Let's define variables:
x = Rate in $ / hr of the mechanic working 15hr
y = Rate in $ / hr of the mechanic working 5hr
We have the following system of equations:
x + y = 130
15x + 5y = 1400
Solving the system we have:
x = $ 75 / hr
y = $ 55 / hr
Answer:
the rate charged per hour by mechanics was:
x = $ 75 / hr
y = $ 55 / hr
The answer is -2 (1-4x) = 3x + 8 is 2.
Answer:
Step-by-step explanation:
When given points, whether that be on a graph or a table, those can be used to find the slope using the equation y2 - y1 / x2 - x1.
y2 - y1 / x2 - x1
(Pick 2 pairs if points. In this case I am using (2, -1) and (-1, 3) from your data table. From here, just plug it in.
-1 - 3 / 2 + 1
-4 / 3
Your slope is -4/3. Hope that helps! Take care.
Length x width x price
8x2 = 16
16x$3 = $48
the total cost is $48
The angle of B is 
Explanation:
It is given that
and 
To determine the
, let us use the law of sine formula.
Thus, we have,

Substituting the values in the formula, we have,

Multiplying both sides by 3,we get,

Simplifying and dividing, we get,

Multiplying both sides by
, we get,

Thus, 
Hence, The angle of B is 