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Answer:
–9(3x³ – 8x + 9)
Step-by-step explanation:
–27x³ + 72x – 81
The above equation can be factorised as follow:
–27x³ = –3 * 3 * 3 * x * x * x
72x = 2 * 2 * 2 * 3 * 3 * x
–81 = –3 * 3 * 3 * 3
Common factor = 3 * 3
Greatest common factor = 9
Thus,
–27x³ + 72x – 81 = 9(–3x³ + 8x – 9)
–27x³ + 72x – 81 = –9(3x³ – 8x + 9)
2. Is 65
3. X is 12
Hope this helps
Answer:
i knw the first one .um 4(3+7) i barely knws the answer.19 which is you took 4×3+7=19
Answer:
1005.31 ft³
Step-by-step explanation:
Volume of cylinder is V= πr²h
d= 8 ft ⇒ r= 8/2= 4 ft
h= 20 ft
V= π*4²*20 ≈ ft³ = 1005.31 rounded to the nearest tenths