Let's call the younger student's age A and the older student's age B. The teacher's age will be T.
B = 2A
T = 5B
T+5 = 5(A+5)
Simplify the last equation.
T+5 = 5A+25
T = 5A+20
Now we have two equations solved for T, so we can set them equal to each other.
5B = 5A + 20
We can plug 2A in for B
5(2A) = 5A + 20
10A = 5A + 20
5A = 20
A = 4
To find T, we plug 4 in for A in T = 5A + 20
T = 5(4) + 20
T = 40
The answer is 40 years old.
We have the following expression
This is equivalent to
Since
we have that
Therefore, the answer is the second option from top to bottom.
Answer:
2
Step-by-step explanation:
the y-intercept is where the line meets the y-axis
Answer:
i do not know what you are talking about. I see no question...
Step-by-step explanation:
6 2/7is rational
-19is rational but next I dont know
