Answer: 3 11/20
explanation: change 3 3/4 to a mixed number which is 15/4 then get a common denominator which is 75/20 - 4/20 then subtract and get 71/20 and then change to a mixed number and simplify to get 3 11/20
Answer:
14 years old
Explanation:
Use this system of equations if G=George and J=Jeannie:
G-12=J
50=(G+5)+(J+5)
So, change second equation becomes
40-G=J
Then use substitution:
G-12=40-G
2G=52
G=26
Then, to find Jeannie’s age, go back to one of the equations and substitute G.
26-12=J
So, J=14
Jeannie is currently 14 years old.
Answer:
Step-by-step explanation:
- 3(8+9) = Parenthesis
- 3(17) = Multiplication
- 51
Step-by-step explanation:
m=-2
m^2+9m+3
substitute-2 in m
-2^2+9(-2)+3
= -19
Pretty sure the equation is 4x-3=63 to solve for X.
1. Add three on both sides to get 4x=63
2. Then divide 4 on both sides, getting x=15
