Answer:
40
Step-by-step explanation:
Answer:
e owou
Step-by-step explanation: 123
Answer:
Step-by-step explanation:
Let the equal number of hours be represented by variable H;
The two equations will be as follows;
Jack; 40 +30H
Mark; 50 +25H
Next, equate them;
40 + 30H = 50 + 25H
30H - 25H = 50 - 40
5H = 10
H =10/5
H = 2hrs
Therefore, they charge the same amount at 2 hrs.
B.) The amount charged;
Replace the variable H in any of the two equations above with 2 to solve for the amount.
Equation 40+30H = 40 + (30*2)
=40 + 60
= $100
<h3>
Answer: 6 cm^3</h3>
This is the same as saying 6 cubic cm
====================================================
Work Shown:
d = density = 4 g/cm^3
m = mass = 24 g
v = volume = unknown
--------------
d = m/v
4 = 24/v
4v = 24 .... multiply both sides by v
v = 24/4 .... divide both sides by 4
v = 6 cm^3
1200 * 0.05 * 4 = 240$ the amount of interest after 4 years.
total 1200+240=1440$
