Solve the system using substitution
1. x+y=8
y=3x
a (4,12)
b (2,6)
c (1 over 2, 3 over 2)
d (-4,-12)

i believe the answer is 68cm

step-by-step explanation:

i just took 34 x 2 because the space between v and y is the same as y to k.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

3; 9 is 8 to -4

step-by-step explanation: