Use the substitution method
w(x)=9x+8
w(5)=9(5)+8
Do the parenthesis first then add because of using PEMDAS
P= Parentheses
E= Exponents
M= Multiplication
D= Division
A= Addition
S= Subtraction
45+8
=53
Answer: w(5)=53
Answer:
The ratio between girls and boys in the cafeteria is 5:7.
Step-by-step explanation:
1) 25:35
2) Simplify by dividing each variable by 5, since it's the greatest common factor between them.
3) 25/5 is 5. 35/5 is 7.
4) 5:7
Answer:3 hour
Step-by-step explanation:
Hope that helps
Standard deviation I think
Answer:
5
Step-by-step explanation:
9x+6y=-3
9x+6(-8)=-3
9x-48=-3
9x=45
x=5
