The answer is C. x, in the first equation. The first equation is easiest to simplify since other than 8y is their common variable, equation 1 is also divisible by 2 so it will not contain any fractions which would be harder to simplify.
Rearranging the first equation, the result would be:
2x + 8y = 12 8y = 12-2x----equation 1
This equation can then be directly substituted to the second equation since the value of 8y is given.
Substitute the right hand of the first equation of 8y which is 12-2x to the second equation. The result would be:
that would be 20 miles per hour. If in 8 hours you're going 160, then divide 160 by 8 and you'd get 20. Each hour is 20 miles. or 8 times 20 is 160. Your answer is 20 miles per hour
Hi! So pretty much to find slope of a triangle you are going to use rise/run. The height being 12 and the length is 14. You get 12/14. Simplified is going to be 6/7. :)
