Answer:
A. x = 5
Step-by-step explanation:
3x + 9 = 24
→ Minus 9 from both sides
3x = 15
→ Divide both sides by 3
x = 5
x = 8, y = 0
y=
x-4
y=-
x+2
We substitute y=x-4 into the y for y=-x+2, and we get:
x-4 = -x+2
+x +x
x -4 = 2
+4 +4
x = 6
(4)x = 6 (4)
The 4's cross out and we get:
3x = 24
/3 /3
x=8
Not we substitute x(8) into one of our original equations: y=x-4
y=x-4
y=(8)-4
y=4-4
y-0
We get our final answer: (8,0)
Hope that helps!
12
You want to find an equivalent ratio with 2:3. As the question already gives you 8 where 2 used to be, you need to find out what change occurred to get from 2 to 8 (a multiplication of 4). To find the missing part of the ratio, multiply 4 with 3 to get 12.
Use PEMDAS, Parenthesis and Exponents, then Multiplication and Division, then Addition and Subtraction, all from left to right in the line. So 68+7=75, and 93+75=168
