Answer:
0.50 seconds
Step-by-step explanation:
The time it takes for an echo to return is the time it takes for the sound to make the round trip between the source and the reflecting object.
The boulder is 80 m away from the source, so the round-trip distance is 2×80 m = 160 m. At a speed of 320 m/s, it takes sound ...
(160 m)/(320 m/s) = 0.50 s
to make the round-trip.
It will take 0.50 seconds to hear the echo.
Answer:
it's third option the one who says 10 units up
The android to this problem is b.7flights
Equation of line: Y= mX + c
where m is slope and c is y intercept.
rewrite equation to be,
-x-7y=-56
-7y=x-56
7y= -x +56
y = -1/7 x +8
slope = -1/7
y intercept = 8
Answer:
A
Step-by-step explanation:
After u calculate the measure of each side by using formula
U should calculate the sum of all sides of this polygon
