how do you solve 8x-3y=-70 and -2x+5y=-8 using the elimination method please show work.

Answers

Answer 1

Answer:

6x+2y=-78

Step-by-step explanation:

8x-3y=-70

-2x+5y=-8

6x+2y=-78

Answer 2

Answer:

(-11, -6).

Step-by-step explanation:

8x-3y=-70

-2x+5y=-8     Multiply this equation by 4:

-8x+20y=-32

Now add this last equation to the first equation:

17y = -102   - we see that we have eliminated x.

y = -102/17

= -6.

Now plug y=-6 in the first equation to get x:

8x-3(-6)=-70

8x =-70 -18

8x =-88

x = -11.


Related Questions

can some one help me it's not that hard please i just need help​

Answers

Answer:

6

Step-by-step explanation:

20 * $0.25 + 12 * $0.10 = $6.20

$6.20/$1.00 = 6.2 or 6 ice cream cones

Mark brainliest if this helped

Mark brainliest if this helped

What is the rule for the reflection?
ry-axis(x, y) – (-x, y)
ry-axis (x, y) - (4, -y)
rx-axis (x, y) - (-x, y)
rx-axis (x, y) - (x; -y)

Answers

Answer:

Step-by-step explanation:

it’s the last one

Answer:

D

Step-by-step explanation:

right on edge 2022

Luke earned a grade of 73% on his multiple choice history final that had a total of 200 problems. How many problems on the final exam did Luke answer correctly?

Answers

Answer:

146 answers correctly

Step-by-step explanation:

Answer:

He answered 146 questions correctly.

Step-by-step explanation:

This is because 73% of 200 is 146.

The maximum height reached by the barnacle is _______ m.

Answers

Answer:

1 answer is 1

2 answer is -1

3rd answer is 2pi

From the diagram, we can tell that the maximum height that is reached by the barnacle is 1m.

Why is this the maximum height?

The Barnacle is going around the water level in the shape of a circle which the water level being the diameter.

This means that the maximum height the barnacle can reach is constricted by the radius such that it is the same as the radius of the circle. This means that the maximum height is 1m.

Find out more on the height of the barnacle at https://brainly.com/question/10417429.

th
15. There is a two-digit number such that the sum of its digits is 6 while the
of the original number. Find this number.
product of the digits is 1/3 of the original number. Find this number

Answers

Answer:

15

Step-by-step explanation:

"There is a two-digit number such that the sum of its digits is 6"

The digits can be

0, 6   possible numbers: 06, 60

1, 5    possible numbers: 15, 51

2, 3    possible numbers: 23, 32

3, 3     possible numbers: 33

"the product of the digits is 1/3 of the original number"

That means we need a number that is 3 times the product of the digits.

0, 6   product of the digits: 0     3 times product: 0

1, 5    product of the digits: 5     3 times product: 15

2, 3    product of the digits: 6     3 times product: 18

3, 3     product of the digits: 9     3 times product: 27

The only number that appears with both conditions is 15.

Answer: 15

Order these numbers from least to greatest. 9.207, 9.4, 9.2712, 9.27​

Answers

Answer:

9.207, 9.27​, 9.2712, 9.4

Step-by-step explanation:

4. Write an expression that shows three-fourths of v subtracted from 6 times two-ninths y
HELPPPP FASTTT

Answers

Step-by-step explanation:

8

the plural form of radius is radii true or false​

Answers

the answer for this is true

Answer:

the anwer is true                                                                                                       Step-by-step explanation:

The plural of the word 'radius' is actually 'radii

i learned it and welcome and im happy to help u (: :)

Write an equation that represents the distance d and Miles traveled by the monarch butterfly and t days

Answers

Complete question :

When the monarch butterfly is migrating to the south, it has an average speed of 80 miles per day. Write an equation that shows the realtionship between the number of days (t) and the distance (in miles) it has traveled (d)

Answer:

d = 80t

Step-by-step explanation:

Given :

Average speed = 80 miles per hour

Distance traveled (in miles) = d

Number of days = t

Equation which shows the Relationship between Number of days and distance traveled :

Recall :

Speed = distance / time

Speed = 80 ; distance = d ; time = t

80 = d/t

80 * t = d

d = 80t

After eight games the team has won two games lost five and tied one if there season is 24 games how many games will they win at this rate

Answers

probably around 13 games

4. A cylindrical can has a
radius of 5.5 cm and a height
of 8 cm. What is the capacity
of the can?

Answers

Answer:

760.27 cm squared is the capacity

please help me with this math problem, the question is on the picture that i attached, ill mark brainliest if the answer is correct. NO links!

Answers

Answer:

tan ? = oop/adj

tan ? = 14/26

tan ? = 0.538

arctan tan? = arctan 0.538

? = 28°

solve this equation 2b + 8 - 5b + 3 = 13 + 8b - 5

Answers

Answer:

3/11

Step-by-step explanation:

What is the 15th term of the linear sequence below?
22
,
18
,
14
,
10
,
6
,
.
.
.

Answers

Djjddjjdjddjjffjjffjjffjfjjfjffjnff

WILL MARK BRAINLIEST!!
In a survey conducted at a pet store, 150 customers were asked if they owned
birds or fish. The survey data are shown in the relative frequency table.
Own a bird
Do not own a
bird
Total
Own fish
0.04
0.08
0.02
0.86
Do not own fish
Total
What percentage of the people surveyed own a bird?

Answers

Using proportions, it is found that the percentage of the people surveyed own a bird is given by:

C. 6%.

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three. When the proportion is multiplied by 100%, a percentage is found.

The proportion of people who own a bird is:

p = 0.04 + 0.02 = 0.06.

Hence the percentage is of 6%, which means that option C is correct.

More can be learned about proportions at https://brainly.com/question/24372153

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Jason is cutting 25 pieces of firewood every 15 minutes. At that rate, approximately how many pieces of firewood will Jason cut in 35 minutes?

Answers

Answer:

Approximately 58 pieces can be cut in 35 minutes.

Step-by-step explanation:

Jason is cutting 25 firewood pieces in 15 minutes

Therefore, per minute rate of cutting firewood will be,

Rate = [tex]\frac{\text{Amount of firewood to be cut}}{\text{Time taken}}[/tex]

        = [tex]\frac{25}{15}[/tex]

        = [tex]\frac{5}{3}[/tex] pieces per minute

By this rate amount of firewood that can be cut = Rate × Time taken

= [tex]\frac{5}{3}\times 35[/tex]

= 58.33

≈ 58 pieces of firewood

Therefore, approximately 58 pieces can be cut in 35 minutes.

Karen was cutting out some fabric for a friend. She cut a piece that was 6 centimeters wide and had an area of 36 square cm. How long was the piece?

Answers

Answer:

The piece was 6 CM long because if its a 6 by 6 area it will make to a 36 square CM

Step-by-step explanation:

The length of piece of fabric is 6 cm.

What is area?

Area is the amount of space occupied by a two-dimensional figure. In other words, it is the quantity that measures the number of unit squares that cover the surface of a closed figure. The standard unit of area is square units which is generally represented as square inches, square feet, etc.

Given that, Karen was cutting out some fabric for a friend. She cut a piece that was 6 centimeters wide and had an area of 36 square cm.

Here, area of rectangular shaped fabric is Area =Length × Width

36=Length × 6

Length =6 cm

Therefore, the length of piece of fabric is 6 cm.

Learn more about the area here:

https://brainly.com/question/27683633.

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The area of a circle

Answers

Answer:

area of the circle = 36π cm²

But area of a circle = πr²

Which means,

πr² = 36π

r² = 36π/π

r² = 36

r = √36 = 6 cm

Radius = 6 cm

Your friend built a model car the model is 5.7 inches long and is built on 1:36 ratio scale how long is the real car

Answers

it will be 205.2 inches!

Historically, the average time to service a customer complaint has been 3 days and the standard deviation has been 0.50 day. Management would like to specify the control limits for an chart with a sample size of 10- and 3- sigma limits. The LCL for the chart would be:A) less than 2.40.B) greater than 2.40 but less than or equal to 2.45.C) greater than 2.45 but less than or equal to 2.50.D) greater than 2.50.

Answers

Oof I didn’t learn about this you can ask a class and go over it

Which equation describes a circle with a radius of 4 and a center located at (-5, 2)?
A. (1 – 5)2 + (y + 2)2 = 4
B. (1 – 5)2 + (y + 2)2 = 16
C. (1 + 5)2 + (y - 2)2 = 4
D. (1 + 5)2 + (y - 2)2 = 16

Answers

B is the answer. It makes perfect sense

what is the value of x? ​

Answers

Answer:

x = 18

Step-by-step explanation:

b squared + x squared = 30 squared

GIVING BRAINLIEST, PLS HELP!!!!! :((

Write a statement that correctly describes the relationship between these two sequences: 2, 4, 6, 8, 10 and 1, 2, 3, 4, 5.

Answers

Answer:

let the first sequence be denoted by A

and other sequence be B

then if be take 2 as common by A then we get 1 2 3 4 5 which is same as B this means A is double of B

Answer:Each term in the first sequence is the product of the second sequence multiplied by 2.Step-by-step explanation:1, 2, 3, 4, 5 are multiplied by 2 to get the product of the following terms: 2, 4, 6, 8, 10.

Hope this Helps!

Find the measure of the (2y-1)° angle

Answers

Answer:

69 degrees

Step-by-step explanation:

1) Find x

The angles measured x degrees and (x-28) degrees have a sum of 180 degrees because straight lines always have a measure of 180 degrees. Knowing this, construct the equation:

[tex]x+x-28=180\\2x-28=180[/tex]

Add 28 to both sides

[tex]2x-28+28=180+28\\2x=208[/tex]

Divide both sides by 2

[tex]\frac{2x}{2}= \frac{208}{2} \\x= 104[/tex]

Therefore, x is equal to 104 degrees.

2) Find the measure of the (x-28) degree angle

Plug x into x-28

[tex]x-28\\= 104-28\\= 76[/tex]

Therefore, the measure of this angle is 76 degrees.

3) Find y

All the interior angles in any triangle will add up to 180 degrees. Knowing this, we can construct another equation:

[tex](2y-1)+76+y= 180[/tex]

Open up the parentheses

[tex]2y-1+76+y= 180\\3y+75= 180[/tex]

Subtract both sides by 75

[tex]3y+75-75=180-75\\3y=105[/tex]

Divide both sides by 3

[tex]\frac{3y}{3}= \frac{105}{3} \\y=35[/tex]

Therefore, y is equal to 35 degrees.

4) Find the measure of the (2y-1) degree angle

Plug y into 2y-1

[tex]2y-1\\= 2(35)=1\\= 70-1\\= 69[/tex]

Therefore, y is equal to 69 degrees.

I hope this helps!

An airline food service finds that a recent flight of 120 passengers ordered dinner as depicted in the table to the right. Based on this data, how many lasagna dinners are likely to be needed for a flight with 360 passengers?​ Answer correctly for 100 points!

Answers

Answer:

3 times 25 = 75

Step-by-step explanation:

Plz vote Brainliest

There are 75 lasagna dinners are likely to be needed for a flight with 360 passengers.

What is Proportional?

Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.

Given that;

An airline food service finds that a recent flight of 120 passengers ordered dinner as depicted in the table to the right.

Here, Number of Lasagna for 120 passengers = 25

Hence, For 360 passengers number of lasagna is,

⇒ 120 / 35 = 360 / x

Where, x is umber of lasagna for 360 passengers

⇒ x = 360 × 25 / 120

⇒ x = 75

Thus, There are 75 lasagna dinners are likely to be needed for a flight with 360 passengers.

Learn more about the proportion visit:

https://brainly.com/question/1496357

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Factor the quadratic by checking factor pairs. [tex]8x^{2} +6x + 1[/tex]

Answers

Answer:

=(2x+1)(4x+1)

HELP giving brainlest and extra points!!!!!

Answers

the answer is 17!! 17 is the only answer that can make sense

Answer:

17

Step-by-step explanation:

for many infinite amount of answer possibilities the equation has to be the same

find the unknown side length x reader answer in simplest radical form.
A.15
B.5√10
C.2√70
D.4√37​

Answers

I think its option b

Evaluate 100-x^2, when x is 6
PLZZ HELP ME

Answers

Answer:

64

Step-by-step explanation:

Salvador just purchased his first home and wants a nice television. He plans to keep the television for several years and has no plans to move or change jobs. Which of these is the smarter purchase?

O A Hitachi 50" Plasma TV at $2799.99

O A Hitachi 50" Plasma TV at $279.99 per month for 12 months

O A Hitachi 50" Plasma TV at $244.92 per month for 12 months, plus a $27 finance charge.
O A Hitachi 50" Plasma TV at $495 per month for 6 months, plus an $18 finance charge.​
I will report if there is an file's attached

Answers

Answer:

a Hitachi 50 plasma tv at 495 per month for 6

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