(a) y = -7/5x + 17.8
(b) it decreased by 7/5 per day.
Hope this helps!!! :)
Sound travels 10200m farther through stone in 17 seconds than through aluminium
Speed of sound in aluminium = 3100 m/s
The speed of sound in stone = 3700 m/s
Time taken = 17 minutes
Distance traveled = Speed x Time
Distance traveled by sound in aluminium in 17 seconds = 3100 x 17
Distance traveled by sound in aluminium in 17 seconds = 52700 m
Distance traveled by sound in stone in 17 seconds = 3700 x 17
Distance traveled by sound in stone in 17 seconds = 62900 m
Difference in the distance traveled = 62900 - 52700
Difference in the distance traveled = 10200 m
Sound travels 10200m farther through stone in 17 seconds than through aluminium
Learn more here: brainly.com/question/13096122
To find the amount of work done, we need to use the formula for work.
The formula is: Force x Distance.
The force being given is 50N, and the distance traveled is 3M.
With this information, we're ready to solve!
Let's plug in our numbers to the formula given above.
Work = 50 x 3
50 x 3 = 150.
The amount of work done is 150J.
I hope this helps!
Multiply 2x30 = 60 and 2x5= 10 that make 60+10 which is 70
