Answer:
hope
it helps!
Step-by-step explanation:
3.68181818
write it into a formula
60=2x+x
60=3x
20=x
then double check 20 *2 = 40 +20 = 60
so the number is 20
Answer:
The equation is likely (x2 -2x -3)/(x+2) and to simplify you can do polynomial synthetic division or long division. Using long division because it works in all cases:
________
x+2√x2 -2x -3 how many times does x go into x2 , x times
x - 4 ______
x+2√x2 - 2x -3 multiply x by x + 2 and create the next row
-(x2 )
-4x - 3 bring down the -3 and repeat first step. how many times does x go into -4x, -4 times
-(-4x - 8) multiply x + 2 by -4
5 (this is the remainder but it must be in the form 5/(x+2)
so the answer is x - 4 + 5/(x + 2). Hopefully, this is what your teacher considers "simplified".
Step-by-step explanation:
Copied this from wyzant.com.
Answer:
Step-by-step explanation:
Given
Required
Evaluate 
We have:
Next, we calculate f(a)
Substitute a for x in
Substitute values for f(x) and f(a) in
Take LCM of the numerator
Split:
Convert / to *
Express a - x as -(x-a)
Divide numerator and denominator by x - a
Hence:
Example 1: Find the equation of a circle whose center is at (2, - 4) and radius 5.
Solution to Example 1:
given (h , k ) = (2 , - 4) and r = 5
substitute h, k and r in the standard equation
(x - 2)2 + (y - (- 4))2 = 52
(x - 2)2 + (y + 4)2 = 25
