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
Answer:
See Explanation
Step-by-step explanation:
Given
Required
Find x
The question is incomplete as the relationship between ABD and CBD is not stated.
Assume ABD = CBD
The solution is:
Collect like terms
Solve for x
Assume ABD and CBD are supplementary
The solution is:
Collect like terms
Solve for x
Assume ABD and CBD are complementary
The solution is:
Collect like terms
Solve for x
Two triangle areas of:
10*24/2+18*24/2
120+216
336 u^2
Answer:
Step-by-step explanation:
A. 0.36 g/cm³
Explanation:
Density = mass/volume
We know the mass, but we must calculate the volume.
The formula for the <em>volume of a sphere</em> is
V = ⁴/₃πr³
r = 2 cm
V = ⁴/₃π × 2³
V = (4π×8)/3
V = (32π)/3
V = 33.5 cm³
=====
Calculate the <em>density
</em>
Density = 12/33.5
Density = 0.36 g/cm³
The density of the sphere is 0.36 g/cm³.
