solve the system of equations X-Y = -12 and -8x-4y=-12 by combining the equations

Answers

Answer 1

Answer:

x = -3

y = 9

Step-by-step explanation:

you can add the equations after multiplying the first one by 8

8x - 8y = -96  added to -8x - 4y = -96

'x' eliminated;  -12y = -108;  y = 9

Solve for 'x':

x - 9 = -12

x = -12 + 9

x = -3


Related Questions

Jenny is getting ready to go see "Black Christmas" with her friends and is trying to decide what to wear. She has 3 shirts : 1 blue, 1 purple and 1 red. She can also wear jeans or a skirt and she can wear boots or flats. How many different outfits can

Help me please also put step by step please.​

Answers

Answer:

2 outfits.

Step-by-step explanation:

Answer:

12 different outfits

Step-by-step explanation:

3 shirts

jeans or skirt: 2 choices

boots or flats: 2 choices

If you have several thing you can do and each one has a number of choices, the total number of variations is the product of the numbers of choices.

3 * 2 * 2 = 12

Answer: 12 different outfits

40 points!!!
PLEASE HELP I NEED IT RN!!​

Answers

Answer:

parallel lines never  intersect

perpendicular  lines intersect at a right angle

Step-by-step explanation:

Getaway Travel Agency surveyed a random sample of 454545 of their clients about their vacation plans. Of the clients surveyed, 212121 expected that they would go on 333 vacations in the next year. There are 516516516 Getaway Travel Agency clients. Based on the data, what is the most reasonable estimate for the number of Getaway Travel Agency clients who expect to go on 333 vacations in the next year? Choose 1 answer: Choose 1 answer: (Choice A) A 454545 (Choice B) B 241241241 (Choice C) C 275275275 (Choice D) D 467467

Answers

Answer:

A 454545 is the correct answer

Answer:

its 241

Step-by-step explanation:

i did it on khan

The equation y = 40x shows the number
of words Diego types in x minutes. What is
the constant of proportionality?

Answers

Answer:

40

Step-by-step explanation:

i would say 40? because it will be a constant for how many times you do X. for example if it's Y = 40 (2) it would equal 80 because no matter what number you put in X 40 will have to be multiplied

Please help ! !!!!!!!!

Answers

Answer:

c, 50

Step-by-step explanation:

120-24= 96

Since we are measuring the size of one of the halves, you have to split that number in half, so 96 ÷ 2= 48.

48 rounds up to 50, so 50 is the answer

You and 3 friends decided to share a pizza. If everyone got 2 pieces each, how many total pieces of pizza were there to begin with?

Answers

Answer:

8

Step-by-step explanation:

dhdhdhdhdhdhdhddijd

Answer:

6 pieces of pizza was started with

Can anyone tell me theorem of Parallelogram*#​

Answers

Answer:

Theorem 1: In a parallelogram, the opposite sides are of equal length. Theorem 2: If the opposite sides in a quadrilateral are the same length, then the figure is a parallelogram. Theorem 3: A quadrilateral is a parallelogram if and only if the diagonals bisect each other.

Step-by-step explanation:

Hope this helps!!!

i suck at math sadly i wish i could

PLEASE HELP ITS DUE SOON! 40 points and i'll mark you as brainliest!! Also explain how you got the answer!!!

Answers

Answer: 6, 4.5

Step-by-step explanation:

which linear function represent the table?​

Answers

Answer:

Step-by-step explanation:So, if the graph is a straight line, it is the graph of a linear function. From a table, you can verify a linear function by examining the x and y values. The rate of change for y with respect to x remains constant for a linear function. This rate of change is called the slope.Mar 9, 2011

What are you guys getting for x-Mas

im getting skateboards

Answers

iPad and a Macbook and etc..

Please help me due tomorrow morning

Answers

Answer: Y=-5

Step-by-step explanation:

The reason is because if you look down the y axis from the origin you can see the location where the line crosses over the y axis in this case it was at (0,-5)

Write the number three hundred sixty-five ten thousandths

Answers

Answer:

365,000

Step-by-step explanation:

Three hundred sixty five ten thousands means 3 hundred and 65 thousands

The number will be written in figures as 365,000

The hundred defines the 300 and the sixty-five ten thousands define 65,000

ten thousands is added in the number to define the nature of sixty-five.

simplfy -3+7 ooooooooooooooooooooooooooooooooooooooooooooooooo

Answers

Answer:

Add -3 and 7. 4

Step-by-step explanation:

Uh ur welcome

Answer:

4

Step-by-step explanation:

I do it this way whenever there is a  - and a - I just add them but add negative sign. IF like in this problem - and a + I subtract...

Hope this helps :3

I will give u brainliest please help

Answers

Answer:  Pablo: 1:5 Sam: 16.50

Step by Step Explination:

How many extraneous solutions does the equation below have?

fraction numerator 2 m over denominator 2 m plus 3 end fraction minus fraction numerator 2 m over denominator 2 m minus 3 end fraction equals 1

Answers

Answer:

Two extraneous solutions

Step-by-step explanation:

Solve the system of equations - x - y = 6 and 5x -7y=66 by combining the equations

Answers

Answer: Let's solve for x.

−x−y=6

Step 1: Add y to both sides.

−x−y+y=6+y

−x=y+6

Step 2: Divide both sides by -1.

−x

−1

=

y+6

−1

x=−y−6

Answer:

x=−y−6

Let's solve for x.

5x−7y=66

Step 1: Add 7y to both sides.

5x−7y+7y=66+7y

5x=7y+66

Step 2: Divide both sides by 5.

5x

5

=

7y+66

5

x=

7

5

y+

66

5

Answer:

x=

7

5

y+

66

5

Step-by-step explanation:

Conversion Measurement *
(10 Points)
Mario drew a line on the wall to measure his
height, but the measuring tape he used was
marked only in metric units. If he measured his
height to be 127.5 centimeters, how tall is
Mario in feet and inches?
(1 centimeter = 0.4 inch)
51 feet
5 feet 1 inch

Answers

Answer:

The answer is 4 feet and 3 inches.

Step-by-step explanation:

Need help once again
Question is in the screenshot
No spam and no useless answers for the points

Please show your work

It means a lot to me :)

Answers

Hi there!

[tex]\large\boxed{\text{ She is incorrect.}}[/tex]

The format of a logarithmic equation is:

[tex]a^{b} = c\\\\log_{a}c = b[/tex]

In this instance:

a = e

b = 3x

c = 7

Rewrite as the logarithmic equation:

[tex]log_{e}7 = 3x[/tex]

Solve. Evaluate [tex]log_{e}7[/tex] and use algebra to find x:

[tex]1.946 = 3x\\\\x = 0.649[/tex]

im so lost could you please help me​

Answers

I think you will use the equation Ax+By=C, I am not quite sure though

Answer:

hosta = 2 $,,, geranium = 5 $

Step-by-step explanation:

if we make two eq.

1) .... 54 = 2h + 10g

2) ...... 40 = 10h + 5g

if we multiply 1st by -5 it turns to

3) ..... -270 = -10h - 50g

cancel both 10h

add eq. .. becomes : -230 = -46g

g = 5

substitute in any find , that h = 2

Will mark brainliest plz help

Answers

Answer:

AE = 30

GD = 5

GF = 10

Step-by-step explanation:

Centroid of medians divide median in the ratio 2 : 1

Therefore,

AG : GE : 2 : 1

Let AG = 2x & GE = x

Since, AG = 20....(given)

Therefore, 2x = 20

x = 20/2

x = 10

GE = x = 10

AE = AG + GE = 20 + 10 = 30

CG : GD : 2 : 1

Let CG = 2x & GD = x

Since, CG = 10....(given)

Therefore, 2x = 10

x = 10/2

x = 5

Since, GD = x

Therefore, GD = 5

BF = 30

2x + x = 30

3x = 30

x = 30/3

x = 10

GF = 10

Does anyone know the answer

Answers

Answer:

the answer is d

Step-by-step explanation:

For 55 you times the average by the time it took and you get 55 same with kick 2 so kick 3 would be 2 seconds because 15 times 2 is 30

the answer is d sorry if i am late !

What is the answer to 1/4x=2?

Answers

Answer: x=8

Step-by-step explanation: Solve for the x by simplifying both sides of the equation, then isolate the variable.

I hope this help you out!

You finish

3/8 of the project. Your friend finishes 1/4 of the project. What

fraction of the project is finished?

Answers

Answer: 5/8 of the project is done

Find all possible values of b such that 4x^2+bx+3 can be factored?

Answers

Answer:13,7,8 but if there’s an answer choice go with 7,8

Step-by-step explanation: Assuming b is an integer, we first look at factors of 4, being 1 and 4 or 2 and 2. The factors of 3 are 1 and 3 only. So the factorisation possibilities are (x+3)(4x+1), (4x+3)(x+1) and (2x+1)(2x+3).

Expanding these we get: 4x²+13x+3, 4x²+7x+3 and 4x²+8x+3, giving values of b=13, 7 and 8

The possible values of b in the given polynomial are 7, 8 or 13.

What is a polynomial?

In mathematics, a polynomial is an expression consisting of indeterminates (also called variables) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer powers of variables.

Given is a polynomial, 4x²+bx+3, we need to find all possible values of b such that 4x²+bx+3 can be factored.

4x²+bx+3

4×3=2×2×3

2×2×3 = 2×6 and 2+6 = 8

2×2×3 = 4×3 and 4+3 = 7

2×2×3 = 12×1 and 12+1 = 13

b=7, b=8, and b=13

4x²+7x+3 = (4x+3) (x+1)

4x²+8x+3 = (2x+1) (2x+3)

4x²+13x+3 = (4x+1) (x+3)

Hence, the possible values of b in the given polynomial are 7, 8 or 13.

Learn more about polynomial click;

https://brainly.com/question/11536910

#SPJ2

Maria earns $40 washing 5 cars. At this rate, how much does Maria earn washing 6 cars?​

Answers

Answer:

$240

Step-by-step explanation:

40 x 5 = 200

40 x 6 = 240                  (basically just adding forty dollars)

find da surface area plz i will give brainlest to best anwser an thanks

Answers

Answer:

multiply all of it

Step-by-step explanation:

11.3 x 6 x 8 x 8

10.3 x 13 x 9 x 5

=

26145849.6

Reduce

For the first one:
227.8
For the second one:
360.9

What is the slope of the line?

Answers

Answer:

[tex]m=\frac{1}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (2, -1)

Point (-4, -3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]:                     [tex]m=\frac{-3+1}{-4-2}[/tex]Add/Subtract:                       [tex]m=\frac{-2}{-6}[/tex]Simplify:                                [tex]m=\frac{1}{3}[/tex]

4 water tanks can hold a total of 432.4 gallons of water. On average,
how much water can each tank hold?

Answers

Answer: 108.1 g

Step-by-step explanation:

432.4/4 = 108.1

Answer:

. umm whats the question

Step-by-step explanation:

help please just look at the picture it has the question and answer choices

Answers

C is ur answer............

Find the length and width of the frame

Answers

Answer:

The width is - 4 the lengeth is - 7

Step-by-step explanation:

w*l = 28in²

w = ?

l = w+3

w=2

2+3 = 5

5*2 = 10

w = 3

3+3 = 6

6*3 = 18

w = 4

4+3 = 7

7*4 = 28

So,

W = 4 L = 7

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