A drop of oil makes a circular ring in a water puddle. The radius of the oil ring expands at 1.5 cm per second. If r(t)=1.5t and
a(r)=лr^2, what composition of function describes the area of the oil ring in terms of time?
1 answer:
Answer:

Step-by-step explanation:
Given
Required
Determine the area in terms of time
From the question, we have:
-> radius per time
and
--> area from radius
The interpretation of the question is to find the composite function: a(t)
If
, and
, the
Substitute 0.5t for r



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Step-by-step explanation:
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Description: 8 2/3 - 6 1/2
10y=x because if you multiply your y by 10, you would get the x
Answer:
JL = 138
explanation:
JK + KL = JL
5y+10+9y+2=17y-15
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Answer:
4 and 9
Step-by-step explanation:
t2-13t+36=0
factors of 36 are:
1,2,3,4,6,9,12,18,36
factors that add up to 13 are: 9*4
factorise the equation:
(t-9)(t-4)=0
t-9=0 ---> t=9
t-4=0 ---> t=4