Answer:
15
Step-by-step explanation:
Given the function
and 
let f(x)=y
Substitute in f(x)
From the definition inverse function
if 
⇒ 
Substitute this in the above expression
Substitute y=10
⇒
Therefore a=15
Answer:
U have to put up the graph or something so i can answer your question. thank you!
Step-by-step explanation:
<span>Consider the triangles ERT and CTR.
|ER|=|CT| shown
(</span>Therefore, one can say that segment ER is congruent to segment CT.)
m(R)=m(T)= 90°shown
(By the definition of a rectangle, all four angles measure 90°)
|RT|=|TR|
so we have Side Angle Side congruence.
By the <span>(SAS) Theorem, the triangles are congruent.
Answer: </span><span>C (SAS) Theorem</span>
