Answer:
r=2.9 cm
Step-by-step explanation:
Given:
volume=486π cm^3
height=18 cm
volume of a cone=πr^2h
486=π*r^2*18
486=18π*r^2
486/18=πr^2
27/π=r^2
27/3.14=r
8.5987=r^2
=r
2.9323 =r
2.9=r(after converting to nearest tenth)
Rewrite the expression x^3+10x^2+13x+39/x^2+2x+1 in the form q(x)+r(x)/b(x)
1 answer:
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Answer:
Step-by-step explanation:
y = 3x + 4, and
y = x + 2
------------------
Use the vale of y in the 2nd equation in the first:
y = 3x + 4
x + 2 = 3x + 4
-2x = 2
x = -1
Use this value of x (-1) in either equation to find y:
y = x + 2
y = -1 + 2
y = 1
==========
(-1,1)
See attached graph.
