We have the following:

A system of linear equations has infinite solutions when the graphs are exactly the same line.
for this to happen, on both sides the value of x must be equal:

replacing:
Answer: Option A
or
Step-by-step explanation:
Use the quadratic formula to find the zeros of the function.
For a function of the form

The quadratic formula is:

In this case the function is:

So

Then using the quadratic formula we have that:



Remember that 




or
<h2><u>AnswEr :</u> </h2>
The area of the rectangle is of the form 6x² - 9x - 15
Factoring the given expression,

Length of the rectangle is 2x - 5
Thus,

<h3>The breadth of the rectangle is 3x + 3 </h3>
Step-by-step explanation:
He goes 20 miles in total so knowing that you can multiply 20 by 6 which is 120. Then you can add the break on giving you 125 min.
Answer:
x = 10
y = 3
Step-by-step explanation:
Given
2x - 6y = 2
x + 6y = 28
Add both equations
2x + x -6y + 6y = 2 + 28
3x = 30
Divide both sides by 3
x = 30/3
x = 10
Substitute 10 for x in either equations to get y
Using equation 2 , we have
x + 6y = 28
10 + 6y = 28
Subtract 10 from both sides
10 - 10 + 6y = 28 - 10
6y = 18
Divide both sides by by 6
y = 18/6
y = 3
Therefore
x = 10
y = 3