I think the answer is 21. I’m not sure but if I remember it’s 40 + 20 = 60. 180 - 60 = 120 and then it’s a vertical angle which is equal so then it would be 120 + 39 = 159. Then 180 - 159 = 21. Sorry if this is wrong I haven’t done this in a while. Have a good day!
Answer:
they are equal
Step-by-step explanation:
f(x) means the same thing as y.
Answer:
The solutions are 
and 
Step-by-step explanation:
we have
Divide by 
both sides
------> 
we know that
The formula to solve a quadratic equation of the form 
is equal to
in this problem we have
so
substitute
See attached picture for answre
m= 2.5x is the equation you want to use, hope this helped! <3
