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3 years ago

Determine which of the following ordered pairs satisfies the given system of equations.

Mathematics

1 answer:

alekssr [168]3 years ago

8 0

Answer:

(-3,2)

Step-by-step explanation:

1) -2x+y=8

you need to leave the Y alone on one side. Then, the term -2x goes to the other side with its opposite sign which is +.

y=8+2x

2) y=2x/(5-8)

3) 8+2x=2x/(5-8)

now, you need the x value. for that, you need to leave x alone on one side.

8+2x=2x/(-3)

8+2x=-(2/3)x

8=-(2/3)x-2x

8=-(8/3)x

8/-(8/3)=x

-3=x

4) you now have the x value. you need the y value. for that, replace the x in one of the given equations. let´s use the 1st equation.

-2x+y=8

y=8+2x

y=8+2*(-3)

y=2

result:

x= -3

y=2

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3 years ago

At the school play abby handed out 250 programs and kim handed out 300 what is the ratio of the number of programs abby handed o

photoshop1234 [79]

A ratio shows us the number of times a number contains another number. The ratio of the number of programs Abby handed out to the number programs Kim handed out is 5/6.

<h3>What is a Ratio?</h3>

A ratio shows us the number of times a number contains another number.

At the school play Abby handed out 250 programs and Kim handed out 300. Therefore, the ratio of the number of programs Abby handed out to the number programs Kim handed out is,

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Learn more about Ratios:

brainly.com/question/1504221

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2 years ago

Evaluate the following.<br> 5 + 3x5-16 + 4

shtirl [24]

Answer:

Step-by-step explanation:

Order of operations

Look below

7 0

3 years ago

Read 2 more answers

Help me with this yes im lazy 2 pages thats it.

valentinak56 [21]

Answer:

2.) $\frac{1}{4}/3=\frac{1}{4}*\frac{1}{3}=\frac{1}{12}$ s yes she is correct

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4.)C $\frac{1}{5}/2= \frac{2}{5}$ ,D $\frac{1}{12}/5=\frac{1}{60}$ ,E

6.) $\frac{1}{8}/3=\frac{1}{24}$

Step-by-step explanation:

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5 0

3 years ago

Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Check all that apply.

DIA [1.3K]

Reta a:

$3x-4y=7 \\ -4y=-3x+7 \\ 4y=3x-7 \\ y= \frac{3}{4}x- \frac{7}{4}$

reta x:

$y=ax+b$

Retas paralelas possuem coeficientes angulares iguais ⇒ mₐ=mₓ

$y= \frac{3}{4}x+b$

(-4,-2)

$\frac{3}{4}.(-4)+b=-2 \\ -3+b=-2 \\ b=-2+3 \\ b=1$

∴ y=3/4x+1

8 0

3 years ago