C = 3
You isolate the variable by dividing each side by factors that don’t contain the variable
Answer:
42°
Step-by-step explanation:
3x + 54° = 180° [Supplementary angles]
=> 3x = 180 - 54
=> 3x = 126
=> <u>x = 42</u><u>°</u><u> </u><u>(Ans)</u>
Answer:
D and C
Step-by-step explanation:
1) You can cross check using desmos.
2) cos(120) is - 0.5
Answer:
Step-by-step explanation:
First, we expand the equation using the distributive rule:
Hence,
Simplify:
Add like terms:
Subtract 13 from both sides:
Divide both sides by -8:
Exact Form: -245/12 , Decimal Form: -20.4166666, or Mixed Number Form: -20 5/12