Answer:
D. 80 mph
Step-by-step explanation:
d- distance
- d/50= 0.6d/40+0.4d/x
- 1/50= 0.3/20+0.4/x
- 0.4/x= 0.02- 0.015
- x= 0.4/0.005
- x= 80 mph
Answer:
576
Step-by-step explanation:
3 x 8= 24
24^2= 576ft
1176 square inches for the protective covering for the case
Answer:
8
Step-by-step explanation:
31 divided by 4 is 7.75. you cant have 7.75 boards so youd have to round up to 8