Answer:
63 mm
Step-by-step explanation:
The formula to find the volume of a cylinder is V=h
You square the radius which would be 9
Then multiply that by 7 which is the height and get 63
Since it is left in terms of pi you do not need to multiply by pi so you add the pi symbol to the end.
Then get 63 mm
Answer:
C. 84.
Step-by-step explanation:
27 students in his grade took the test. 14 did not find it easy. 14/27 is 0.52. 0.52 times the 162 total students is 84.
I assume you mean x squared in the first equation
Because both are equal to y, they are equal to each other so x + 5 = x^2 +3
If we then move everything over to one side, we get x^2 - x - 2 = 0
Then factorise it to (x-2)(x+1) = 0
And solve both parts separately
x + 1 = 0
x = -1
x-2 = 0
x = 2
Sub both values into the simplest equation in this case y=x+5
to get y = 4 and y = 7