size of the USA. TrueB. False Based on context clues, which meaning of the word tackle is most likely used in the sentence?Terrence was moved to tackle because he was one of the biggest guys on the team.A. (Noun) 3. Equipment used for fishing.B. (Verb) 2. To force a persons body to the ground by seizing with force.C. (Verb) 1. To address a problem.D. (Noun) 4. A position in the game of football. A tennis ball covers a distance of 12 meters in 0.4 seconds what is the velocity of the tennis ball? What years did the Mixtec civilization exist Use the quadratic formula to solve 2x2 + 2x - 12? Fractions less then 1/2 The Moon has a smaller mass than the Earth. If you were to travel to the moon your weight would.... A Increase B Decrease C Stay the SameD Vary with day and night what argument does K Britten make in the passage? True of flase a point (0,2) can be reflected across the x-axis PLEASE HELP 50 POINTS A person moving along which latitude line would most likely travel through Louisiana?A: 28 NB: 31 NC: 34 ND: 42 NSource: what was russias involvement in world war I