The answer for the first one is 4 the sacend one is 49/2 the thirst one is 33223
Y = 6 because - ( 1 ) + 7 = 6
Answer:
you can try adding the adding angles up to 180
or if its graphed you can count the units
Step-by-step explanation:
and know that all four sides are congruent and diagonals are perpendicular
i tried :)
Since you have y alone on one side of the equation......
Use substitution and plug in 1/2x-4 for y in the other equation.

Distribute

Combine like terms

Add 8 to both sides

Divide by 4
and 
Plug this value in for x

Simplify

Multiply everything by 8 and simplify

Divide.....

Your answers are:

Answer:
=5x2+5x
Step-by-step explanation:
Let's simplify step-by-step.
3x+3x2+2x2+2x