Mathematics College

Richard answered 20 out of 25 questions on a test. what percentage of the test questions has Richard answered?

Answers

Answer 1

Answer:

80%

Step-by-step explanation:

To find what percent a part is of the whole, divide the part by the whole and multiply by 100%.

percent = 20/25 * 100% = 80%

Related Questions

please help asap !!! Which of the following points is a solution to the system of equations shown in the graph above?
A.(-2, 1)
B.(0, 0)
C.(0, 3)
D.(1, -2)

Answers

Answer:

a

Step-by-step explanation:

Type the correct answer in each box.
Consider the expressions shown below.
А.
B
C с
-872
-
3.5 + 4812
3r + 8 8r2 + 3r
4
Complete each of the following statements with the letter that represents the expression.
-
(3x2 7x + 14) + (5x2 + 41 6) is equivalent to expression
(2x2 – 5x – 3) + (-10x2 + 2x + 7) is equivalent to expression
(12t2 – 2x – 13) + (-4x2 + 5x + 9) is equivalent to expression

Answers

Answer/Step-by-step explanation:

✔️(3x² - 7x + 14) + (5x² + 4x - 6)

3x² - 7x + 14 + 5x² + 4x - 6 (distributive property)

Add like terms

3x² + 5x² - 7x + 4x + 14 - 6

8x² - 3x + 8

Therefore:

✅(3x² - 7x + 14) + (5x² + 4x - 6) is equivalent to expression 8x² - 3x + 8.

✔️(2x² - 5x - 3) + (-10x² + 2x + 7)

2x² - 5x - 3 - 10x² + 2x + 7 (distributive property)

Add like terms

2x² - 10x² - 5x + 2x - 3 + 7

-8x² - 3x + 4

Therefore:

✅(2x² - 5x - 3) + (-10x² + 2x + 7) is equivalent expression to -8x² - 3x + 4

✔️(12x² - 2x - 13) + (-4x² + 5x + 9)

12x² - 2x - 13 - 4x² + 5x + 9

12x² - 4x² - 2x + 5x - 13 + 9

8x² + 3x - 4

Therefore:

✅(12x² - 2x - 13) + (-4x² + 5x + 9) is equivalent expression to 8x² + 3x - 4

Answer:

B, A, C

Step-by-step explanation:

What is the value of p when the expression 2(4 + x) is equivalent to 2(x + p)?

Answers

Answer:

p = 4

Step-by-step explanation:

[tex]2(x+p)=2(4+x)\\x+p=4+x\\p=4[/tex]

P=4 I believe so most likely yes

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be

Answers

This question is incomplete, the complete question is;

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y"  = -1.5x + 85.

He also calculated that the value of r, the correlation, was -0.61.

what is the correct value of the coefficient of determination R² and give a correct interpretation of its meaning

Answer:

Interpretation of coefficient of determination R² = 0.3721

R² = 0.3721, meaning 37.21% of the total variation in test scores can be explained by the least square regression line

Step-by-step explanation:  

Given the data in the question;

the least square regression line is;

y"  = -1.5x + 85

the correlation coefficient r = -0.61

Now, the coefficient of determination R² is square of correlation coefficient r

R² = -61²

R² = 0.3721

Find all real solutions to (x^2+4)(x^3-4x^2-3x+12)=0

Answers

Answer:

x=4 or x=1.732051 or x=−1.732051

Celebrating exactly 8,000 people helped

A checking account contains 6,274.54.how much is left after withdrawing $385.79

Answers

Answer:

$5888.21

Step-by-step explanation:

when you see the words withdrawing remember that u always are subtracting so the equation will be 6274.54 - 385.79.

if f(x) =2((x)), find f(-1/4)​

Answers

Answer:

Combine

f and  1/4.

and u get - f/4

Step-by-step explanation:

Answer:

-1/2

Step-by-step explanation:

2(-1/4)

!!!!!!!!!!!!!!!!!!!!help me

Answers

Answer:

pretty sure its 75

The answer is 75 have a good day

Robert has 7 pounds of ground beef. He is dividing the beef into burgers that are each 1/3 of a pound. How many burgers can he make

Answers

Robert can make 21 burgers

Helllllllpppppp please help me

Answers

Answer:

i think maybe j that is what I think

7x2 + 4x - x2 whats the answer?!?

Answers

Answer:

14 + 2x I think

Step-by-step explanation:

Wait for more responses if needed

Answer:

[tex] {6x}^{2} + 4x[/tex]

Step-by-step explanation:

1) Collect like terms.

[tex](7 {x}^{2} - {x}^{2} ) + 4x[/tex]

2) Simplify.

[tex] {6x}^{2} + 4x[/tex]

Therefor, the answer is 6x² + 4x.

2/5 x 30 pls help me

Answers

Answer:

12

Step-by-step explanation:

Answer:

The answer is 12.

Find the length of the third side. If necessary, round to the nearest tenth

Answers

Answer:

x=14.28

Step-by-step explanation:

24^2+x^2=28^2, Pythagorean theorem

x^2=28^2-24^2

x^2=(28+24)(28-24)

x^2=52*4

x^2=204

x is around 14.28

Which expression is equivalent to 7u+4u?

Answers

Answer:

11u

Step-by-step explanation:

Add 7u and 4u

Hope this helps! :)

Someone help me please!

Answers

Answer:

ACD

Step-by-step explanation:

PLZZ mark brainliest!!

Answer:

D i think i havent done this in a while

Step-by-step explanation:

Extra Points and brainliest! Question below

Answers

Answer:

14 one fourths

Step-by-step explanation:

First, we convert 7/2 into a fraction with the denominator of a four. To do this, we multiply the top and bottom by 2. 7*2 is 14, and 2*2 is 4, which gives us 14/4. This means that there are 14 one fourths in 7/2. Hope this helps!

Answer:

14 fourths

Step-by-step explanation:

Hey There!

So to solve this problem we need to divide 7/2 by 1/4

[tex]\frac{7}{2}divided by\frac{1}{4} =14[/tex]

Therefore 14 fourths can go into 7/2

Please help solve this angle problem! It is due today!

Answers

Answer:

The answer is B.

Step-by-step explanation:

Two angles that add up to 90° are called complementary angles.

Angles A and B are complimentary angles. Complimentary angles are angles which add up to exactly 90 degrees.

They are often confused with supplementary angles, but supplementaries add up to 180.

Nathan needs to order some new supplies for the restaurant where he works. The restaurant needs at least 571 forks. There are currently 361 forks. If each set on sale contains 10 forks, use the drop-down menu below to write an inequality representing

Answers

Answer:

Nathan must order 21 sets of forks for the restaurant.

Step-by-step explanation:

Since Nathan needs to order some new supplies for the restaurant where he works, and the restaurant needs at least 571 forks since there are currently 361 forks, if each set on sale contains 10 forks, to determine the number of sets to buy you must perform the following calculation:

(571 - 361) / 10 = X

210/10 = X

21 = X

So Nathan must order 21 sets of forks for the restaurant.

help me pleaseee! thank you!!!

Answers

Answer:

you shouldn't be cheating kid

Hi. I need help with math. 8th grade.

Answers

Answer:

260 is the answer. jjrjejjehene

Find X for the solution

Answers

Step-by-step explanation:

good lucks

PLEASE ANSWER THIS QUESTION IS IN THE IMAGE!! DUE TODAY!
20 POINTS!

Answers

I cannot do the math on this but the answer equals to 4 and 1/14

Find sequence 10 5/22, 9, 7 17/22, ___, 5 7/22

Answers

Answer:

6⁶/11

Step-by-step explanation:

adding -27/22 to the previous number will give you the next number in the sequence

10 5/22 + -27/22 = 9

9 + -27/22 = 7 17/22

7 17/22 + -27/22 = 6 6/11

6 6/11 + -27/22 = 5 7/22

Help me pls i don't got a lot of time

Answers

Answer:

true

Step-by-step explanation:

I swear I know

i know it

Can y’all help me on question 16?!

Answers

Answer:

[tex]e^{2} - 21[/tex]

Step-by-step explanation:

Hey there!

Let's get you your answer!

We have to multiply e by e. Then we need to subtract 21 from it. That would look like this: [tex]e^{2} - 21[/tex]

Hope that helps!

HELP ASAP WHAT IS THIS ANSWER

Answers

Answer:

Step-by-step explanation:

x = 1/2 ( a + b)

x = 1/2 (129 + 71)

x = 1/2 (200)

x = 100 °

you just have to remember that formula

Patrick is reading a book about the history of baseball. The book is 210 pages long; 140 of the pages have illustrations on them. If Patrick opens the book to a random page, what is the probability that the page will have an illustration on it?

Answers

Answer:

Probability: 140/210= 14/21

3.(06.01 LC) Which point on the scatter plot is an outlier? (5 points) у 70 B 60 50 A 40 30 20 10 0 2 4 6 8 10 12 14 Point A Point B Point C Point D​

Answers

Answer:

point b

Step-by-step explanation:

A sample of radium has a weight of 1.5 mg and a half-life of approximately 6 years.
How much of the sample will remain after 1 year?

Answers

Answer:

Step-by-step explanation:

1.5×0.5^(⅙) ≅ 1.3 mg

(fractions) 3/4 + 1/5

Answers

Answer:

19/20

Step-by-step explanation:

write all numerators above the least common denominator 20

15+4/20

add the numbers

19/20

Answer: 19/20

Step-by-step explanation:

Find your common denominator

3/4

Multiply by 5

15/20

1/5

Multiply by 4

4/20 + 15/20= 19/20

Hope this helped :)

Other Questions
Fill in the blank. Consider the inverse square law: When light leaves a light bulb, it spreads out over more and more space as it goes. This makes the light thinner, with less and less light present the further from the light bulb we look. If we stand looking at a light bulb and see how bright it is, then move to be four times farther away from the light bulb, the light from the bulb will look ____________ less bright. Group of answer choices Consider the expression x + 6. What is the value of the expression when x = 4 7. The land west of the Mississippi River was thought to beA.ValuableB.ImportantC.WothlessD.Expensive A nonreligious set of laws established by a nation to provide order is known as __________. A. civil law B. emirate law C. Sharia law D. tribal law Please select the best answer from the choices provided A B C D When it gets cold outside, rocks slightly shrink. When the rocks are in extreme heat, they can expand and crack. What factor is responsible for the weathering being described? Group of answer choices Gravity Ice Plants Temperature According to the article, "How Can Your Smartphone Make Water Safe to Drink," less than 1% of phone's battery disinfects how much water? * Read the excerpt from Team Moon.The heavier the spacecraft, the harder it is to launch. And fuel is heavy. So it was critical to pinpoint the fuel needed, add a cushion, then take no more than necessary. But now, because the landing was taking far longer than planned, the fuel was almost gone. Mission Control wanted Neil to take as much time as he needed and fly the LM as near empty as possible only because they wanted him to make the landing. But if he ran out of fuel above the surface, in all likelihood the LM would crash onto the moon. So they were trying to time it to the last possible second before calling an abortcalling off the landing.Which detail from the excerpt best identifies a problem?And fuel is heavythe fuel was almost gonethey wanted him to make the landingthey were trying to time it to the last possible second ,what is the difference between Hispanic,Latino(a) and Spanish Which option describes an example of prejudice in connection to immigration to the United States?Many immigrants worked in factories, where working conditions were dangerous and unhealthy.Many immigrants lived together in U.S. cities and continued their traditions in places like Little Italy.In 1882, the United States issued the Chinese Exclusion Act, which stopped all immigration from China.From 1880 to 1900, more than 20 million immigrants came to the United States from eastern, southern, and central Europe. The triple point of water occurs at a pressure of 4.59 mmHg.What is the pressure in atm? 7Select all expressions that are equivalent to 6(7a + 9b).(1 Point)3(14a + 18b)2(11a + 13b)42a + 9b42a + 546 Please help me with this question Please help me - I will give brainlist ASAP!!! are 7n - 2 and 2 - 7n equal? PLEASE EXPLAIN A student burns 1.50 mol C3H8 according to the following reaction:C3H8 + 5O2 3CO2 + 4H2O.How many grams of carbon dioxide are produced?a. 1.98 10 gb. 1.32 10 gc. 4.40 10 gd. 6.61 10 g High energy waves have what if 5 more than n is 12, what is n? If a poet writes a traditional sonnet, which subject are they most likely to explore?A) loveB) warC) deathD) nature Train travels at 3 hours if it's speed is 65 miles per hour. It takes the train 2.5 hours if it's speed is 78 per hour . Identify the variation type We all know that recycling is good for the environment. In the United States, the first recycling mill was built in 1972. But did you know that musicians have been recycling for hundreds of years? Great classical music composers, such as Ludwig Van Beethoven and Antonin Dvorak, have been recycling the same notes year after year to create some of the greatest melodies ever! "Ode to Joy" (Beethoven) and "Going Home" (Dvorak) each use the five notes you have learned so far (G, A, B, C, and D).Based on what you've read, which of the following could you infer? Beethoven and Dvorak are great rock guitarists. Classical music is boring to everyone. Many classical melodies have something in common. Antonin Dvorak was the head manager of the first recycling mill in the United States.