Solve x-5y=17 for y?

Mathematics

1 answer:

damaskus [11]4 years ago

6 0

Answer:

Y = 12.

Explanation: Because 17- 5 is 12 and when you are doing problems like that, you are supposed to subtract the number behing the equal sign with the number in front of the equal sign. So, that would be 17- 5. And that gives you 12. So, Y=12.

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lin is mixing orange paint for a play. the color takes 3 parts red to 2 parts yellow. if lin has 18 cups of yellow paint how man

4vir4ik [10]

the number of cups of red Lin needs is 27 cups

Explanation:

number of parts of red = 3

number of parts of yellow = 2

the ratio of red to yellow = 3:2

when lin's number of cups of yellow = 18

let the number of cups of red = x

3 red = 2 yellow

x red = 18 yellow

cross multiply:

3(18) = 2(x)

54 = 2x

divide both sides by 2:

54/2 = 2x/2

x = 27

Hence, the number of cups of red Lin needs is 27 cups

7 0

2 years ago

Use the discriminant to determine the nature of the roots of the following equation. y^2 - 5y - 3 = 0

iris [78.8K]

Here a=1, b= -5 and c= -3

so the discrim. is b^2 - 4(a)(c), or (-5)^2 - 4(1)(-3) = 25 + 12 = 37.

Because the discrim. is +, you'll have 2 real, unequal roots.

6 0

3 years ago

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lesantik [10]

Answer:

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