Mathematics High School

Solve the system of equations - 8x - 5y = -13 and - 4x – 5y = 11 by
combining the equations.

Answers

Answer 1

Answer:

(6,-7)

Step-by-step explanation:

subtract them:

-8x - 5y = -13

-4x - 5y = 11

you get

-4x = -24

so x = 6

plug x into the second equation:

-24 - 5y = 11

-5y = 35

y = -7

so your solution is (6,-7).

Answer 2

Answer:

Your solution is (6, -7).

Step-by-step explanation:

Combining the equations is also known as substitution. This is done when you substitute one variable into another equation.

-8x - 5y = -13

-4x - 5y = 11

Let's change the second equation into one with one variable on each side.

-5y = 4x + 11

y = -4/5x - 11/5

Now, plug this into your first equation.

-8x - 5(-4/5x - 11/5) = -13

Distribute the -5 sign.

-8x + 4x + 11 = -13

Combine the like terms.

-4x + 11 = -13

-4x = -24

Isolate x by dividing both sides by -4.

x = -24/-4

x = 6

Now plug this back into either equation.

y = -4/5(6) - 11/5

Multiply.

y = -24/5 - 11/5

Subtract.

y = -35/5

Simplify.

y = -7

Your solution is (6, -7).

Check this by plugging in these values into the equation you have not checked yet.

-8(6) - 5(-7) = -13

-48 + 35 = -13

-13 = -13

Your solution is correct.

Hope this helps!

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Answers

Answer:

D. y <= -x+2

Step-by-step explanation:

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Rosemarie made a necklace from materials that cost $30. She is going to sell the necklace to Betty at 390% of this cost. About how much should Betty pay for the necklace?
А
$12,000
B
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Answers

The anger to how much will Rosemarie sell the necklace for is c $120

Answer: 12

Step-by-step explanation:

what percent of 100 is 24

Answers

Answer:

your answer should be 24%

Step-by-step explanation:

Hope this helps :)

%24

24 / 100 Answer: 24%

:) Have a beautiful day! <3

What is the next fraction in this sequence? Simplify your answer.
5 /6,5/12, 5/24, 5/48...
Submit

Answers

The answer is 5/96.
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What is -9 x (-3) ????

Answers

Answer:

the answer is 27

Step-by-step explanation:

Since both intergers are negative, two negative intergers multiplied equal a positive answer. after wards just multiply 9 and 7 together. I hope this helped.

Ariel swims 2 1/6 miles in every 1/3 hour.Enter the number of miles Ariel swims in 1 hour.

Answers

Answer:

6.5 miles

Step-by-step explanation:

If she travels 2 1/6 in 1/3 hours you would simply multiply by 3 because she would need to travel 2 1/6 miles three times in order for an hour to pass.

List all the factors of 42.

Answers

Answer:

1, 2, 3, 6, 7, 14, 21, 42

Step-by-step explanation:

I don't think that I need to explain this OvO

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Answers

Answer:

its a estamite just guess

Step-by-step explanation:

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If 12m of carpet costs €516, find the cost of 16m

Answers

Step-by-step explanation:

Cost of 12m carpet = €516

cost of 1 m carpet = €516/ 12 = € 43

Now

cost of 16m carpet = € 43 * 16 = € 688

[tex]hope \: it \will \: help \: u[/tex]

Divide 516 by 12 then multiply by 16

Evaluate 1/3r + 11/18 When r = 1/6

Answers

Answer:

1/3(1/6) + 11/18 = 1/18 + 11/18 = 12/18 or 2/3

Step-by-step explanation:

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. Ralph charges $34 for every 4 hours of work that he does. Who charges less?
They charge the same amount.
Ralph
Jalen

Answers

25.50/3= 8.50
34/4= 8.50

They charge the same. $8.50 an hour

Answer:

They charge the same

Step-by-step explanation:

i hope this helps

A shoe store uses a 50​% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a wholesale cost of ​$59​?

Answers

Answer:

          $88.5

Step-by-step explanation:

[tex]59+50\%\times59=59+0.5\times59=59+29.5=88.5[/tex]

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Answers

Answer:

6 - 3p

Step-by-step explanation:

The word "product" indicates to multiply 3 and p, and "subtracted from" tells us to use subtraction.

Answer:

the sum of 6 6 66 and the product of 3 3 33 and d d dd".

Step-by-step explanation:

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Step by step plsss

Answers

Answer:

213

Step-by-step explanation:

Answer:

212.5

Step-by-step explanation:

250*.85 = 212.5

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Answers

Answer:

you are right, 36°

Step-by-step explanation:

angles add up to 180

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1.33
a.
b. -7
c.
d. 4
e. O
f. -1.63

Answers

Answer:

A and 1.33 and -1.63

Step-by-step explanation:

A integer is a whole number, it's either positive or negative.

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Answers

Answer:

16

Step-by-step explanation:

Giving Away 100 Points!!! ONLY IF YOU ANSWER THIS SPECIFIC QUESTION.
WHAT IS 9×24+42

Answers

Answer:

258

Step-by-step explanation:

9×24+42= 258

Simple: 258

And thanks for asking this questions with 100 points.

What is the value of y?
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Answers

Answer:

Step-by-step explanation:

its 165

Find the percent of decrease from 22 songs to 12 songs. Round to the nearest tenth of a percent if necessary.

Answers

Answer:

I am pretty sure the answer is 45%

help please!! solve for x

Answers

im kinda bad at explaining, but basically what you have to do is find the angle to the right of the 50° angle. since theres an equilateral triangle, 180-50-90= 40. since the triangle x is in has 2 equal sides, 2 of the angles are 40. so, 180-40-40=100. sorry if that's off

HELP HELP HELPP MEEEE

Answers

Answer:

5

Step-by-step explanation:

perimiter of rectangle is 3+7+7+3 = 20

square x+x+x+x=20

4x=20

x=20/4

x=5

Answer:5

Step-by-step explanation:

The perimeter of the rectangle is 20 because 7x2+3x2=20

And 20/4(sides of a square) =5

Please help this is dew in 20 minutes

Answers

Answer:

It would be A.

You can trust me because a right angle is 90 degrees, so you would add the two angles.

Answer:

A

Step-by-step explanation:

A card is in the shape of a rectangle. The length of the card is 7 cm
and the area of the card is 35 sq cm. What is the width of the card in
centimeters?

Answers

lol ok so

7*something or you can make it into a variable x=35

7*x=35

/7     /7

x=5.

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I need help please

Answers

hope this helps you out !!

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

1904.60

Step-by-step explanation:

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Fv?

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Answers

Answer:

-68

Step-by-step explanation:

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Noah is planning his birthday party. He is deciding between three themes: space, safari, and comics. He also has to determine where he wants his party, at a skating rink or a park. Lastly, he needs to pick the day of the week that the party will happen. His options are Friday, Saturday, or Sunday. How many different possible party outcomes does Noah have with all of these options? solve 1 2 3 4 5 by this math problem

Answers

Answer:

the answer is 18.l hope is good

Answer:18

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