Let wind speed = x mph
when she rode 2 miles against the wind we have:-
speed = distance / time so
20 - x = 2 / t -------(1) where t is the time she took.
when riding with the wind we have
20 + x = 3 / t--------(2) adding equations (1) and (2):-
40 = 2/t + 3/t
40 = 5/t
t = 5/40 = 1/8 hr
x = 20 - 2 / 1/8 = 20 - 16 = 4
Wind speed was 4 mph Answer
It’s H. You have to set up an equation: y=10x-11. -11 is the starting value, so you put it at the end. You add ten each time, so you put 10x. Just plug in 100 for x, and you’ll get 989
Answer:
x = 1
Step-by-step explanation:
x = ln (e)
We know that the natural log and the exponential function are opposites
They cancel out and leave 1
x =1
Answer:
A.
Step-by-step explanation:
btw this is a biology question, but the reason it's A because think of external+ outside. all the other multiple choices are internal. Such as when you're hungry that's inside of your body same as being thirsty
