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djyliett [7]
3 years ago
14

Which order pair is a solution to the system of linear equations -4+y=8 and x-5y=17?

Mathematics
2 answers:
nata0808 [166]3 years ago
7 0

Answer:

(77,12)

Step-by-step explanation:

-4+y=8

x-5y=17

We need to solve for x  and y

USe substitution method, we solve the first equation for y

-4+y=8 , add 4 on both sides to get y alone

y=12

Now we plug in 12 for y in the second equation and find out x

x-5y=17

x-5(12)=17

x-60=17

Add 60 on both sides

x= 77

The ordered pair is (x,y). our x=77 and y=12

So ordered pair is (77,12)

andreev551 [17]3 years ago
4 0

Hello!

To find this ordered pair, we solve for x and y and put them together in an ordered pair.

-4+y=8

x-5y=17

Let's solve the first equation for y.

y= 12

Now, let's plug 12 into the second equation for y.

x-5(12)=17

x-60=17

x=77

Therefore, our ordered pair is (77,12)

I hope this helps!

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Which function has zeros at x=-2 and x=5?
Licemer1 [7]

Answer:

x^{2} - 3x - 10

Step-by-step explanation:

To start, lets form our polynomial factors from our zeroes.

x = -2

x + 2 = 0

x = 5

x - 5 = 0

Now lets put these into factored form by moving them into parenthesis and multiplying them with each other!

(x+2)(x-5)

We can start moving them out! I am going to use FOIL, but you could also use distributive or any other method/property.

x · x = x²

x · -5 = -5x

x · 2 = 2x

2 · 5 = 10

Now lets put our terms into our polynomial function, based on the order of the powers.

x^{2} - 3x - 10

We are done! Hope this helps!

7 0
3 years ago
The coordinates of triangle FGH are F(2, 4), G(5, −9) and H(−3, −4). Which statement proves that triangle FGH is a right triangl
notsponge [240]
We know that

A right triangle has the two legs that form an angle of 90°, which means that the two legs are perpendicular.

In order to prove that FGH is a right triangle, you need to calculate the slopes of the lines passing through its vertexes and see if there is a pair of opposite reciprocals:
m = (y₂ - y₁) / (x₂ - x₁)

m(FG) = (-9 - 4) / (5 - 2) = -13/3
m(FH) = (-4 - 4) / (-3 - 2) = 8/5
m(HG) = (-4 -(-9)) / (-3 - 5) = -5/8
Since m(FH) and m(HG) are opposite reciprocals, FH is perpendicuar to HG and FGH is a right triangle.
4 0
3 years ago
Read 2 more answers
Which of the following is NOT true about the given equation: x = 4? Question 10 options:
Ilya [14]

Answer:

a

Step-by-step explanation:

the line with equation x = 4 is the equation of a vertical line parallel to the y- axis. Not a horizontal line




7 0
3 years ago
Which of the following is equivalent to 7-2(x + 2) <-4 - 3(1 - x)?
puteri [66]

Answer:

2 < x

Step-by-step explanation:

7-2(x + 2) <-4 - 3(1 - x)

Distribute

7 - 2x-4 < -4 -3 +3x

Combine like terms

3 -2x < -7+3x

Add 2x to each side

3 -2x+2x< -7+3x+2x

3 < -7+5x

Add 7 to each side

3+7 < -7+7+5x

10 < 5x

Divide each side by 5

10/ 5 < 5x/5

2 < x

4 0
3 years ago
Solve using system of elimination. -x-10y=5 -x-10y=9​
Yanka [14]

Answer:

No Solution.

Step-by-step explanation:

-x-10y=5

-x-10y=9

--------------

-x-10y=5

-(-x-10y)=-9

------------------

-x-10y=5

x+10y=-9

----------------

0=-4

no solution

8 0
3 years ago
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