MATHEMATICS HIGH SCHOOL

I NEED HELP QUICKLYDoug got 8 out of 10 questions correct on a math quiz. If each question was worth the same number of points, and the test was worth 50 points total, what was Doug's score?

45 points
8 points
40 points
20 points

Answers

Answer 1
Answer: His score was 40 each question was worth 5 points
Answer 2
Answer:

The answer is 40

50 divided by 10 is 5

Meaning, each question is worth 5 points

8x5 is 40

Therefore, Doug's score was 40

I know it was already answered but still, just incase someone needed an explanation :)

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The sum of two numbers is twenty. Three times the smaller is equal to twotimes the larger. Find the two numbers.
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where G is a constant and M is the mass of the earth. Calculate the work done by the force of gravity on a particle of mass m as it moves radially from 7500 km to 9400 km from the center of the earth.
3. You are buying potato chips at the grocery store. You have a manufacturer’s coupon for $0.50 off and the store is offering 50% off if you buy 2 bags. How do you compute your final cost? (1 point). Subtract $0.50 off of each bag and then divide by 2.. Divide each bag by 2, subtract $0.50 off of each bag, and then add them together.. Add the two bags together, divide by 2, and then subtract $0.50.. Subtract $0.50 from the first bag, add them together, and then divide by 2.

The library is to be given 5 books as a gift. the books will be selected from a list of 21 titles. if each book selected must have a different title, how many possible selections are there?

Answers

This is a combination problem. Order does not matter and the books are all different. You would write this as 21C5 or \tbinom{21}{5}. Combinations are not fractions.

The answer is (21 * 20 * 19 * 18 * 17)/(1 * 2 * 3 * 4 * 5)

which = 20349 different ways these books can be chosen.

Answer:

20,349.

Step-by-step explanation:

We have been that a library is to be given 5 books as a gift. the books will be selected from a list of 21 titles.

We will combinations to solve our given problem.

_(r)^(n)\textrm{C}=(n!)/(r!(n-r)!)

Different ways to choose 5 books from 21 tiles:

_(5)^(21)\textrm{C}=(21!)/(5!(21-5)!)

_(5)^(21)\textrm{C}=(21!)/(5!(16)!)

_(5)^(21)\textrm{C}=(21*20*19*18*17*16!)/(5*4*3*2*1*(16)!)

_(5)^(21)\textrm{C}=(21*19*18*17)/(3*2)

_(5)^(21)\textrm{C}=(21*19*3*17)/(1)

_(5)^(21)\textrm{C}=20,349

Therefore, there are 20349 possible selections.

What is the area of this figure?

Answers

Answer:

35 in^2

Step-by-step explanation:

15+20=35

Solve by factoring. x2 - 49 = 0

Answers

The solution to the given quadratic equation buy factoring is: x = -7 or 7

How to solve quadratic equations?

A quadratic equation is an equation of degree 2 and has the standard form: ax² + bx + c = 0, with a ≠ 0

We can solve quadratic equations by:

- Completing the square

- Quadratic formula

- Factoring

We are given the quadratic equation as:

x² - 49 = 0

Factoring this gives us:

(x + 7)(x - 7) = 0

Thus:

x - 7 = 0 or x + 7 = 0

x = -7 or 7

Read more about quadratic equations at: brainly.com/question/1214333

#SPJ6

Answer:

Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0

Step-by-step explanation:

Solve by factoring.

x2 - 49 = 0Solve by factoring.

x2 - 49 = 0

A 5-pound bag of apples cost $3.50. Use that rate, to complete the table to identify equivalent ratios, and then answer the questions. Apples *? 5 ? 15
Cost 0.70 3.50 7 ?

Apples cost $ __ per pound.

Answers

Well, all you need to do is divide $3.50 into 5 (because that means you are cutting it smaller, 5 ÷ 5 = 1, and you are dividing five 5 times)

Answer: It is $0.7 per pound.

Step-by-step explanation: All you have to do is divide $3.50 by 5 which gives you $0.7.

What is the rate of change for the interval between 0 and 2 for the quadratic equation as f(x) = 2x2 + x – 3 represented in the table? (The table has this: Left side X and the options going down are -2, -1, 0, 1, 2. Right Side f(x) and the options going down are 3, -2, -3, 0, 7) THE ANSWER OPTIONS ARE: 1/5, 4, 5, 10

Answers

By definition the rate of change of a function is given by:
 AVR = (f(x2) - f(x1))/(x2 - x1)
 For the interval [0, 2] We have to make use of the table:
 f(0)=-3 f(2)=7
 Therefore, substituting values in the given expression we have that the average change of rate is given by:
 AVR = (7-(-3))/(2-0)
 Rewriting we have:
 AVR = (7+3)/(2-0)
 AVR = (10)/(2)
 AVR = 5
 Answer:
 the rate of change for the interval between 0 and 2 is:
 AVR = 5

Answer:

(C) 5

Step-by-step explanation:

♥☺

MATH HELP ASAP PLSSSS

Answers

Hey there! :)

Answer:

(30, 0).

Step-by-step explanation:

Solve for the x-intercept, or zero of the equation by setting the equation equal to 0:

y = -2/5x + 12 becomes:

0 = -2/5x + 12

Subtract both sides by 12:

-12 = -2/5x

Divide both sides by -2/5:

-12 (-5/2) = -2/5x (-5/2)

30 = x.

Therefore, the x-intercept is at (30, 0).

Answer:

(30,0)

Step-by-step explanation:

y=0

-2/5 *x +12=0

2x/5=12

2x=12*5

2x=60

x=60/2

x=30
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