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antiseptic1488 [7]
3 years ago
8

Rosa is participating in a fun run to raise money for the West Side Children's Hospital. The run is held at Rosa's high school t

rack. The more laps Rosa runs around the track, the more money she raises for the hospital.
There is a proportional relationship between the number of laps Rosa runs, x, and the amount of money she raises for the hospital (in dollars), y.
x (laps) y (dollars)
1 $5
2 $10
3 $15
4 $20
Write an equation for the relationship between x and y.
y=
Mathematics
1 answer:
Kaylis [27]3 years ago
5 0

Answer:

y=5x

Step-by-step explanation:

A proportional relation is of the form y=kx

To find k, we put any ordered pair from the table and solve for k.

From the table when x=1, k=5

This implies that:

5=k(1)

We simplify to get;

k=5

We put this back into the equation to get:

y=5x

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That is permuations

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PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
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Answer:

I think the answer is y=23x+3....

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3 years ago
Solve for X and show work
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I don’t know how to show how I got it but the answer is X=12.
7 0
2 years ago
Select all the correct answers.
sukhopar [10]

Answer:

Second point (-5/2, -7/2)

First point (3/2, 17/2)

Step-by-step explanation:

We have two equations, and we want to know at wich poin are equal. Hence, we have a system of equations and the solution is nothing more that the point (x,y) where those functions intercepts.

4x2+ 7x -11=y

3x+4=y

Lets use substitute method

4x2+7x-11=3x+4

This can be re arrange as the following eq:

4x2+4x-15=0

A quadratic equation, its solution can be obtained using the below eq.

x=\frac{-b+/- \sqrt{x^{2}-4ac } }{2a}

where a=4, b=4, c=-15.

Remember, the quadratic equation as a +/- sign, meaning that you will obtain one answer using the + operator and other using the - operator.

By doing the above, we have x=-5/2 and x=3/2

By using x=3/2 in equation of line (3x+4=y)  we have y=17/2

First point (3/2, 17/2)

By using x=-5/2 in equation of line (3x+4=y) we have y= -7/2

Second point (-5/2, -7/2)

Those points are the ones where the line and the parabola intercept.

7 0
3 years ago
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