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3 years ago

How would I solve the system 9x +y = 2, -4x -y =-17 when using elimination

Mathematics

1 answer:

larisa [96]3 years ago

7 0

Answer: y=29, x=-3

Step-by-step explanation:

eq. 1: 9x+y=2

9 • -3+y=2

-27+y=2

y=29

eq. 2: -4x-y=-17

4x+y=17

5x=-15

x=-3

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Answer:

The slope of the line would be -3/2.

Step-by-step explanation:

Let's get this equation into the proper slope form:

2x - 3y - 5 = 0

2x - 3y + 3y - 5 = 0 + 3y

2x - 5 = 3y

(1/3)(2x - 5) = 3y * 1/3

2/3x - 5/3 = y

Since the slope is 2/3, we need to find the negative reciprocal of that number, which is -3/2.

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4 years ago

Please give answer of 6 number

Irina18 [472]

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$7,500$

Step-by-step explanation:

Let's solve this problem step-by-step. The library had 1,500 books in 2011. The ratio of books in 2011 and in 2012 is 1:2. Therefore, let the number of books in 2012 be $x$ .

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<h2>Hello!</h2>

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