I don't know if this is right but I think it is $4500
So,
First you have to distribute the numbers outside of the parentheses (you multiply them with the numbers inside of the parentheses
-18+(-9a) + 8a +36=11
Then collect like terms
18-1a =11
-18 -18
---------------------
-1a=-7
Divide both sides by -1
a=7
Hey there!
<u>Opposite sides are congruent:</u>
all of them
<u>opposite angles are congruent</u>
rectangle and square
<u>all sides are congruent</u>
rhombus and square
<u>diagonals congruent:</u>
rectangle, rhombus, and square
<u>diagonals are perpendicular</u>
square and rhombus
Have a terrificly amazing day!
At around 20'000ft. and higher.