physics
Yes, that is correct. I would really encourage you to carry the units through from start to finish. It seems like extra work, but it can help detect errors.
math
Yes, you are correct!
math
type LCM, least common multiple
math
I think 72 is the LCM, least common multile, not GCF, greatest common factor.
Algebra
Add 4 to both sides. Then, square both sides. Does that help?
Pre-algebra
To clarify: (-4)^4 is not equal to -256.
Pre-algebra
-256 is not the correct answer.
math
Yes! All answers are correct. Note that answer 4 could be reduced to 19/30 hours.
math
BUBBA's answers start with a wrong answer.
Algebra 2
Correcting typo The line 5 = H = 1 shoud read: 5 = H - 1
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