Question

At noon, the atmospheric pressure at a weather station was 763 mmHg. At 4 p.m., the atmospheric pressure had changed by 29 mmHg.

Which expressions could represent the atmospheric pressure at the weather station at 4 p.m.?

Choose two answers that are correct.

A.
(29 – 763) mmHg

B.
–(763 + 29) mmHg

C.
(763 – 29) mmHg


D.
(763 + 29) mmHg

Answer 1

@triciaal @arielle

Answer 2

Hmm.. Let me think I

Answer 3

ok

Answer 4

so when it says "the atmospheric pressure HAD CHANGED by 29mmHg, what does that mean to you?

Answer 5

well it means? i do not know teach me

Answer 6

Does It decrease or increase..?

Answer 7

it decrease?

Answer 8

yea

Answer 9

No, Increased. SO within that what do you think your answer will be? It's increasing so increasing means what?

Answer 10

it is going up

Answer 11

Yes. But it's not both adding, one is -. one is +, choose what you think is best.