Answer:
81
Step-by-step explanation:
Its a perfect square and 27*3=81
Answer:
D
Step-by-step explanation:
To obtain f(g(x)) substitute x = g(x) into f(x), that is
f(10 - 5x)
= (10 - 5x)² + 5 ← expand (10 - 5x)²
= 100 - 50x - 50x + 25x² + 5 ← collect like terms
= 25x² - 100x + 105 → D
It could possibly be one.
<em>x = 8</em>
Step-by-step explanation:
![3x-1=-2x+39](https://tex.z-dn.net/?f=3x-1%3D-2x%2B39)
Add 1 to both sides.
![3x=-2x+40](https://tex.z-dn.net/?f=3x%3D-2x%2B40)
Add 2x to both sides.
![5x=40](https://tex.z-dn.net/?f=5x%3D40)
Divide 40 by 5.
x = 8
First number: x = 19
Second number: Y = -5
x + 2y = 9
2x + y = 33