1. Subtract 8 from both sides
2. Simplify to get x= -23
5.65 in decimal and 113/20
Answer:
12 years old.
Step-by-step explanation:
1) 2x+x=18
2) Now solve 2x+x=18
Add alike terms
3x=18
Now divide both sides by 3 (3x/3 and 18/3)
x=6
So Hannah is 6 years old. Her sister must be 12.
Answer:
X=-7
Step-by-step explanation:
X + 142=135°
X=135-142
X=-7
So the value of X is -7
H'(x) = 2f'(x)
h'(1) = 2*f'(1) = 2*4
h'(1) = 8
