Number 11 please help!!

If EFGH is an isosceles trapezoid,

if

EH=4x-27+

FG=x%2B9+

EG=3y%2B19

FH=11y-21

then EH=FG and EG=FH

set up equations:

4x-27=x%2B9 solve for x

4x-x=27%2B9

3x=36

x=36%2F3

x=12

3y%2B19=11y-21solve for y

11%2B19=11y-3y

30=8y

y=30%2F8

y=15%2F4

y=3.75

so,x=12 and y=3.75

you can also check the length of equal sides and equal diagonals:

EH=4%2A12-27+=21

FG=12%2B9+=21

EG=3%283.75%29%2B19=30.25

FH=11%283.75%29-21=30.25

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values

the answer is 15.50 for one mile

b) is slope: 0   y- intercept 15.5