2 answers:
Step-by-step explanation:
there are 2x and 3y so since it is multiplication you can directly write like below
2x•3y
6xy
Answer:
2x 3y
Step-by-step explanation:
I don't think that's an actual equation, but I'm sure it would just be this
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Answer:
x = −1
Step-by-step explanation:
Let n be old painters time. Then the new painters are 2n. So:
1/n+1/2n=1/6
2+1=2n/6
2n=18
n=9
The old painters take 9 hours; the new ones take 18
☺☺☺☺
Recall that

where
is the angle between the vectors
whose magnitudes are
, respectively.
We have

