X represents John's age
Ben = x+5
John = x
x+2(x+5)=46
use the distributive property for 2(x+5)
x+2x+10=46
combine like terms
3x+10=46
subtract 10 from each side
3x=36
divide both sides by 3
x=12
John is 12 years old.
Which set of ordered pairs is not a function? A. (3, 1), (–1,1), (1, 1), (3, −1) B. (–3, 1), (–1, 1), (1, 1), (3, 1) C. (–3, 1),
mash [69]
A set is NOT a function when there's an x-coordinate that is repeated, so let's check who is who.
Let me walk you through this real quick:
-4x + 9 (10x - 1)
-4x + 90x - 9 (open up the brackets)
90x - 4x - 9
= 86x - 9
We know the full protractor measures 180 degrees.
We need to know what angle it is on. By looking at it, it looks like it is on 135.
180-135= 45
The angle is 45 <em>degrees.
I hope this helps!
~kaikers</em>
1. A
2. D
3. D
Those are the answers I got I hope this helps you!!