Answer:
(x - 9)(x + 8)
Step-by-step explanation:
Given
x² - x - 72
Consider the factors of the constant term (- 72) which sum to give the coefficient of the x- term (- 1)
the factors are - 9 and + 8, since
- 9 × 8 = - 72 and - 9 + 8 = - 1, thus
x² - x - 72 = (x - 9)(x + 8)
Answer: For you : 100+5x=200
For Josh : 50+10x=200
Step-by-step explanation:
Given : Cost of video game.= $200
Money you have = $100
Money you add each week = $5
Let x be the number of week, the money( in $) you have after x weeks = 100+5x
Josh has $50 in save $10 each week , then money( in $) Josh has after x weeks = 50+10x
Required equations :
For you : 100+5x=200
For Josh : 50+10x=200
C) 3, 4, 5
any triangle with that ratio will make a right triangle
69, 70, 71, and 72
69 and 71 are the first and third digits. 69+71=140
