Answer:
4
Step-by-step explanation:
Just plug in -9 to the equation
6(-9) + 9y = -18
-54 + 9y = -18 isolate 9y
54 - 54 + 9y = -18 + 54
9y = 36 isolate y
9y/9 = 36/9
y = 4
Answer:
The measures of the angles are 50° and 130°
Step-by-step explanation:
Let
x ----> the measure of one angle
y ----> the measure of the other angle
we know that
If two angles form a linear pair , then their sum is equal to 180 degrees
-----> equation A
----> equation B
substitute equation B in equation A
solve for y

Find the value of x
The measures of the angles are 50° and 130°
The total cost of the dinner with a pre-tax tip would be $65.78. If you paid this with a $100 bill, you would get $34.22 back.
Shannon because Shannon got 10 times