MATHEMATICS MIDDLE SCHOOL

Which expression is equivalent to this expression? x(2x + 3) A) 2x2 + 3 B) 2x2 + 3x C) 2x2 - 3x Eliminate D) 3x + 3

Answers

Answer 1
Answer:

Answer:

B

Step-by-step explanation:

x(2x + 3)

Expand the brackets.

x(2x)+x(3)

Multiply the terms.

2x² + 3x

The answer is 2x² + 3x.
Answer 2
Answer:

Answer:

I believe it is B. 2x2 + 3x

Step-by-step explanation:

Because x will go into 2x like 2x^2 and if you multiply x * 3 which it would equal 3x. That's the best I can explain it.

Hope my answer has helped you and if not I am sorry.

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What is the mean of the set of numbers? –12, –4, 3, 7, 11

Answers

To find the mean, we need to add up all of the numbers, and then divide by the number of numbers...

–12, –4, 3, 7, 11 In the data set, there are 5 numbers...

(-12+(-4)+3+7+11)=5/5=1

Answer=1
Hi there! To find the mean we add up all of the data and then divide by how many numbers there are. In this case we have the numbers of -12, -4, 3, 7, and 11. -12+-4+3+7+11=5. Now, we divide by how many numbers there are. In this case we have 5 numbers of data. 5 divided by 5 equals 1. Therefore, the mean of the set of numbers is 1.

With a tank of gas, if you can drive 475 miles, your car uses 12 miles per gallon. Write an equation to model this situation

Answers

12mi=1gal
475mi=(475/12)=39.583gal

Question in the file below. (Khan Academy)

Answers

We can suggest this equation.
(6x+x)+(6x+x)+110º+110º=360º
7x+7x+220º=360º
14x=360º-220º
14x=140º
x=140º/14
x=10º

Answer. x=10º
Work is attached. :D

HELP ME PLEASE :( ? PLEASE

Answers

*sigh* another one

13. 2nd, r=-3
14. 3rd, x=5
15. 3rd, b=7
16. obviously f(x) is a function so 3rd
17. 4th,  9
18. 4th,  x not equal to 0, x not equal to 2
19. 4th no values of x

What is the value of the digit 9 in the number that show kari's mass

Answers

where is the question of this problem

Final answer:

The value of the number 9 representing Kari's mass depends on the digits' place in the number. If it's in the 'tens' place (as in 95), its value is 90; if it's in the 'ones' place (as in 19), its value is 9.

Explanation:

To determine the value of the number that represents Kari's mass, please provide the full number. The exact value of 9 in this number will depend on its placement. For instance, if Kari's mass is 95 kilograms, the value of 9 is 90 because it occupies the 'tens' place. However, if her mass would be 19 kilograms, the value of 9 would be 9 because it is in the 'ones' place. To know the value of digit, understanding the positions of numbers in place value is important.

Learn more about Place Value here:

brainly.com/question/27734142

#SPJ2

What is 3/8 * 2/9A. 5/17




B. 1/12




C. 5/12




D. 1/17

Answers

The answer is B. 1/12 because 6/72=1/12
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