Answer:
C
Step-by-step explanation:
Given
m + 5 = 17 ( subtract 5 from both sides )
m = 12 ( multiply both sides by 3 to clear the fraction )
2m = 36 ( divide both sides by 2 )
m = 18 → C
Answer:
CAB = 70°
YZW = 120°
Step-by-step explanation:
CBA = 90° (right angle in a semicircle)
CAB = 180° - CBA - ACB ( angle in a triangle is 180°)
CAB = 180° - 90° - 20°
= 70°
YZW + YXW = 180° (opposite angle are supplementary in a cyclic quadrilateral)
YZW = 180° - YXW
= 180° - 60°
= 120°
(Correct me if i am wrong)
To find the answer to this, you have multiply both expressions by each other. To do this, you have to multiply each term in the first expression by each term in the second expressions. This yields the following: 3x^4-9x^3-3x^2+5x^3-15x^2-5x+10x^2-30x-10. Combing like terms and simplifying gives the final expression: 3x^4 - 4x^3 - 8x^2 - 35x - 10
