Answer:
x= -3/4
Step-by-step explanation:
Combine like terms
21x+17=x+2
-17. -17
21x= x-15
-x -x
20x= -15
Divide
x= -0.75 or -3/4
Answer:
the answer to this problem would be the last one
Step-by-step explanation:
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Step-by-step explanation:
Let assume that,
So,
Given,
perimeter = 200 feet
We know that,
Perimeter = 2(length + wide)
So,

So length = x + 40 = 30 + 40 = 70 feet
Answer:
-5
Step-by-step explanation:
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There is a formula for adding consecutive integers.
sum = (n * (n+1)) / 2
for summing 1 through 12 it is
sum = (12 * 13) / 2 = 156/2 = 78
The clock goes through two "12-hour cycles" in a day, so the answer is 2 * 78 or 156 times.