MATHEMATICS MIDDLE SCHOOL

Marina simplified the expression 4x + 5(–4x – b) – (x – 2) to be –17x – 8. What was the value of b?

Answers

Answer 1
Answer: the answer you are looking for is 2!!
Answer 2
Answer:

Answer:

C) 2

Step-by-step explanation:

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Can u guys please help me with the second problem
Evaluate each expression if a= , b = -, c = 0.8, d = 1) - c + d

What is the answer to 591 ÷ 73

Answers

8.09 is the answer :)
8.09589041096 is the answer I got. It took a while to do! I hope this helps you. :)

Show or explain how to write 8,523 in expanded form using 15 hundreds

Answers

Answer:

7 thousands + 15 hundreds + 2 tens + 3 ones = 8523

Step-by-step explanation:

15 hundreds is equal to 1500, when subtracting that from the total of 8523, you get 7023 which still needs to be written in expanded form. The remainder can be written as the sum of:

  • 7 thousands
  • 2 tens
  • 3 ones

Then adding the 15 hundreds that were given, will give a total 8523.
7,000 + 1,500 + 20 + 3 = 8,523

Why is the image of a figure after a translation is congruent to its preimage

Answers


"Translation" means "move it to a different place".

When you buy a hula-hoop or a frisbee and take it home from the store,
its shape doesn't change.  And when you leave home in the morning and
move yourself to school, your shape and size don't change.

Translation does not change the shape or the size of a figure.  All of its
sides and angles are still the same as they were in the original location.
Wherever it may go, it's still congruent to the picture of it that you took
before it moved.

the distance around the lake is 0.75 mile.derek ran 0.8 of the distance on monday . how far did he run? the answer is 0.75 * 0.8 how much?Show your work.

Answers

Answer:

0.6 miles

Step-by-step explanation:

We are given that the  distance around the lake is 0.75 miles

Derek ran on Monday=0.8 of the distance

We have to find that how far Derek  run

0.8 of the distance=0.8* 0.75

0.8 of the distance=0.6 miles

Derek ran on Monday=0.6 miles

Hence, Derek run on Monday=0.6 miles

0.75*0.8= (75)/(100) * (8)/(10) = (75*8)/(100*10) = (600)/(1000) = (6)/(10)=0.6

Which rotation about its center will carry a regular decagon onto itself?A. 54
B. 162
C. 198
D. 252
Please explain!!!

Answers

Answer:

D.252

Step-by-step explanation:

In this question, We have to find which rotation about its center will carry a regular decagon onto itself?

A decagon : 10 sided polygon

As we know, a full rotation can be 360°.

For a decagon: 360/10 =36

For a decagon, any multiple of 36 can map onto itself.

In our options only 252 is the multiple of 36.

So, correct answer is option D252

Jill had a certain amount of money. she spent 15$ downloading new songs. she has 2/5 of the original amount left. how much money did she have originally?

Answers

Let's call the original amount of money x.

We know that she has 2/5 of the original amount left, and that this is equal to $15.

Therefore, 2/5(x) = 15, and x = $37.50.
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