Answer:
20
Step-by-step explanation:
The whole straight line is 180 degrees. Add 3x, 2x, and 4x all together to get 9x. Then do 180/9x. This will give you 20. x=20.
The answer is D. He divided both sides by 5 instead of dividing both sides by -5.
Answer:
c. number shows the proportional relationship between x and y...
P= 2l+2w
P-2l= 2w
1/2P -l= w
Rearrange into standard form.
w= 1/2P -l
