Please help me with these four questions and thanks

Question

asked Sep 4, 2021 230k views

1 Answer

Cjastram · Answer 1 · 2021-09-10T11:09:13+0000

Answer:

number 21 should be adding the 28 to the 375 not subtracting it. the student didn't use inverse operation.

#19 should be A

#20 should be D

Explanation: