X plus y plus z equals 180. A triangles angles should ALWAYS add to 180. No ands or buts.
Answer: 
Step-by-step explanation:
The formula for area of a triangle is 
Now we have to isolate for w.
First multiply by the 2 which is the reciprocal of 1/2 to cancel it out.

Now divide by h to isolate w.
It would be 10 because With Nancy, y=4x+30, 30 is the membership fee which is 10 less than Jessicas membership fee of 40.
Answer:
Rate of change of y is 
Step-by-step explanation:
