Answer:
If x varies directly as y, then x=ky. y=5 and x=2.5 are substituted into x=ky to find k.
2.5=5k
k=2.5/5
k=5.
K =5 is substituted in x=ky to find y where x is 10.
x=5y
10=5y
y=10/2
y=2
Answer:
X is four times less/smaller than Y or Y is four times greater than X
Step-by-step explanation:
Not sure what you are asking to do
(x+3)(x^2-3x+9)
this gets the x^3 while the 3x cancels out and 3*9=27
hope this helps although i didn't explain very well :)
Answer:
no.
Step-by-step explanation:
never.
Answer:
8631.83
80074
6857
8631.83
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