Answer:
400 students
Step-by-step explanation:
4,000/10 = 400
Answer:
12 2/5 hours
Step-by-step explanation:
12 2/5 hours have been logged in all.
Answer:
Step-by-step explanation:
-180=-10v+10
-190=-10v
v=19
I’m guessing that this is for systems of equations?
n - nickels
d - dimes
These are the equations you start off with.
n = 5d-2
0.95 = 0.10d+0.05n
Substitute the top equation for n into the variable n in the bottom equation.
0.95 = 0.10d+0.05(5d-2)
Solve for d.
0.95 = 0.10d+0.25d-0.10
1.05 = 0.35d
3 = d
Substitute d into the top equation and solve for n.
n = 5(3)-2
n = 15-3
n = 12
There are 3 dimes and 12 nickels in the coin purse! Hope this helped <3
