Answer:
w = 4
Step-by-step explanation:
distribute 10(w+3)=70
10w + 30 = 70
subtract 30
10w = 40
divide by 10
w = 4
Answer: 2a+c
Step-by-step explanation: You add all variables that are positive then you subtract by negatives or vice versa. Add 3a+6a-7a yes subtract the 7a which gets you 2a. Add 8b+b-9b, you get 9b-9b which is 0 so you don’t need b in the problem anymore. -5a+4c+2c then you get c, because it is 1 c. So your answer is 2a+c. :P Hope this helped.
Answer: x=23
Step-by-step explanation:
X-8=15. Add 8 to both sides. The 8 cancels on the left side because -8 +8 is 0 leaving x. 15+8=23 meaning x=23.
Answer:
(12,6)
Step-by-step explanation:
If you move 6 units right, you get to (12,10). Moving 4 units down takes you to (12,6).
Answer:
Circumference=C=377 mm
Step-by-step explanation:

d=120 mm
C=3.14*120=377 mm