3 years ago

Slope = 2; 3-intercept=-1

Mathematics

1 answer:

Zinaida [17]3 years ago

7 0

Answer: Slope = 2; 3-intercept=-1

Step-by-step explanation:

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54 students

Step-by-step explanation:

First, change the percent to a decimal.

12% = 0.12

Now, multiply the decimal by the total amount of students to find the amount of students that stay after school.

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Step-by-step explanation:

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Solve using the elimination method:<br> X-3y=7<br> 3x + 3y=9

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Answer:

$x=4\\\\y=-1$

Step-by-step explanation:

Given Equation:

$x-3y=7$ Equation:1

$3x + 3y=9$ Equation:2

Dividing Equation:2 by '3' both the sides:

$x+y=3$

or $x=3-y$ Equation:3

Putting the vale of 'x' in Equation:1

$x-3y=7$

$(3-y)-3y=7\\\\3-y-3y=7\\\\3-4y=7\\\\$

Subtracting '3' both sides

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The solution of the equations is :

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Option A

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