Suppose that this person drives at r mph going to the mountains, and gets there in 12 hours. Returning, this person drives at (r+20) mph and gets home in 8 hours. We don't know the distance yet, but can solve for the initial speed, r, by setting
d = 12r = (r+20)(8). Solving for r, r=40 mph (going) and (40+20)mph = 60 mph (returning. Since d=12 r, d = (12 hrs)(40 mph) = 480 miles (answer).
Answer:
126
Step-by-step explanation:
21 + 4 = 25 (blue plus white marbles)
150/25 = 6 (all the marbles divided by how many we know are white and blue)
21 x 6 = 126
Answer:
It's A
Step-by-step explanation:
The correct form for distributive property is:
6(3x-5) ---> 18x-30, you have to multiply the number in the parenthesis.
Answer:
It is a function.
Step-by-step explanation:
This relation <u>is</u> a function because it does not repeat any x values in the set of data points.
A function is a set of points where the input values, or x values, do not repeat themselves.
Hope this helps!
Nah, im trying to do my math homework :[