a student answers 90% of the questions on math axam correctly. if he answers 27 questions correctly How many questions are on the exam

Answers

Answer 1
30 is the correct answer because 27/30 = .9
Answer 2

The total number of questions in the exam will be 30 questions.

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

A student answers 90% of the questions on the math exam correctly. If he answers 27 questions correctly.

Let the total question in the exam be 'x'. Then the total number of questions in the exam is calculated as,

90% of x = 27

0.90 x = 27

x = 27 / 0.90

x = 30

The total number of questions in the exam will be 30 questions.

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Related Questions

Find an equivalent mixed number for the decimal number 2.64

A. 2 32/100

B. 2 64/50

C. 2 37/50

D. 2 16/25

Answers

The answer is D. 2 16/25.

Answer:

d) 2 16/25

Step-by-step explanation:

Now we have to,

→ convert into mixed fraction.

Let's solve the problem,

→ 2.64

→ (264/100)

→ 2 64/100

→ 2 16/25

Hence, option (d) is correct.

What is the factored of the expressions 3×2+8×-16

Answers

If you follow PEMDAS, multiplication would be first, so 3*2 is 6, then it's addition.
So 3*2=6 and 8*-16 is -128, then you add them both.
So 6+(-128) is equals to -122. YOU'RE WELCOME :D

To graph the equation 2x + 5y = 10, Zeplyn draws a line through the points (5, 0) and (0, 2). What is the slope of the line represented by 2x + 5y = 10?

Answers

It's B

just took test

The equation of the line passing through points (5, 0) and (0, 2) is y = -2/5x + 2 and slope is -2/5.

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

The given equation is 2x + 5y = 10.

We have to change this equation to slope intercept form

Isolate the term y from the equation

Subtract 2x from both sides

5y = -2x + 10

Divide both sides by 5

y = -2/5x + 2

the slope will be -2/5

Hence, the equation of the line passing through points (5, 0) and (0, 2) is y = -2/5x + 2 and slope is -2/5.

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In a particular card game, the minimum score a player can achieve in a single game is 20, and the maximum score possible in a single game is 52. If a player plays three games and scores a total of 141 points, what is the least number of points that the player could have scored in one of the games?

Answers

So if we want to know the least amount, we first want to assume the other two games both had a score of 52, so we can say the last one had the least possible.

So if both got 52, the total points would be 104, for two games of 52 points. Since we want 141 points, we therefore want 37 more points to reach 141.

So the least amount of points a player could've scored in one of the games was 37.

If a ball rotates through 110 degrees in 8 seconds, how many rotations does it make in 32 seconds

Answers

Hello there!

If:

110....> 8 seconds
x........32 seconds

Cross multiply

8 * x = 32 * 110

8x = 3520

x = 3520/8

x= 440

It makes 440 rotations in 32 seconds


I hope this helps!
It makes 440 rotations in 32 seconds

Which word completely describes the rhombus?
A.equilateral
B.equiangular
C.regular

Answers

I say A. because all the sides are the same.
it is a equilateral because it has four congruent sides.

Three different hoses, each with its own pump, can be used to fill a swimming pool. If hose A is used by itself, the pool takes 6 h to fill. Is hose B is used by itself, the pool takes 3 h to fill. If hose C is used by itself, the pool takes 2 h to fill. If all three hoses are used at the same time, how long does the pool take to fill?

Answers

Minus 6 and 3, then minus it again with a 2. About 1 hour it will take to fill the pool. Hope this is the correct answer.
It will take the pool 1 hour to fill up.

Haley is considering two gym membership plans. The plans are detailed here. Plan one $50 for a monthly pass and a $3 fee for each gym visit plan to $10 for each gym visit what is a system of equations that represents the cost of the plans?

Answers

Well for the first one it'd be y=3x+50 and for the second one it'd be y=10x

The two situations can be represented as C(x) = 3x + 50 and  C(x) = 10x.

What is the graphical solution of a system of equations?

Graphical solutions of a system of equations are way of finding the intersection points of all the equations given.

A system with two or more than two equations has a solution only when they have a common intersection point.

Let the no. of gym visits be 'x' and the total cost be C(x).

Given, Plan one $50 for a monthly pass and a $3 fee for each gym visit.

∴  C(x) = 3x + 50.

Plan two $10 for each gym visit.

∴ C(x) = 10x.

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A sweater is marked down $25 to $19 what is the percent of change

Answers

19/25 = x/100
Cross multiply:
1,900
Divide 1,900 by 25
Equals 76
Subtract 76 from 100
Answer: 24% change

I hope this helps!

To solve the problem we must know about Percentage.

Percentage

A percentage is a way to describe a part of a whole. such as the fraction [tex]\bold{\dfrac{1}{4}}[/tex] can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given to us

A sweater is marked down $25 to $19

Assumption

Let the x% be the remaining amount.

Remaining Amount

x% of $25 = $19

[tex]\dfrac{x}{100} \times \$25 = \$19\\\\\dfrac{x}{100} \times 25 = 19\\\\\dfrac{x}{4} = 19\\\\x = 19\times 4\\x = 76[/tex]

Thus, $19 is 76% of $25.

Percent of change

the percent of change =  Orignal percentage - final percentage

                                      =  100% - 76%

                                      =  24%

Hence, the percentage change is 24%.

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There are 64 teams in a basketball tournament each team has 14 players. How many basketball players in all are in the tournament

Answers

896 players are in the tournament

When comparing answers on a group assignment, Jenny and Jeremy found that their answers did not match.

Part 1: Who do you believe has the correct solution for the group assignment—Jenny or Jeremy? In two or more complete sentences, explain, in mathematical terms, the reasoning behind your conjecture.

Part 2: Use long division to convert the fraction provided in each of the student's answers to a decimal number. Include all of your calculations in your final answer.

Part 3: Using complete sentences, compare your conjecture in Part 1 with your results in Part 2. Was your conjecture correct or incorrect?




Answers

Jenny has the correct solution for the group assignment. It is evident in her response because she uses the correct percentage of 41/100. Unlike Jeremy who uses 41/99. When using fractions or decimals the numerical range always extends to 100.

The decimal number would be 0.41.

What is the slope of the line?

y = 5 + 4x

Question 5 options:

a) 5
b) 9
c) 1
d) 4

Answers

The answer is to your question is B)4. Its y=mx+b and m is your slope and 4 is thw m. 


(c) Mrs. Dewalt looked at another hotel. She waited a week before she decided to book nights at that hotel, and now the prices have increased. The original price was $1195. The price for the same room and same number of nights is now $2075. What is the percent increase? Round to the nearest whole percent. Explain and Show your work.

Answers

73.6402% Increase (74%)
Hope This Helps!
73.64 percent change( so it would be 74% change)
Hope it helped!

Show me one way to count from $82 to $512

Answers

Count by tens. It will help go by tens it always the answer
Maybe use a scenario to show how you spent $82 of the $512 you originally had. For example, during your trip to the mall, you spent $2 dollars for a panda keychain. Then, you spent $10 for a Spiderman comic book. On your way home, there was a sale on the shoes you have always wanted, so you bought a pair of shoes for $70. 

This scenario is useful because it can help you count 82 from 512 by breaking up the number. Doing so prevents you from over thinking the problem, etc.

Find the orthocenter of ABC

Answers

Answer:

(7,3)

Step-by-step explanation:

Product a is an 8 oz bottle of cough medication that sells for a $1.36 product B is a 16oz bottle of cough medication that costs $3.20 which product has the lower unit price

Answers

1.36 ÷ 8 = 0.17

3.20 ÷ 16 = 0.2

Product B has a lower unit price (dollar per ounce)

What are the length and width of a rectangle if the length exceeds the width by 75 inches and the perimeter is 158 inches

Answers

width of 76 inches and length of 3

or width of 77 and length of 2

or width of 78 and length of 1

they all have a perminiter of 158 and all widths exceed 75

Modeling with systems of linear inequalities

Answers

Final answer:

Modeling with systems of linear inequalities involves using multiple linear inequalities to represent constraints and solve problems with multiple variables. We can graph the inequalities on a coordinate plane and find the feasible region, which represents all the solutions that satisfy the constraints.

Explanation:Modeling with systems of linear inequalities

Modeling with systems of linear inequalities is a mathematical concept that involves using multiple linear inequalities to represent constraints in a real-world situation. This allows us to model and solve problems involving multiple variables and constraints, such as optimizing profit or finding feasible solutions.

Here's an example:

Let's say we have two variables, x and y, representing the number of units of two products.We also have two inequalities, 2x + 3y <= 10 and x + y >= 4.These inequalities represent constraints on the production and sales of the products.To model this situation, we graph the two inequalities on a coordinate plane.The feasible region, the area where the shaded regions of both inequalities overlap, represents the set of solutions that satisfy all the constraints.We can then use this model to analyze and solve various problems, such as finding the maximum profit by maximizing a certain objective function within the feasible region.

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which expression is the same as 2(n+7)

Answers

A) 2n + 2(7)

distribute the 2 to both n and 7

They are being multiplied after distribution, so A is your best answer

hope this helps

3. The three salespeople for a local advertising firm are Lola, Ahmed, and Tommy. Lola sold $2030 in ads, Ahmed sold $1540, and Tommy sold $1800.
(a) What fraction of the total sales did each salesperson sell?
(b) A $100 bonus was awarded to the three salespeople, which they had to share. It was awarded so that each salesperson received the same fraction of $100 as he or she sold of the total sales. How much did each person receive? Round to the nearest
answer a and b

Answers

3. (a)

Add the three totals.

Total sales for all three: $2030 + $1540 + $1800 = $5370

Now divide each person's sales by the total sales to find each person's fraction of the sales.

Lola: 2030/5370
Ahmed: 1540/5370
Tommy: 1800/5370

3. (b)

Multiply each fraction from part (a) by $100.

Lola: 2030/5370 * $100 = $37.80
Ahmed: 1540/5370 = $28.67
Tommy: 1800/5370 = $33.52



What is the slope-intercept form of the linear equation 2x–8y=32 ?

What is the equation of this graphed line?

Enter your answer in slope-intercept form in the box. (Graph is on picture)

Which equation shows y=3/4x-5/2 in standard form?

A. 3x−4y=10

B. 3x−4y=−10

C. 4x−3y=10

D. 4x−3y=−10

Answers

the answer to this question is B

1. The slope-intercept form of the linear equation [tex]\(2x - 8y = 32\)[/tex] is [tex]\(y = \frac{1}{4}x - 4\).[/tex]

2. The equation of the graphed line is [tex]\(y = -\frac{9}{8}x + 7\).[/tex]

3. The standard form of [tex]\(y = \frac{3}{4}x - \frac{5}{2}\)[/tex] is option A: [tex]\(3x - 4y = 10\).[/tex]

Let's break down the given information step by step:

1. Slope-Intercept Form of the Linear Equation:

  - The given equation is 2x - 8y = 32.

  - To express it in slope-intercept form (y = mx + b), we need to solve for y:

    2x - 8y = 32

    -8y = -2x + 32

    [tex]y = \frac{1}{4}x - 4[/tex]

  Therefore, the slope-intercept form of the given equation is [tex]\(y = \frac{1}{4}x - 4\)[/tex].

2. Equation of the Graphed Line:

  - The graphed line has the equation [tex]\(y = -\frac{9}{8}x + 7\)[/tex].

3. Standard Form of [tex]\(y = \frac{3}{4}x - \frac{5}{2}\)[/tex]:

  - We want to express [tex]\(y = \frac{3}{4}x - \frac{5}{2}\)[/tex] in standard form (Ax + By = C).

  - Multiply both sides of the equation by 4 to get rid of fractions:

    4y = 3x - 10

    3x - 4y = 10

  Therefore, the standard form of [tex]\(y = \frac{3}{4}x - \frac{5}{2}\) is \(3x - 4y = 10\)[/tex].

Given this information, the correct answer is A. 3x − 4y = 10.

which two square roots are used to estimate 47

Answers

It's either 7 and 7 or 7 and 6.86
Final answer:

The two square roots used to estimate the number 47 are 6 and 7, because their squares, 36 and 49 respectively, are the nearest perfect squares to 47.

Explanation:

The problem is asking for the two square roots used to estimate the number 47. To solve this, think of two perfect squares that are the closest to 47. Those would be the squares of 6 and 7, because 62 equals 36 and 72 equals 49, which are the closest perfect squares to 47. So, we would use 6 and 7 to estimate the square root of 47.

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URGENT WILL MARK BRAINLIEST!

Starting at sea level, a submarine descended at a constant rate to a depth of −4/5 mile relative to sea level in 3 minutes.

What was the submarine's depth relative to sea level after the first minute?

Simplest form please!

Answers

Hello!

I believe the correct answer is -4/15.

Hope this helps! ☺♥
-4/5*(miles), 3

i hoped this helps

Mate weighed each of his cats. He found that Betty weighed 1 1/4 kilograms, Fido weighed 2 kilograms, Spot weighed 1 5/8 kilograms, Yogi weighted 3 4/9 kilograms, and Smart weighed 4 1/10 kilograms

What was the weight of Nate’s heaviest cat?

Answers

The weight of Nate's heaviest cat would be 4 1/10 since Smart is the heaviest cat based off on the whole number from the mixed fraction, 4 was the biggest one.
Answer:

The weight of Nate’s heaviest cat is:

          4 1/10 kilograms=4.1 kilograms ( Smart)          

Step-by-step explanation:Weight of Betty is:

  1 1/4 kilograms which in decimals is: 1.25 kilograms.

Also,

Weight of Fido is:

           2 kilograms

Weight of Spot is:

  1 5/8 kilograms which in decimals is: 1.625 kilograms

Weight of Yogi is:

    3 4/9 kilograms which in decimals is: 3.444 kilograms

Weight of Smart is:

 4 1/10 kilograms which in decimals is: 4.1 kilograms

Hence, we observe that Smart weight is highest amongst the weight of the other cats.

81 is 54% of what number

Answers

54/100 times X/1 = 81 ( Always put the percent over 100 and use X to rep. the unknown. 

54X / 100 = 81/1 

crossmultiply 

54x = 8100 

x= 150

Hope this helped! :)
81 is 54% of 150

Hope it helps :)

Please figure this out and show your work

Answers


(7-b)+(3b+2)

Steps:

Simplify
7-b+3b+2
= 7+-b+3b+2

Combine like terms 
=7+-b+3b+2
= (-b+3b)+(7+2) 
= (-b+3b) + (7+2) 


 2b+9 


Hope I did it right ^.^ 

a football team lost 4yards on each of 2 plays,gained 14 yards on the thrid play and lost 5 yards on the fourth play.

Answers

I think the answer is -4(2)+14-5.

Solve for x, show all your work:
x3 = 10

Answers

3.3333333333333333333
repeating
You would divide 10 by 3 I think I haven’t done this for a long time

ana hikes at a constant speed.She travels 6 miles in 2 hours. Find her speed in miles per hour.Use it to write an equation for the distance ,d, that ana travels in h hours.

Answers

If Ana drove 6 miles in 2 hours, then she drove at a constant speed of 3 miles per hour. 
d/t=s

Answer:

6mi=2hours

3mi=1hour

so she can go 3mph

Set up the equation



The product of a number(variable) and 4 increased by 16 is -2

Answers

4x + 16= -2 

now I will solve it just for fun..

4x= -18

x= -4.5 
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