5x²+13x-4-17x²-7x+19+15x²+5x-21x-7=
=5x²+15x²-17x² +(13x-7x+5x-21x) -4-7+19=
=3x²-10x+8
Answer:
18,20,22
Step-by-step explanation:
18,20,22 are consecutive even numbers that sum to equal 60.
Answer:
I belive the answer would be 452.16
Step-by-step explanation:
The formula to find the volume of a cylinder is 
h = height
r = radius
The radius for this is 4 and the height is 9
instert your number into your equation 
and from there i would just put it into a calculator and you get
or 452.3893-
Answer: y= 16.97 ×=7.27
Step-by-step explanation:
Click on file for workings