Need help!! question is on the picture.

√d=4×5

√d=20

square both sides

√d²=20²

the square cancels the square root

d=400

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right