Answer:
<h2><u><em>
28°</em></u></h2>
Step-by-step explanation:
<u><em>the triangles are similar, so same angles</em></u>
<u><em>the sum of the interior angles of a triangles is 180°</em></u>
<u><em>take away from 180° the know angles and you will have your answer</em></u>
180 - 62 - 90 =
28°
Answer:
16
Step-by-step explanation:
A right angle has the measurement of 90°. Set the expression equal to 90:
5x + 10 = 90
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
First, subtract 10 from both sides:
5x + 10 (-10) = 90 (-10)
5x = 90 - 10
5x = 80
Next, divide 5 from both sides:
(5x)/5 = (80)/5
x = 80/5
x = 16
16 is your possible value.
~
0 because the line starts at 0
Answer:
d
Step-by-step explanation:
9x + 3 = 7x +19
2x + 3 = 19
2x = 16
x = 8
So, x (8) is the number of chairs in each row with these setups.
Plug 8 into one of the equations and you will find how many chairs total there are.
9(8) + 3 = 75
There are 75 chairs total