Peter earns $12.40 each week for doing his chores .Ria earns 1.2 times as much money per week as Peter. How much do Ria earn eac
1 answer:
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For this case we have the following system of equations:
We observe that we have a quadratic equation and therefore the function is a parabola.
We have a linear equation.
Therefore, the solution to the system of equations will be the points of intersection of both functions.
When graphing both functions we have that the solution is given by:
That is, the line cuts the quadratic function in the following ordered pair:
(x, y) = (1, 2)
Answer:
the solution (s) of the graphed system of equations are:
(x, y) = (1, 2)
See attached image.
Answer: 2.28 %
Step-by-step explanation:
Given : Mean :
Standard deviation :
The formula to calculate the z-score :-
For x = 72
The p-value =
In percent,
Hence, the percentage of pediatricians work more than 72 h per week = 2.28 %