Answer:
(-1, -4)
Step-by-step explanation:
Answer:
6.11 seconds
Step-by-step explanation:
Given

Required
When will it hit the ground?
When it hits the ground, f(t) = 0.
So, we have:

Solve quadratic equation using formula




Split
or 
or 
or 
Time can not be negative. So:

Answer:
20. 300π m³
21. 457 1/3 π cm³
Step-by-step explanation:
20. r = 10 ÷ 2 = 5
V = 5² × 12 × π = 25 × 12π=300π m³
21. r = 14 ÷ 2 = 7
V = \frac{4}{3} \pi 7x^{3}
V = 457 1/3 π cm³
Answer:
I Feel you. I despise it as well
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
x∧(3/2) = 64 = 8²
(3/2)Log₈ x = 2 Log₈ 8
Log₈ x = 4/3
x = 8∧(4/3)
Therefore
4* x∧(-3/4) = 4* 8∧(-1) = 4/8 = 1/2 = 0.5