Answer: $6,600
Step-by-step explanation:
Answer:
Step-by-step explanation:
Factor it by first setting it equal to 0:
Now subtract 9 from both sides:
Divide both sides by 4:
Then take the square root of both sides:
x = ±
, which of course is not allowed. Therefore, we have to allow for the imaginary numbers in this solution. Knowing that,
x = ±
is an equivalent radicand, we can now replace -1 with its imaginary counterpart:
x = ±
Each one of the elements in the radicand are perfect squares, so we simplify as follows:
x = ±
And there you go!
Answer:
the answer is b
Step-by-step explanation:
Answer:
b = 30
Step-by-step explanation:
1/4 (8b-80) +b = 70
2b - 20 + b = 70
3b = 90
b = 30
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