Solve the system using elimination. 3 x plus 3 y equals 27. x minus 3 y equals negative 11.

Answers

Answer 1

Answer:

- 5/4

Step-by-step explanation:

Answer 2

Answer:

x=4 and y=5 commonly notated as (4,5)

Step-by-step explanation:

The equations

Equation 1: 3x+3y=27

Equation 2: x-3y= -11

The second equation looks like it will be the easiest to rearrange.

x-3y = -11

add 3y to each side to get

x = 3y-11

Substitute that in for x in equation 1 so

3x+3y=27

turns into

3(3y-11) +3y =27

multiply out to get

9y-33+3y =27

Condense variables

12y-33=27

add 33 to each side

12y= 60

Divide by 12

y = 5

Plug into one of the original equations (I will be doing both to show it doesn't matter what equation you use, but you only need to use one equation, I personally think it is easier to plug into the second equation)

Equation 1: 3x+3y=27

Plug in what we got for y

3x+3(5)=27

multiply

3x+15=27

subtract 15 from each side

3x=12

divide by 3

x=4

Equation 2: x-3y = -11

Plug in what we got for y

x-3(5) =-11

Multiply

x-15= -11

Add 15 to each side

x=4


Related Questions

The perimeter of a rectangle is 46 inches. If the width of the rectangle is 8 inches, what is the length?

Answers

Answer:

The length is 15 inches

Step-by-step explanation:

Using the formula [tex]P=2(l+w)[/tex], you will do this:

[tex]l=\frac{p}{2} - w = \frac{46}{2} - 8 = 15in[/tex]


Given: AABC-ADEF
Determine the measure of DF

A)3 cm

B)4 cm

C)5 cm

D)6 cm

Answers

The answer is B because those triangles are congruent

help!!!!!!!!!!!!!!!!!!!!!!! Its geometry

Answers

You’re correct, the answer is A :)
The answer is A you were already on it! :)

Which question below is a Statistical Question?
A. How many students have a cell phone?
B. How many months are in a year?
C. How tall are the students in your class?
D. What is for lunch today?

Answers

Answer:

C

Step-by-step explanation:

I chose C because it more detailed than the rest of the question. Everyone already knows how many months are in a year. What is for lunch today is just a normal question. How many students have a cell phone was not really detailed but it would have been different if they said "How many percentage of college students in math class uses cell phones.  

Hope this helps:)

Work out the size of angle x

Answers

80 degrees
it’s like that z thing and the lines are both parallel. so where it’s 100 degrees the opposite is 80 degrees, because it’s a line of 180 degrees. so the line below that is the same. taht made no sense

Find the peremiter of triangle ABC

Answers

Answer:

18

Step-by-step explanation:

if AB : BC : AC is 3 : 4 : 2 and BC = 8 then AB = 6 and AC = 4

To calculate the perimeter of the triangle we add all side lengths up

4 + 6 + 8 = 18

Answer:

Step-by-step explanation:

12

units.

Explanation:

Using the Distance Formula,

A

B

2

=

{

(

5

)

(

2

)

}

2

+

{

(

2

)

(

2

)

}

2

=

9

A

B

=

3

Similarly,

B

C

=

5

,

and

,

A

C

=

4

Hence,

the Perimeter=

A

B

+

B

C

+

A

C

=

12

units.

Answer link

Write an equation that represents the line.

Answers

Answer:

COORDANITE GRID

Step-by-step explanation:

I think y=5/6x I’m sorry if it’s wrong

How do I solve it? Please help...............​

Answers

9514 1404 393

Answer:

  15.08 m

Step-by-step explanation:

You can take the appropriate fraction of the whole circumference, or you can use the arc-length formula. You get the same answer either way.

Angle XZW is 180° -108° = 72°

The circumference is C=πd, so the arc of interest is ...

  XW = C(72°/360°) = πd/5 =π(24 m)/5 = 4.8π m

  XW ≈ 15.08 m

_____

If you use π = 3.14, then your answer will be 15.07 m.

What would you multiply to make the y variable cross out?

-5x + y = -3

3x - 8y = 24

Answers

Answer:

Step-by-step explanation:

-40x + 8y = -24

 3x  -  8y = 24

-37x = 0

x = 0

0 + y = -3

y = -3

(0, -3)

Answer:

I will show you how to solve for x and y.

Step-by-step explanation:

-5x + y = -3

3x - 8y = 24

You can isolate y in the first equation, and substitute that into the second equation.

so to isolate y in -5x + y = -3, you would add 5x to both sides

this gives you y = 5x - 3

Then substitute this y into the equation below.

3x - 8(5x-3) = 24     (this way, the y variable disappears)

then distribute the 8 into the bracket

3x - 40x + 24 = 24

combine the variables

-37x + 24 = 24

isolate x by moving the constants to one side

-37x = 0

so x = 0

I am not sure if you want the rest, but here it is.

substitute x = 0 into one of the equations.

-5x + y = -3

-5(0) + y = -3

y = -3

HELPP PLEASE!!!!!!!!

Answers

Download socratic sis That’ll help you ❤️
12+3i

theres your answer

LMNP is rotated 90° clockwise around the origin.



What are the coordinates of M'?

A. M’(3,-4)
B. M’(-3,-3)
C. M’(-4,3)
D. M’(4,-3)

Answers

Answer:

ITS IS D (4,-3)

Step-by-step explanation:

Ap ex

The coordinates of M is M’(4,-3).

What is rotation?

Rotation means the circular movement of an object around a center. It is possible to rotate different shapes by an angle around the center point.

Given:

LMNP is rotated 90° clockwise around the origin.

If we rotate the figure in LMNP  about 90 degrees then the coordinates will change into

(x, y)  to (y, -x).

As, x= 3, y=4

Hence, the coordinates of M is M’(4,-3).

Learn more about this concept here:

https://brainly.com/question/22851947

#SPJ5



Graph f (.x) = x3 – 4x3 + x2 + 2. Identify the x-intercepts and the points where the local maximums and local
minimums occur. Determine the intervals for which the function is increasing or decreasing. Round to the nearest
hundredth, if necessary.

Answers

After graphing  x⁵ – 4x³ + x² + 2, we have

x-intercepts : x ≈ 2.16, x = 1, x ≈ 1.75

local maximums : (-1.63, 10.47)

local minimums : (1.46, -1.68)

increasing : 1.46 < x < -1.63

decreasing : -1.63 < x < 1.46

What is graphing?

In discrete mathematics, and mοre specifically in graph theοry, a graph is a structure amοunting tο a set οf οbjects in which sοme pairs οf the οbjects are in sοme sense "related". The οbjects cοrrespοnd tο mathematical abstractiοns called vertices (alsο called nοdes οr pοints) and each οf the related pairs οf vertices is called an edge (alsο called link οr line).

Typically, a graph is depicted in diagrammatic fοrm as a set οf dοts οr circles fοr the vertices, jοined by lines οr curves fοr the edges. Graphs are οne οf the οbjects οf study in discrete mathematics.

After graphing  x⁵ – 4x³ + x² + 2, we have

x-intercepts : x ≈ 2.16, x = 1, x ≈ 1.75

local maximums : (-1.63, 10.47)

local minimums : (1.46, -1.68)

increasing : 1.46 < x < -1.63

decreasing : -1.63 < x < 1.46

Learn more about graph

https://brainly.com/question/17267403

#SPJ1

Complete correct question:

Pls help me!!!!

3/4 ton= Ib

Answers

Step-by-step explanation:

2666 and 2/3 ok try thisyeh

Answer:

1,500 lbs.

Step-by-step explanation:

There are 2000 lbs in 1 ton.

[tex]\frac{3}{4}[/tex] × [tex]\frac{2000}{1}[/tex]=     [tex]\frac{6000}{4}[/tex]

6,000 divided by 4 is 1,500

Answer: 1,500 lbs.

help me pls the photo attached is the question quick pls ill give brainliest answer​

Answers

Answer:

12:18 and 20:30

Step-by-step explanation:

Answer:

12:18? n 20:30?

Step-by-step explanation:

sorry if im rong

Will give brainliest

Answers

Answer: y=12 x =9

Step-by-step explanation:

In a parallelogram the diagonals bisect each other making them equal.

this means 2y + 6 = 30

we can rearrange this as 30 - 6 = 2y

24 = 2y  therefore y = 12

3x - 3 = 24

We can rearrange this as 24 + 3 = 3x

3x = 27

27 / 3 = 9

x = 9

Hope this helped :)

Write an algebraic expression for
3 less than m

Answers

Answer:

3 < m

Step-by-step explanation:

< is less than

> is greater than

what is the value of c?

Answers

Answer:

The value of C is 3

Step-by-step explanation:

all of the angles of a triangle add up to 180°. first you would add 92 and 46 and get 138. You then subtract 180 and 138 and get 42. then you divide 42 by 14 and get 3. then substitute 3 back into the equation and you get 180.

1. If you wish to calculate the interest on an investment with an interest rate
of 2.85%, what number will you plug into your equation?"
0.00285
2.85
0.285
ОО
0.0285

Answers

Answer:  Choice D)  0.0285

=========================================

Explanation:

You move the decimal point two spots to the left to go from 2.85% to 0.0285

Or you can think of it like this:

2.85% = (2.85)/100 = 0.0285

since "percent" means "per 100"

Which table corresponds to the equation y = −3x −2?

Answers

Answer:

b

Step-by-step explanation:

I just need the answer for c) pls help :(

Answers

Answer:

Step-by-step explanation:

sorry if its not the best, i don't know how to say the cords sorry. have a good rest of your day or night!

Solving 1 step math equations:
[tex] - 2.5 + w = 3.7[/tex]

Answers

W = 6.2 is the answer

-4a+14+7a-9
will give 88 points in first 10 minutes

Answers

Answer:

3a+5

Step-by-step explanation:

add-4a and 7a

3a+14-9

subtract 9 from 14

3a+5

Answer:

[tex] \sf \: 3a + 5[/tex]

Step-by-step explanation:

Given expression,

→ -4a + 14 + 7a - 9

Let's simplify the expression,

→ -4a + 14 + 7a - 9

→ (-4a + 7a) + (14 - 9)

→ (3a) + (5)

→ 3a + 5

Hence, the answer is 3a + 5.

Which of the following is NOT equivalent to 78 ÷ 6? (72 + 6) ÷ 6 (72 ÷ 6) + (6 ÷ 6) (60 ÷ 6) + (18 ÷ 6) (72 ÷ 6) + 6

Answers

Answer:

(72 divided by 6) + 6

Step-by-step explanation:

78 divided by 6 is 13. The question (72 divided by 6) + 6 does not equal to 13, it equals to 14, therefore (72 divided by 6) + 6 is not equivalent.

Answer:

(72 divided by 6) + 6

Step-by-step explanation:

Will give brainliest!! Please help

Answers

Answer:

2.67m

Step-by-step explanation:

Find the scale factor= 5/3

times 1.6 by 5/3 = 2.67

The sum of 4 consecutive odd integers is 72
Help

Answers

Answer:

Answer: The 4 consecutive odd integers are 15, 17, 19, 21.

Answer:

15 + 17 + 19 + 21= 72

Step-by-step explanation:

hope this helped!

Please Help

write and equation in slope intercept form with the following information. slope = 7, y intercept = -9

Answers

Answer:

y=7×-9 I going to be your answer

Which of the following lists of Triangle side lengths would not be considered a Pythagorean Triple?

A. 5, 12, 13
B. 7, 24, 25
C. 9, 21, 23
D. 12, 35, 37​

Answers

Answer:

c

Step-by-step explanation:

Based on the following expression which math property is being demonstrated: a (b+c) = (ab) + (ac)

Answers

distributive property

Sketch a cylinder with radius 8 feet and height 3 feet, then find the volume.

Answers

Answer: 339.29ft^3

Step-by-step explanation:

The formula for a cylinder is πr^2h

In your scenario, r=8 and h=3 so put those into the equation -

π8^2(3) and just solve!

what is the value of x?

Answers

Answer:

x=5

Step-by-step explanation:

im close to ranking up btw

Answer:

X = 5

Step-by-step explanation:

All angles have to add up to 180°

Hope this helps. Pls give brainliest.

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