Question

7th grade math help @cj49

Answer 1

Chris’s hike started at an elevation of –12 m. His hike finished at an elevation of 235 m.



How much did Chris’s elevation change?

Answer 2

@cj49

Answer 3

@HassanAliPK

Answer 4

I need help with 3 more problems after this please there is my problem:)

Answer 5

The change in elevation is the final elevation minus the initial elevation.

In this case: 235--12 (two minus make a plus)

235 + 12 = 247m

Answer 6

Ravi had $11 in his piggy bank on Monday. He deposited $1.30 into the piggy bank on Tuesday, and removed $2.85 on Wednesday.

How much was left in Ravi’s piggy bank?

Answer 7

deposit means you add to the money in the bank (+)
remove means you minus money in the bank (-)

Ravi starts with $11 plus $1.30 minus $2.85

11 + 1.30 - 2.85 = $9.45

Answer 8

This morning, Robyn wrote a check in the amount of $35.80. This brought her balance down to –$18.25. Suppose n represents Robyn's balance before she wrote the check.



Which equation can be used to represent this situation?









A.

n – 18.25 = 35.80








B.

n – 35.80 = –18.25








C.

n + 35.80 = –18.25








D.

n – 18.25 = –35.80

Answer 9

B.

n – 35.80 = –18.25

This is because Robyn removed $35.80 from here initial bank balance n. This left her with a negative balance of $18.25

Answer 10

which letter is it???

Answer 11

I put the letter at the beginning of my answer...

Answer 12

A zoologist is recording the loss of wolves in a her state. She notes the number of wolves, w, in the state on January 1. One year later, there were 84 wolves in the state, which is 23 fewer wolves than were in the state a year earlier.



Which equation represents this situation?









A.

w + 23 = 84








B.

w – 23 = 84








C.

23 – w = 84








D.

w – 84 = –23

Answer 13

I think you should try to work this one out.

Answer 14

can u at least help me

Answer 15

is it B.

Answer 16

What makes you think it is B? Can I see your steps?

Answer 17

Yes, it's (B)

Answer 18

Ok but we are here to help you learn. It is ok if you're not sure how to start the problem. When the problem states 23 fewer wolves, do you think that means you should minus 23 or add 23?

Answer 19

Is my answer right???

Answer 20

d is right