The line for y = -x + 3 is suppose to be negative slope. It’s -x so it goes down 1 right 1. Not up 1 right 1.
"Rowanda 7.24 km and Terrance 5.1 km" is correct:
Rowanda jogged farther than Terrance so the third version, where 3.51km is smaller than 5.65km, can be ruled out. Then you have to look for the difference between the two values of the others--it has to be a difference of 2.14km. in this case it works:
7.24km - 5.1km = 2.14km
this shows she jogged 2.14km more than Terrance :)
The same thing works for the first version with 6.5km-4.36km=2.14km :) so the first one is correct, too
Writing this info out symbolically:
x^2 + (x+5)^2 = 37
Expanding, x^2+x^2+10x +25=37, or 2x^2+10x-12=0.
Reducing, x^2+5x-6=0. factoring, (x-1)(x+6)=0
Solving for x: x-1=0 results in x=1; x=6=0 results in x=-6.
We want only a positive result, so choose x=1 and discard x=-6.
If her pratice was 1.75 hours a day, and she only did it for 8 days. You would multiple the number hours by the number of days and get 14 HOURS
Step-by-step explanation:
We have 9s = 7(s + 8) + 60.
=> 9s = 7s + 56 + 60
=> 2s = 116
=> s = 58.
Therefore the trucker was travelling to
the delivery site at 58 miles per hour.