Answer: 51 miles per hour
Use the points (2,92) and (5,245)
Then do y2-y1/x2-x1
So 245-92/5-2
=153/3
Simplify= 51
If you're asking how this is possible,
Answer and explanation:
If Sandy and Allen's mother does the job in 5 hours
And Allen and Sandy's contributions completes the job in 2.5 hours
5 hours - 2.5 hours =2.5 hours
Allen and Sandy's contribution is half of the time it took only Allen and Sandy's mother= 2.5 hours
Therefore Allen and Sandy together will take 2.5×2 = 5 hours to complete the job alone without their mother
A similar example: if it takes one person 2 hours to peel 5 potatoes and it takes 1 hour to peel same number of potatoes if a second person helps, then this second person reduces the time used by 1 hour(50%) and would take 2 hours to complete the work.
Answer:
x = -1
Step-by-step explanation:
Distribute by multiplying -5x by 2 and 4 by 2, leaving you with -10x+8+4-5=-3, then solve leaving you with x = -1.
Answer:
the answer is 
hours
Step-by-step explanation:
so first we have to turn the fractions into mixed fractions, in order to do that we multiply the whole number by the denominator and add the numerator, our answer becomes the new numerator over the same denominator.
3 x 4 + 3
12 + 3
15
we do the same thing again.
1 x 3 + 1
3 + 1
4
then after we get our mixed fractions we subtract them from each other. Since the denominators are not the same we multiply to get the same denominators.
we subtract the numerators and keep the denominators.
then we simplify.
