Answer:
Jack is 6 and Mom is 30
Step-by-step explanation:
J = Jacks age
M = Mom's age
5J = M
In 6 years, so add 6 to the age
3(J+6) = (M+6)
We have a system of 2 equations and 2 unknowns
Lets simplify the 2nd equation
3(J+6) = (M+6)
3J + 18 = M+6
Substituting M =5J
3J + 18 = 5J +6
Subtract 3J from each side
3J-3J + 18 = 5J-3J +6
18 = 2J+6
Subtract 6 from each side
18-6 = 2J+6-6
12 = 2J
Divide each side by 2
12/2 = 2J/2
6=J
Jack is 6
We still need to find Mom's age
M = 5J
= 5*6
=30
Mom is 30
Answer:
p(n)=(5n+1)^2 – (2n–1)^2=
(5n)^2 +2*(5n)*1+1^2-((2n)^2 - 2*(2n)*1+1^2)=
25n^2+10n+1-(4n^2-4n+1)=
25n^2+10n+1-4n^2+4n-1=
21n^2+14n=
7*(3n^2+2n)
7 divides p(n)=7*(3n^2+2n) for each n!
Answer:
b=3
Step-by-step explanation:
-7+1/3b=-6
+7 +7
1/3b=1
*3 *3
b=3
Answer: true
Step-by-step explanation:
The answer is B. $1600 because you have to subtract it
