Answer:
x = 12°
Step-by-step explanation:
(x + 42) + 3x = 90°
(The interior angle equals 90°)
Simplify.
4x + 42 = 90
Subtract.
4x = 48
Divide.
good luck, i hope this helps :)
x= 12°
Information needed:
The two angles add up to 90°
Equation: (x+42)+3x= 90°
Solve:
(x+42)+3x= 90°
x+42+3x= 90°
x+3x+42= 90°
4x+42= 90°
-42 -42
4x= 48°
/4 /4
