Solutions: x=3 , y=5 , z=2
x+y+z=10
2x-5y+2z=-15
4x+y-z=15
Answer:

Step-by-step explanation:
From the way the answers are presented, it can be seen that x refers to the radius of the base of the cone
radius: 
and we are told that the height is twice the radius, so:
height: 
and now we use the formula to calculate the volume of a cone:

where
is volume,
is radius, and
is the height. and
is a constant
in this case


so we substitute thisvalues in the formula for the volume:

Rearranging the terms

which is option A.
I 150
ii 200
iii 350
i 50
ii 200
iii 250
Answer: x=16
Step-by-step explanation:
Answer:
300+0.75x=y
Step-by-step explanation:
x(the number of large coffes ordered)
y(the total donation)