Lines 1 || m, then Zz= a. 120 b. 60 c. 180 d. 90
1 answer:
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Step-by-step explanation:
(a-b)^2=(a^2-2*a*b+b^2)
4*(x^2-2x+1)-9=4x^2-8x+4-9=4x^2-8x-5
if you have to calculate the Δ
there is it: 4x^2-8x-5=0
Δ=b^2-4*a*c=64-4*4*(-5)=64+80=144
-b±Δ/2*a=8±12/8=
=8+12/8=20/8|:4=5/2
=8-12/8=-4/8|:4=-1/2
Step-by-step explanation:
We have, a sphere and a cylinder have the same radius and height. The volume of the cylinder,
The volume of sphere is :
The volume of cylinder is :
Dividing the volume of sphere and the volume and cylinder, such that,
As r = h
So, the volume of sphere is (four-third) of 11. therefore, the correct option is (A).