-6x+2y=-14.
-9x+3y=-21

Answers

Answer 1

Answer:

-no solution-

Step-by-step explanation:

Let's solve your system by elimination.

−6x+2y=−14;−9x+3y=−21

Multiply the first equation by 3,and multiply the second equation by -2.

3(−6x+2y=−14)

−2(−9x+3y=−21)

Becomes:

−18x+6y=−42

18x−6y=42

Add these equations to eliminate y:

0=0

Answer:

Infinitely many solutions.

Let's solve your system by substitution.

−6x+2y=−14;−9x+3y=−21

Step: Solve−6x+2y=−14for x:

−6x+2y=−14

−6x+2y+−2y=−14+−2y(Add -2y to both sides)

−6x=−2y−14

−6x

−6

=

−2y−14

−6

(Divide both sides by -6)

x=

1

3

y+

7

3

Step: Substitute

1

3

y+

7

3

forxin−9x+3y=−21:

−9x+3y=−21

−9(

1

3

y+

7

3

)+3y=−21

−21=−21(Simplify both sides of the equation)

−21+21=−21+21(Add 21 to both sides)

0=0

Answer:

Infinitely many solutions.

Answer 2

If you divide first equation by two and the second by three they are both the same line so there are infinitely many solutions.


Related Questions

What is 12 divided by 8

Answers

Answer:

1.5

Step-by-step explanation:

Answer:

1.5 is the answer

hope it helps!

Brianna measured the length of the cafeteria table in inches. She measured the same table in feet. Which unit would Brianna need more of to measure the length of the table? feet or inches and why?

A. She will need more inches than feet since feet are larger.
B. She will need more inches than feet since inches are larger.
C. She will need need more feet than inches since feet are smaller.
D. She will need the same number of inches and feet since they are the same size.

Answers

Answer:

A .she will need more inches than feet because feet are larger

Step-by-step explanation:

A bus that is traveling north at 48 km/h slows to a stop to pick up passengers. It then begins moving again. At the next corner, it turns to the east.

a. Identify the speed of the bus.

b. Identify one example of the velocity of the bus.

c. Identify each group of words or phrases that describe acceleration of the bus.

Answers

The answer is a ——aaa

I put a random subject but can u please help with this question

Answers

Answer:

Parasitism

Step-by-step explanation:

i need help with this

Answers

Answer:

The first one is 10.5, I am unsure about the second one but I think 338.56.

A $129.50 stereo is discounted 40%.The next month the sale price is discounted 60%. Is the stereo now free if not what is the sale price?
Let’s see if any of you get it my teacher asked me this on Thursday I got it right. Must shows step-by-step explanation

Answers

Answer:

no, it is not free. $31.08 is the sale price

Step-by-step explanation:

1 - .4 = .6 –––––> paying 60% of original price with first discount

129.50 • .6 = $77.70

1 - .6 = .4 ––––––> paying 40% of the discounted price

77.70 • .4 = $31.08 is the sale price

A changes saved
Set up a proportion and use it to solve for x.
2
10
х
3

Answers

Answer:

C. 15

Step-by-step explanation:

The following proportional can be set-up for the figure given:

[tex] \frac{x + 3}{x} = \frac{10 + 2}{10} [/tex]

Solve for x

[tex] \frac{x + 3}{x} = \frac{12}{10} [/tex]

[tex] \frac{x + 3}{x} = \frac{6}{5} [/tex]

Cross multiply

[tex] 5(x + 3) = x(6) [/tex]

[tex] 5x + 15 = 6x [/tex]

15 = 6x - 5x

15 = x

x = 15

What is the answer to 0.3 x 3 1/3 =

Answers

Answer:

1

Step-by-step explanation:

Hope this helpsss

Answer:

1

Step-by-step explanation:

The equation is 3/10 times 10/3, which is 30/30, which equals 1.

(hope this helps :P)

PLEASE HELP! Which of the following expressions are equivalent to (x+y) - (-z)?

A) (x+y)-z

B)x+(y+z)

C) none of the above

Answers

Answer:

c

Step-by-step explanation:

none of them equal (x+y)-(-z)

Please include the steps that took you to get your answer. I am very confused on what to do with the 1/2.

Answers

First let's review how to expand this!

(ax+b)^2=a^2*x^2+2abx+a^2

In this case

(2x^2+1/2)^2=2^2*x^2+2*1/2*2x+(1/2)^2

=4x^2+2x+1/4

Done!

Explain how to find the mean of a data set

Answers

You have to add all the numbers together then divide by the amount of numbers. For example,
1. 3, 5, 8, 4
2. 3+5+8+4= 20
3. 20 divided by 4 = 5
4. The mean is 5

Answer:

First, add the numbers in the data set. Then, divide the sum by the number of numbers. The quotient is the mean.

 

I hope this helps!

As one object gets closer to another object the force of gravity will increase?

Answers

Answer:

no

Step-by-step explanation:

gravity is relevant to when something is being affected by the gravitational pull on earth, or any other planet. for example, i throw an apple into the air. and it comes back down, as newton said. what must come up, must come down. because of gravity, two objects being closer together does not affect the gravitational pull whatsoever. and the force of gravity doesn't change. as gravity just works on it's own, independent of the object, not dependent on the object. however certain objects will fall abit faster than others.

Ivan and Tanya share £150 in the ratio 4:1
Work out how much more Ivan gets compared to Tanya.


Answers

Answer:

Step-by-step explanation:

The £150 must be split 5 ways with Ivan getting 4 of those splits.

£150/5

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

£30

Ivan gets £30 times 4 (remember, Ivan gets a four split).

Tanya gets £30.

Ivan gets £120.

Tanya gets £30.

£120

- £30

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

£90

Ivan gets £90 more than Tanya.

Hope this helped!

Please help geomtry!

Answers

Answer:

13

Step-by-step explanation:

By angle bisector property:

[tex] \frac{28}{49} = \frac{12}{2x + 7 - 12} \\ \\ \frac{4}{7} = \frac{12}{2x - 5} \\ \\ 4(2x - 5) = 12 \times 7 \\ \\ 8x - 20 = 84 \\ \\ 8x = 84 + 20 \\ \\ 8x = 104 \\ \\ x = \frac{104}{8} \\ \\ x = 13[/tex]

7. If AJKL - ANMP, find the value of x.
P x +5 N
49
14
M
J 9x + 1 L

Answers

Answer:

Since they are similar their sides are corresponding,

9x + 1 / x + 5 = 49 / 14

or, 14 ( 9x + 1 ) = 49 ( x + 5 ) { cross multiply}

or, 126x + 14 = 49x + 245

or, 77x = 231

or, x = 231/77

or, x = 3

Hope it helped

ALL THE BEST!!

( Hope u will mark me brainliest )

Question 5 of 20
Which of the following triangles are right triangles? Check all that apply.
A. A triangle with side lengths 8, 15, 17
B. A triangle with side lengths 9, 12, 15
C. A triangle with side lengths 5, 12, 13
D. A triangle with side lengths 6 inches, 8 inches, 12 inches

Answers

Answer:

B. A triangle with side lengths 9 12 15

Step-by-step explanation:

9/3= 3

12/3= 4

15/3 = 5

A perfect right triangle is 3, 4, 5.

A curve has equation y = f(x). (a) Write an expression for the slope of the secant line through the points P(2, f(2)) and Q(x, f(x)). x − 2 f(x) − f(2) f(2) − 2 f(x) − x f(x) − x f(2) − 2 f(x) − f(2) x − 2 (b) Write an expression for the slope of the tangent line at P. lim x→0 f(x) − f(2) x − 2 lim x→2 x − 2 f(x) − f(2) lim x→2 f(x) − f(2) x − 2 lim x→0 f(x) − x f(2) − 2

Answers

The answer is the expression point giving at the right angle of the answe

Please help with my question

Answers

Answer:

the answer is: A

Step-by-step explanation:

31/2×12/3=3 2/6

I got 4 2/6, hoped I help

2) The bicycle shop charges $15 plus $6.50
per hour to rent a bike. How many hours
did Henry pay to rent the bike if he paid
the shop $327?

Answers

327 - 15 = 312
312 / 6.5 = 48 hours

Answer:

48 hours

Step-by-step explanation:

Subtract 15 from 327

Divide result by 6.5

A number is divided into two parts, such that one part is 10 more than the other, if the two parts are in the ratio 5:3, find the number and the two parts.

Answers

Answer:

Step-by-step explanation:

25:15

5x5=25

3x5=15

Jada’s teacher fills a travel bag with 5 copies of a textbook. The weight of the bag and books is 17 pounds. The empty travel bag weighs 3 pounds. How much does each book weigh? whats the equation not the answer

Answers

5×3=15

17+15=32

Step-by-step explanation:

3÷17=15

15+5=20

Answer:

Step-by-step explanation:

For what value of x is the rational expression below equal to zero?
X- 4/X-6

Answers

When x equals to 4

4-4 = 0
-------------
4-6 = -2

0/-2 = 0

hope this helps

What is 100x100000000000000000000000000000000000. Show work

Answers

Answer:

1e + 37

Step-by-step explanation:

the work is to much!

Distribute 28(2b + 1f + 1p)

Answers

Answer:

56b + 28f + 28p

Step-by-step explanation:

i think

What is an
equation of the line that passes through the points (-5, 8) and
(5,0)?

Answers

Answer:

y=4/5x-4

Step-by-step explanation:

use formulas (y2-y1)/(x2-x1) and y=mx+b

slope (y2-y1)/(x2-x1):

(8-0)/(5-(-5))

=8/10

=4/5

equation (y=mx+b):

0=4/5(5)+b

0=4+b

b=-4

Four friends go to dinner. Each chooses a different meal. When the check comes, they decide they will each pay the same amount. If the costs of the meals (including tax and tip) were $12.20, $11.00, $8.50, and $7.50, what should each friend pay so they cover the whole bill?​

Answers

Answer: Each friend should pay $9.80

Step-by-step explanation: First add up all their checks, then divide them by 4 (4 because there 4 friends) to get the amount each friend needs to pay.

$12.20 + $11.00 + $8.50 + $7.50= $39.20

39.30 / 4 = $9.80

Two chemical plants, one at Macon and one at Jonestown, produce two types of fertilizer, low phosphorus (LP) and high phosphorus (HP). At each plant, the fertilizer is produced in a single production run, so the two types are produced in fixed proportions. The Macon plant produces 1 ton of LP and 3 tons of HP in a single operation, and it charges $600 for what is produced in one operation, whereas one operation of the Jonestown plant produces 1 ton of LP and 1 ton of HP, and it charges $1,000 for what it produces in one operation. If a customer needs at least 100 tons of LP and 180 tons of HP, how many production runs from each plant should be ordered to minimize the cost.

Answers

Answer:500

Step-by-step explanation:

There are 100 production runs from each plant should be ordered to minimize the cost.

What is Production?

The process of making or manufacturing goods and products from raw materials or components is called Production.

The Macon plant produce 1 ton of LP and 3 tons of HP in single operation, and it charge $600 for what is produced in one operation.

And, One operation of Jonestown plant produce 1 ton of LP and 1 ton of HP, and it charges $1,000 for what it produces in one operation.

And, A customer needs at least 100 tons of LP and 180 tons of HP,

Now, A graph of the requirements shows the feasible region is bounded by a polygon with vertices (Macon and Jonestown) as,

= (0, 180), (40, 60), (100, 0).

Hence, By checking costs of these solutions, we find the lowest cost to be obtained when 100 production runs should be ordered from Macon.

So, There are 100 production runs from each plant should be ordered to minimize the cost.

Learn more about the production visit:

https://brainly.com/question/26460726

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is this graph a function?​

Answers

Answer:

yessss my dear

I hope to help you

A line passes through the points (4,9) and (12,20) what is the slope of the line?

Answers

Slope form y2-y1 / x2-x1 = m
20 - 9 = 11
12 - 4 = 9

The slope of the line is 11/9

Answer:

11/8

Step-by-step explanation:

[tex]slope = \frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]

20 - 9 = 11

12 - 4 = 8

slope = 11/8

PLS HELP I WILL BRAINLIEST 15 PTS

An ice cream truck sells ice cream between 2 p.m. and 10 p.m. each night in the summer. At the end of the night, the driver calculates his profits and makes a graph to analyze the data. What is the average rate of change for the data from the 2nd hour to the 6th hour? Be sure to include the correct units of measurement.

a scatter plot with x axis labeled Hour and y axis labeled Money Earned in Dollars per Hour with points at 1 comma 54 and 2 comma 58 and 3 comma 64 and 4 comma 78 and 5 comma 96 and 6 comma 126 and 7 comma 99 and 8 comma 75

17 hours
68 dollars
17 dollars per hour per hour
68 dollars per hour per hour

Answers

Answer:

17

Step-by-step explanation:

A slope is also known as the gradient of a line. The correct option is C, 17 dollars per hour.

What is Slope?

A slope is also known as the gradient of a line is a number that helps to know both the direction and the steepness of the line.

The average rate of change for the data from the 2nd hour to the 6th hour is,

Average rate = ($126 - $58)/(6 hour - 2 hour)

                      = 68/4 dollar per hour

                      = 17 dollars per hour

Hence, The average rate of change for the data from the 2nd hour to the 6th hour is 17 dollars per hour.

Learn more about Slope of Line:

https://brainly.com/question/14511992

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