5x + 2y = -10
3x + y = 66

please show work

Answers

Answer 1

Answer:

x=142, y=-360. (142, -360).

Step-by-step explanation:

5x+2y=-10

3x+y=66

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

5x+2y=-10

-2(3x+y)=-2*66

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

5x+2y=-10

-6x-2y=-132

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

-x=-142

x=142

3(142)+y=66

426+y=66

y=66-426

y=-360

Answer 2

Answer:

1- 5x+2y+−2y=−10+−2y

5x=−2y−10

[tex]\frac{5}{5}[/tex]= [tex]\frac{-2y-10}{5}[/tex]

x= [tex]\frac{-2}{5}y-2[/tex]

2-  3x+y+−y=66+−y

3x=−y+66

[tex]\frac{3x}{3} = \frac{-y+66}{3}[/tex]

[tex]x=\frac{-1}{3}y+22[/tex]

Step-by-step explanation:

This is the answers :)


Related Questions

whats an"an amount, shared equally with 4 people "

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well if that's in a math problem then its division. Because you are sharing equally.

Please help, thank you.

The question is in the picture

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D.kite

youre welcome hihihi

in an equilateral triangle the sides are 14sqrt7. find the length of the altitude

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Answer:

1

Step-by-step explanation:

3 x minus 2 by 4 minus 2 X + 3 by 3 equals to 2 by 3 minus x find the value of x​

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Answer:

i love math

The ans is in the picture and the steps how i got it

(hope this helps can i plz have brainlist it will make my day :D hehe)

Step-by-step explanation:

Enter the rule used to transform triangle ABC . If there is a dilation, dilate with respect to the origin. The rule used to transform triangle ABC(x,y)

Answers

Answer:

There is a dilation and the scale factor is 4

Step-by-step explanation:

The details that complete the question are:

△ABC

A(2, 5), B(6, 10), C(9, −1)

△A′B′C′

A′(0.5, 1.25), B′(1.5, 2.5), C′(2.25, −0.25)

Checking if there is dilation or not

To do this, we make use of the following scale factor (k) formula:

[tex]k = \frac{Original}{Image}[/tex]

Using A and A'

[tex]k = \frac{A}{A'}[/tex]

[tex]k = \frac{(2,5)}{(0.5,1.25)}[/tex]

Factorize the numerator

[tex]k = \frac{4(0.5,1.25)}{(0.5,1.25)}[/tex]

[tex]k = 4*\frac{(0.5,1.25)}{(0.5,1.25)}[/tex]

[tex]k = 4 * 1[/tex]

[tex]k =4[/tex]

Using B and B'

[tex]k = \frac{B}{B'}[/tex]

[tex]k = \frac{(6,10)}{(1.5, 2.5)}[/tex]

Factorize the numerator

[tex]k = \frac{4(1.5, 2.5)}{(1.5, 2.5)}[/tex]

[tex]k = 4*\frac{(1.5, 2.5)}{(1.5, 2.5)}[/tex]

[tex]k = 4 * 1[/tex]

[tex]k =4[/tex]

Using C and C'

[tex]k = \frac{C}{C'}[/tex]

[tex]k = \frac{(9, -1)}{(2.25, -0.25)}[/tex]

Factorize the numerator

[tex]k = \frac{4(2.25, -0.25)}{(2.25, -0.25)}[/tex]

[tex]k = 4*\frac{(2.25, -0.25)}{(2.25, -0.25)}[/tex]

[tex]k = 4*\frac{(2.25, -0.25)}{(2.25, -0.25)}[/tex]

[tex]k = 4 * 1[/tex]

[tex]k =4[/tex]

The above shows that k is 4 in all cases.

Hence, there is a dilation and the scale factor is 4

Use the graph below to answer the following question.
find the slope.
A. 2
B. –one-half
C. –2
D. one-half

Answers

the slope is -2 so C

{(3,7),(5,9),(6,2),(8,7),(5,11),(4,8)} what are the input, or x-values, of the ordered pairs?

Answers

Answer:

[(3, 4, 5, 6, 8)]  

Step-by-step explanation:

The x-values are the first value of each point

3,4,5,6,8 reason being is because those are the inputs!

Find the perimeter of the trapezoid !!

Answers

Answer:

44

Step-by-step explanation:

12+12+7+(5^2+12^2).

5^2=25

12^2=144

144+25=169

The square root of 169 is 13.

Add all numbers together:

12+12+7+13=44

P=44.

Anyone know this answer? Will give brainliest if correct

Answers

Answer:

use photomath

Step-by-step explanation:

A mechanic is comparing how quickly two kinds of motor oil heat up. He records the change in the temperature (degrees Fahrenheit) of each motor oil over time (minutes) in the same car traveling under the same conditions at the same speed. The graph shows his results for the first motor oil.


The table shows his results for the second motor oil.

image e43bb99419b8473bb60e9585b380f662

What conclusion can the mechanic make about the two kinds of motor oil?

A
The rate of temperature increase for the first motor oil is 0.5°F greater than that of the second motor oil.
B
The rate of temperature increase for the first motor oil is 3°F greater than that of the second motor oil.
C
The rate of temperature increase for the second motor oil is 3°F greater than that of the first motor oil.
D
The rate of temperature increase for the second motor oil is 0.5°F greater than that of the first motor oil.

Answers

Answer: C

Step-by-step explanation:

figure out the questions do all give brainliest

Answers

a)10 hats
c) 1hr
d)2 pieces of pizza
d)3 rows

please help me with this

Answers

Answer: The last option, or D

Step-by-step explanation:

35x−35y+21

A 4-pack of boncy balls costs $1.33. What is the unit price, rounded to the nearest cent?​

Answers

Answer:

$0.33 per ball

Step-by-step explanation:

haha we meet again.

Divide 1.33 by 4

1.33/4=0.3325

Round to the nearest tenth

0.33

(x-7)(2x + 1) = 0

Factoring

Answers

Answer:

x=7,x=-1/2

Step-by-step explanation:

so x-7=0 or 2x+1=0

x=7 or 2x=-1

x=7,x=-1/2

if my answer helps please mark as brainliest.

in the scale drawing what will the length of the West side be? ​

Answers

28 or 8 depending on which part of the drawing you’re referring to

Can someone help me??

Answers

Answer:

(8,8)

Step-by-step explanation:

The first equation says y and x are the same, so any x in the second equation can be replaced with a y, so

y = 2x - 8 and y = x, substituting x for y gives

x = 2x -8, subtract x from each side, add 8 to each side, get

8 = x

substitute that value back into the first equation

y = x, x= 8, so y=8

answer.
Which of the following values
satisfies the inequality 9 < 2x + 7 <15

Answers

Answer:

1<x<4

Step-by-step explanation:

9<2x+7<15

9+−7<2x+7+−7<15+−7(Add -7 to all parts)

2<2x<8

2 /2 < 2x /2 /< 8 /2  (Divide all parts by 2)

1<x<4

After Batman brought the Joker to justice, the crime rate in Arkham City decreased by 12\%12%12, percent. Previously, the crime rate was ccc incidents per 100010001000 people.
Which of the following expressions could represent the crime rate in Arkham City after Batman brought the Joker to justice?

Answers

Answer:

.88c                       22/25c

Step-by-step explanation:

yup

Answer:

.88c                   22/25c

Step-by-step explanation:

...............................

Answers

WX=XY, VX=XZ Given

Angle WXV = Angle YXZ Vertical Angles theorem

Triangle VXW = Triangle YXZ Side angle Side postulate

WVX = YZX because corresponding parts of congruent triangles are congruent

Find an equation of the ellipse that has center (-2,0), a minor axis of length 2, and a vertex at (8,0)

Answers

Answer:

Step-by-step explanation:

(-2,0) and (8,0) are horizontally aligned, so the ellipse is horizontal.

The equation of the ellipse is: [tex](x + 2)^2 / 16 + y^2 = 1.[/tex]To find the equation of the ellipse with the given information, we need to determine the major axis length and the equation's standard form.

The center of the ellipse is (-2, 0), and one vertex is at (8, 0). This means that the major axis is along the x-axis, and its length is equal to the distance between the center and the vertex, which is 8 units.

The minor axis length is given as 2 units. Since the minor axis is perpendicular to the major axis, it corresponds to the y-axis.

The standard form equation of an ellipse with a horizontal major axis is:

[tex]((x - h)^2 / a^2) + ((y - k)^2 / b^2) = 1,[/tex]

where (h, k) represents the center of the ellipse, and a and b are the semi-major and semi-minor axes' lengths, respectively.

Plugging in the given information, we have:

Center: (h, k) = (-2, 0)

Semi-major axis length: a = 8 / 2 = 4

Semi-minor axis length: b = 2 / 2 = 1

Substituting these values into the standard form equation, we get:

[tex]((x + 2)^2 / 4^2) + (y^2 / 1^2) = 1[/tex]

Simplifying:

[tex](x + 2)^2 / 16 + y^2 = 1[/tex]

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3.02 x 10-1 =
A = 30.2

Answers

Answer:

3.02

x 10

-------

000

+302x

______

30.20

-3x + y = -14
x= -2y + 14
Which variable should an expression be substitute for?

Answers

9514 1404 393

Answer:

  x

Step-by-step explanation:

There is already an expression given for x, so that is the easiest variable to substitute for.

Substituting for x using the second equation, you have ...

  -3(-2y+14) +y = -14

  6y -42 +y = -14

  7y = 28

  y = 4

  x = -2(4) +14 = 6

The solution is (x, y) = (6, 4).

_____

Substitution for x is the easiest.

__

The first equation could be rearranged to give an expression for y:

  y = 3x -14

Then that can be used to substitute for y in the second equation. My lazy brain judges that to be more work.

8)
Which equation represents a proportional relationship?
A)y = x/8

B) y=8/x

C) y=x/8 +8

D) y=8/x +8

Answers

Answer:

c

Step-by-step explanation:

c is the best

which line is perpendicular to the line y=2x+3

Answers

Answer:

d

Step-by-step explanation:

b. the x intercept is 3 and b is the only one where the line crosses 3 on the x axis

In the triangle PQR, PQ= 7, QR= 8, and PR= 14. Which is the largest angle?
a.) this cannot be determined
b.) /PRQ
c.) /PQR
d.) /QPR
A N D ! !
Which combination of measurements could form a triangle?
a.) 11m, 21m, 33m
b.) 6m, 9m, 16m
c.) 16m, 24m, 38m
d.) 22m, 28m, 51m

Answers

Answer:

the largest angle=<PQR

c.) 16m, 24m, 38m

The largest angle of the triangle is ∠PQR and the measurements of the triangles are 16m, 24m, 38m

What is a Triangle?

A triangle is a three-sided flat figure or polygon with three angles.

A triangle has three vertices, and the internal angles amount to 180°.

∠A + ∠B + ∠C = 180°

The area of the triangle = ( 1/2 ) x L x B

For a right angle triangle

From the Pythagoras Theorem ,

if a² + b² = c² , it is a right triangle

if a² + b² < c² , it is an obtuse triangle

if a² + b² > c² , it is an acute triangle

Given data ,

Let the triangle be represented as ΔPQR

Now , the measure of side PQ = 7

The measure of side QR = 8

The measure of side PR = 14

Now , for a triangle , the angle opposite the smallest side of a triangle has the smallest measure.

And , the angle opposite the largest side has the largest measure

So , the angle opposite to the side PR = ∠PQR

Therefore , The triangle's largest angle is ∠PQR

Now , the measure of the sides of the triangles are given and

a + b > c

when a = 16 , b = 24 and c = 38

16 + 24 > 38

40 > 38

Therefore , the measures 16m, 24m, 38m form a triangle

Hence , the triangles are solved

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Explain how the parts of the balanced hanger compare to the parts of the equation.



7 = 2x + 3

Answers

Answer:

There are seven squares on the left side and on the right side there is 2 circles and 3 squares i.e. attached to each other

Step-by-step explanation:

The explanation is shown below:

Given that

7 = 2x + 3

There are seven squares on the left side and on the right side there is 2 circles and 3 squares i.e. attached to each other

Kindly see the picture on the attachment area

what's the slope in intercept form pls help me

Answers

Answer:

y=1x+1

Step-by-step explanation:

Find the value of x in the parallelism. Please respond ASAP

Answers

Answer:

60=x+23(opposite angle of parallelogram are equal)

60-23=x

x=37 is answer.

Classify the angle whose measure is 34°

Answers

Answer:

Acute angle

Step-by-step explanation:

Answer:

34° angle is an acute angle

A movie theater seating is arranged with 15 seats in the front row, 14 seats in the middle row, and 26 seats in the back row. The ticket-taker randomly assigns seats to people as they enter the theater. What is the probability that the first person who enters the theater will be assigned a seat in the front row? Ratio Answer in simplest form.

Answers

Answer:

3/11

Step-by-step explanation:

i did this question it 3/11

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