<span>So far I have:
(1.25 + 1) </span><span>if </span>x<span> is in the interval</span><span> (-inf,7]
(2.25 +1) </span><span>if </span>x<span> is in the interval (7,13)</span><span>
(3.50+1+3) </span><span>if </span>x<span> is in the interval [13,inf)</span>
Answer:
it is 1
Step-by-step explanation:
i think
It is a similar triangle so the side length of the smaller triangle (x and x-2) are in the same ratio as the bigger triangle (2x+5 and 2x-1). As the ratio is the same, you can equate them and solve for x.
1)
Volume of a cone is 1/3×πr^2h=1/3×2^2×3×π=4πcm^3
And volume of cylinder is π×r^2h=24πcm^3
Add them 28π=28×3.14=87.92 or 88cm^3
2)
V=4/3πr^3
V=4500π ft^3
3)
V=4/3πr^3
Its given
972π=4/3π×(d/2)^3
972=4/3×d^3/8
972×8×3/4=d^3
d=18inches
