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4 years ago

Is (–9, –7) a solution to this system of equations?

Mathematics

1 answer:

aliya0001 [1]4 years ago

6 0

Answer:

(-9, -7)

Step-by-step explanation:

To solve this, i used the elimination method.

17x - 19y = -20

x + y = -16

multiply both sides by -17

and that will give you =

17x - 19y = -20

-17x - 17y =272

then i added the equations.

-36y = 252 (divide both sides by -36)

y = -7

now that you have found the y value, the next step is to find the x value and for that you need to pick an equation and solve it.

x + y = -16

x + (-7) = -16 (replace y with -7)

x = -9

(x,y) = (-9, -7)

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Which expression can be used to approximate the expression below,for all positive number a,b and x where a =/ 1 and b=/ 1

rodikova [14]

Answer:

The correct option is 1.

Step-by-step explanation:

The given expression is

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Using this property, we get

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3 years ago

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

Two pentagons are similar. the area of one of the Pentagon is 9 times that the other. determine the ratio of the length of the c

kolbaska11 [484]

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2 years ago

Solve for m

MakcuM [25]

Answer:

m = 29/48

Step-by-step explanation:

Given that

x₂ = (y₂-y₁) +10 →(1

y₂ = y₁-x₁ → (2

y₁= 37

x₁ = 29

Now substitute the value of x₁ and y₁ into equation 2

y₂ = 37-29

y₂ = 8

Now substitute the value of y₂ and y₁ into equation 1

x₂ = (8-37) +10

x₂ = -19

As we know the slope (m) can be calculated as follows

m =(y₂ - y₁)/(x₂ - x₁)

m = (8- 37)/(-19 - 29)

m = (-29)/(-48)

m = 29/48

So our slope is 29/48

3 0

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