Answer:
D. A number divided by three minus fifteen.
1.
yes
x is number of group acts
y is number of indivual acts
2. I would eliminate x by multiplying 2nd equation by -3 then adding
12x+6y=120
<u>-12x-3y=-90 +
</u>0x+3y=30
3y=30
divide by 3
y=10
sub
4x+y=30
4x+10=30
4x=20
divide 4
x=5
each group act takes 5 mins and each individual takes 10 minutes
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Answer:
volume = ⅓×π×4²×9 = 48π sq. meters
Answer:
try 88 or 61 or 29 I really don't know but☺
