Answer:
<em>x = 12 </em>
Step-by-step explanation:
(x + 42)° + 3x° = 90°
x + 3x + 42 = 90
4x = 90 - 42
4x = 48
<em>x = 12</em>
Answer:
C, C
Step-by-step explanation:
Coefficients is what is right before a variable which is 2, 4, 6
Constants is the numbers with no variables which is 10
8x + 10 = 10x - 6
2x = 16
X = 8
Measure 1 is 74
Measure 3 is 74
Measure 4 is 180-74=106
Quadratic equations always include x^2.
Step-by-step explanation: