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2 years ago

Roberto buys 15 balls for 300. how much will you pay for 10 balls?

Mathematics

2 answers:

Ludmilka [50]2 years ago

6 0

Answer:

$200 (or whatever the currency is since it is not specified here)

Step-by-step explanation:

We can create a proportion for this

$300/15 balls = $x/10 balls

Cross-multiplication: 15x = 3000

Divide: x = $200

Mice21 [21]2 years ago

4 0

Answer:

200

Step-by-step explanation:

300/15

divide cost by number bought

you will get this number, so for 1 ball you will pay 20

20 x 10

you will take the price for one ball and multiply it by the number of balls you want to buy

200

you will have to pay this number for 10 balls

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Y=5x+2 <br> 4x-y=0<br> is (2,12) a solution of the system?

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Answer:

The point (2,12) is not a solution of the system

see the explanation

Step-by-step explanation:

we have

$y=5x+2$ ----> equation A

$4x-y=0$ ----> equation B

Solve the system by elimination

Adds equation A and equation B

$y=5x+2\\4x-y=0\\------\\y+4x-y=5x+2+0\\4x=5x+2\\5x-4x=-2\\x=-2$

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substitute the value of x in the equation A

$y=5(-2)+2=-8$

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The system has only one solution, because the intersection point both lines is only one point

therefore

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Roberto buys 15 balls for 300. how much will you pay for 10 balls?​

Roberto buys 15 balls for 300. how much will you pay for 10 balls?