Answer:
3
Step-by-step explanation:
Answer:
Step-by-step explanation:
( x - 3)²
= x² - 2 * x * 3 + 3²
= x² - 6x + 9
Answer:
Son's age = 24 years
Man's age = 48 years
Step-by-step explanation:
Let's take the age of son as x
Man's age = 2x
Twelve years ago,
Son's age= x-12
Man's age= 2x-12
Man is three times as old as his son so,
![\frac{2x - 12}{x - 12 } = \frac{3}{1}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2x%20-%2012%7D%7Bx%20-%2012%20%7D%20%3D%20%20%5Cfrac%7B3%7D%7B1%7D%20)
Solving for x,
2x-12(1) = x-12(3)
2x-12 = 3x-36
2x-3x = -36+12
-x = - 24
x = 24
So if we substitute the values we get,
Son's age = 24 years
Man's age = 48 years
Hope you understand :)
<span>y=-4x-15
4x + y = -15 ...this is standard form
hope it helps</span>
It helps by giving you a hint as to what the fraction or decimal may be. Ex. 30%, 0.3, 3/10