Answer:
x = -13
Step-by-step explanation:
9 - 2x = 35
Subtract 9 from both sides of the equation:
9 - 2x - 9 = 35 - 9
-2x = 26
Divide both sides of the equation by -2:
x= -13
Answer: Diameter = 4 cm
Step-by-step explanation:
20π = (π)(r^2)(5)
divide by 5 * π
4 = r^2
find the square root of both sides
2 = r
2 * 2 = d
4 = d
Answer:
x=2.5, y=-5. (2.5, -5).
Step-by-step explanation:
5y+2(2.5)=-10
5y+5=-10
5y=-10-5
5y=-15
y=-15/5
y=-5
x+6+3x=30
x+3x+6= 30 ( combine like terms)
4x+6= 30
move 6 to the other side
sign changes from +6 to -6
4x+6-6= 30-6
4x= 30-6
4x= 24
divide both sides by 4 to get x by itself
4x/4= 24/4
answer:
x= 6
