Step-by-step explanation:
11. –2√x = –20
(–2√x)² = (–20)²
4x = 400
x = 100
12. x/y = 3/2, 2x = 3y
2(x + y) = 60
2x + 2y = 60
3y + 2y = 60
5y = 60
y = 12
x = 18
Area = (12)(18) = 216 square units
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Answers & Comments
Step-by-step explanation:
11. –2√x = –20
(–2√x)² = (–20)²
4x = 400
x = 100
12. x/y = 3/2, 2x = 3y
2(x + y) = 60
2x + 2y = 60
3y + 2y = 60
5y = 60
y = 12
x = 18
Area = (12)(18) = 216 square units