Z=8 because you have to get z by itself therefore you have to divide 8 on both sides leaving z to equal 8
Answer:
Step-by-step explanation:
180-40+20=120
180-120+39=?
99=?
Answer:
Alternate interior angles theorem
Step-by-step explanation:
Alternate interior angles theorem
Answer:
The correct option is D.
Step-by-step explanation:
The given equation is
According to the addition property of equality and are equivalent equations.
Use addition property of equality, add 3x on both the sides.
Therefore Sam's work is incorrect because he make calculation mistake.
According to the subtraction property of equality and are equivalent equations.
Use subtraction property of equality, subtract 5x from both the sides.
Therefore Roy's work is correct because he used subtraction property.
Option D is correct.
Answer:
x=18
Step-by-step explanation:
We need to find the areas of the rectangles
1st rectangle
A= l*w
A = (2x+4)*9
= 18x+36
2nd rectangle
A = l*w
= 15*(3x-30)
= 45x-450
Since the area of the rectangles are equal, we set these two equations equal
18x+36 = 45x-450
Subtract 18x from each side
18x-18x+36 = 45x-18x-450
36 = 27x-450
Add 450 to each side
36+450 =27x
486 = 27x
Divide by 27 on each side
486/27 = 27x/27
18=x