Answer:
Step-by-step explanation:
2*50+30*7=100+210=310mm2
Answer:
9.7
Step-by-step explanation:

x ≈ 9.7
Answer:
60%
Step-by-step explanation:
6/10 = .6
.6 x 10 = .60
or you can multiply the fraction by 10 and get 60/100 which is .60
Answer:
40 hours
Step-by-step explanation:
9x + 40 = 400 (with x being how many hours she has worked). We get rid of the 40 on both sides by subtraction. Our new equation is 9x = 360. Now we divide 9 on both sides and we learn that x = 40.
Answer:
7 units down
Step-by-step explanation:
x+4
x-3
4-(-3) =7