Answer:
Step-by-step explanation:
To find the inverse of a function, begin by switching the places of the 'y' and 'x' variables. Instead of f(x), we will substitute in 'y' for this purpose.
Substitute in 'y':
Swap the 'y' and 'x':
Square both sides:
Simplify:
**Keep in mind, when finding the inverse of a square root function, there is always going to be a restricted domain. In this instance, the restricted domain is
∠AXY=∠XBC=55°(corresponding angles)
XB=XC⇒ΔXBC is isosceles, so ∠XBC=∠XCB=55°
The sum of all the angles in a triangle is 180°⇒
55°+55°+∠BXC=180°
∠BXC=70°
Answer:
-5
Step-by-step explanation:
Let's call this unknown number x.
Then (x+15)-8=2. Therefore, x=2+8-15 = -5.