Answer:
5,089.4 cm³
Step-by-step explanation:
Volume of the cylinder = πr²h
Where,
r = 9 cm
h = 20 cm
Volume of cylinder = π×9²×20 = π×81×20
Volume = 5,089.3801 ≈ 5,089.4 cm³ (1 dp)
Answer:
<h2>7</h2>
Step-by-step explanation:

To find f(-2) , Substitute -2 for x in the given equation ;

To find g(f(-2)) ;

To find g(2) , substitute 2 for x in the given equation

the answer should be 44. you plug in -7 for x.
Answer:
x=-3
Step-by-step explanation:
4/x=8/(x-3)
We can solve this using cross products
4 ( x-3) = 8x
Distribute
4x -12 = 8x
Subtract 4x from each side
4x-4x-12 = 8x-12-4x
-12 =4x
Divide each side by 4
-12/4 = 4x/4
-3 =x