Answer:
Step-by-step explanation:
When there is a ( + ) in front of an expression in parentheses, there is no need to change the sign of each term. That means, the expression remains the same. Just remove the parentheses
Collect like terms
Subtract 3 from 12
Collect like terms
Hope I helped!
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Answer:
30
Step-by-step explanation:
perimeter = side 1+side 2
12+18=30
Answer:
Step-by-step explanation:
x²y = k, where k is a real constant.
When x = 3.5, y = 8.
=> (3.5)²(8) = k, k = 98.
When y = 8/9,
we have x²(8/9) = (98).
=> x² = 110.25
=> x = 10.5 or x = -10.5.
Since we want the negative value,
the answer is x = -10.5.
Answer:
48 minutes
Step-by-step explanation:
3 x 6 = 18
8 x 6 = 48
