Answer:
x = 3, y = - 2
Step-by-step explanation:
By substitution method,
4x + y = 10 -------> equation 1.
7x + 2y = 17 -------> equation 2.
From equation 1,
y = 10 - 4x ------> equation 3.
Substitute equation 3 in 2,
7x + 2 ( 10 - 4x ) = 17
7x + 20 - 8x = 17
7x - 8x = 17 - 20
- x = - 3
x = 3
Substitute x = 3 in equation 1,
4 ( 3 ) + y = 10
12 + y = 10
y = 10 - 12
y = - 2
Hence,
x = 3
y = - 2
Answer:
Volume of a sphere Formula
Step-by-step explanation:
The Volume of a sphere is:
The radius to the power of three, divided by three. times 4, multiply by Pi.
Answer:
x=-2, y=-4. (-2, -4).
Step-by-step explanation:
x=3y+10
x=y+2
----------
3y+10=y+2
3y-y=2-10
2y=-8
y=-8/2
y=-4
x=-4+2=-2
