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2 answers:
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Answer:
16 minutes
Step-by-step explanation:
Given
Represent minutes with M and Phone calls with P.
When M = 8; P = 2
Required
Determine M when P = 4
First, we need to determine the constant of proportion using:
Where k represents the constant:
Divide through by 2
Solving for M, when P = 4
Substitute 4 for P and 4 for k in
Hence:
She spent 16 minutes in total
The zero of the function y = 2x - 5 is x = 5
<h3>What are linear equations?</h3>Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient
<h3 /><h3>How to determine the solution to the system?</h3>A system of linear equations is a collection of at least two linear equations.
In this case, the equation is given as
y = 2x - 5
Next, we plot the above equation.
From the graph of the equation, we can see that the graph crosses the y-axis at 5
This represents the zero of the function
Hence, the zero of the function y = 2x - 5 is x = 5
Read more about linear equations at:
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