Mathematics: Anyone know how to answer this question

Anyone know how to answer this question - id12908532, valleriieZ7002

naomirice24

29.04.2021

x²+y²=225

Step-by-step explanation:

when centered at the origin the equation of a circle is x²+y²=r²

we are given x and y so 9²+12²=r²

$r^{2} =9^{2} +12^{2}\\ =81+144\\ =225$

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Amrinderkhattra

13.02.2020

The system of equations is

x+y=15

19x+8y=164

Step-by-step explanation:

Let

x------> the number of videos of new releases

y-----> the number of classics videos

we know that

x+y=15 ------> equation A

19x+8y=164 ------> equation B

Using a graphing tool

Solve the system of equations

Remember that the solution of the system of equations is the intersection point both graphs

The intersection point is (4,11)

see the attached figure

therefore

the number of videos of new releases is

the number of classics videos is

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