Question

The amount of oil used by a ship traveling at a uniform speed varies jointly with the distance and the square of the speed. The ship uses 30 barrels of oil in traveling 85 miles at 42 mi/h. How many barrels of oil are used when the ship travels 26 miles at 54 mi/h? Round your answer to the nearest tenth of a barrel, if necessary.

2.3

15.2

49.6

9.2

My answer is 15.2 barrels

Answer 1

Oil=m*distance*speed^2
30=m*85* 42
m=30/85*42^2

barrels=m*d*speed^2
barrels=(30/(84*42^2)) * 26*54^2

I get 15.2 also

Answer 2

30 * (54/42)^2 * (26/85)

Answer 3

thank you

Answer 4

1. C) 16
2. C) y = 6x / z ; 18
3. C) You can double check with mathway
4. D) ^^
5. A) x = -3; x = 1
6. D) asymptote: x = 3; hole: x = -3
7. D) There is no horizontal asymptote.
8. A) Look to 3
9. B) 15.2 barrels
10. D) nt = 440
11. C) 87.7 mL

Answer 5

@tea is 100% right thank u sm

Answer 6

tysm tea