Volume = 4/3 * PI * r^3
Volume = 4/3 * 3.14159 * 9^3
Volume =
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<span>
4.18879 * 729
</span></span></span>Volume =
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3,053.62 cubic centimeters
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Answer:
3. 
2. 
1. 
Step-by-step explanation:
3. 2x - 5y = −7
- 2x - 2x
__________
2. 5x + 7y = 14
- 5x - 5x
__________
1. 6x + 3y = 12
- 6x - 6x
__________
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Answer:
17 with a remainder of 25
Step-by-step explanation:
Answer:
9pr = 2q^2
Step-by-step explanation:
28.
px^2 + qx + r = 0
If one root is A then the other root is 2A
We have A + 2A = -q/p and A*2A = r/p
So 3A = -q/p so A = -q/3p and A^2 = r/2p so A = √ (r / 2p)
Equating these 2 equations:-
-q/3p = √(r / 2p)
q^2 / 9p^2 = r / 2p
9p^2r = 2pq^2
9pr = 2q^2 (answer)
The last one because a perpendicular triangle would be drawn from the vertice to the bottom.
