The answer is 97, because when you add up 42 and 55 you get 97. Then you subtract that by 180 because a triangles angles add up to 180. 180-97=83. Z=83. Z and y are supplementary to eachother, so therefore 180-83= 97. Supplementary means they add up to 180.
Answer: 11/15
Step-by-step explanation:
Answer:
- 
Step-by-step explanation:
Given
f(x) =
- 
Evaluate f(19) by substituting x = 19 into f(x)
f(19) =
- 
=
- 
=
- 4
=
-
= - 
Answer: the diameter is 7cm And the radius is 3.5 cm
Step-by-step explanation:
Answer:

Step-by-step explanation:
Use distributive property: 
What is -x * x^2? Answer: -x^3
What is 3 * x^2? Answer: +3x^2
What is -x * -4x? Answer: +4x^2
What is 3* -4x? Answer: -12x
What is -x * -6? Answer: +6x
What is 3 * -6? Answer: -18

Combine like terms, and your answer would be....

Hope this helps :)
Have a great day!