3x – 9y = -39
-3x – 7y = -25 systems of elimination

Answers

Answer 1

Answer:

y= 4 , x= -1

Step-by-step explanation:

3x-9y= -39

-3x-7y= -25

-16y= -64

y= -64/-16

y= 4

substitute y into any equation

3x -9(4) = -39

3x-36= -39

3x= -39+36

3x= -3

x= -3/3

x= -1


Related Questions

7/8th grade math please help!

Answers

Answer:

H) 320 square units for the surface area

Step-by-step explanation:

20(5.2+5.25+4.5) + 2(1/2(4*5.25)) = 320

Pleaseee answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

It depends

If you are mapping figure M to figure L it would be:

right; 8

up; 7

If you are mapping figure L to figure M it would be:

left; 8

down; 7

Step-by-step explanation:

I NEED HELP ASAP I WILL GIVE ALL MY POINTS AWAY FOR THIS

Answers

Step-by-step explanation: the tangent is 8/6 because it is the opposite (8) over the adjacent (6)

5x + 2 <22
Inequality

Answers

Answer:

the answer to the inequality is

Step-by-step explanation:

x = 3

Answer:

[tex]x < 4[/tex]

Step-by-step explanation:

1) Subtract 2 from both sides.

[tex]5x < 22 - 2[/tex]

2) Simplify 22 - 2 to 22.

[tex]5x < 20[/tex]

3) Divide both sides by 5.

[tex]x < \frac{20}{5} [/tex]

4) Simplify 20/5 to 4.

[tex]x < 4[/tex]

So, therefor, the answer is, x < 4.

How do I write an equation for a line with a slope of ²/³ that has a y-intercept at -2.Titer eat at 2

Answers

Answer:

y = 2/3x - 2

Step-by-step explanation:

Given :

Slope, b = 2/3

y - intercept, c = - 2

The equation of a line can be expressed in slope intercept form as :

y = bx + c

b = slope ; c = y - intercept

Hence, line equation becomes ;

y = 2/3x - 2

Ammmmmareeeeeeeeeeeetftfygugugjbjbbihviyv

Answers

Answer:

[tex] {3x}^{2} + 6x[/tex]

have a nice day

take care of yourself

PLEASE HELP!! this is due tonight.

Answers

The height is 8 your welcome

Question 7 of 10
What is the length of BC in the right triangle below?

Answers

Answer:

A

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

BC² = 9² + 12² = 81 + 144 = 225 ( take the square root of both sides )

BC = [tex]\sqrt{225}[/tex] = 15 → A

Answer:

A

Step-by-step explanation:

Plz need an answer fast

Answers

Answer:

Not a function becuase one input value corresponds with multiple output values.

Step-by-step explanation:

Hope it helps

An experiment consists of randomly selecting a marble from a bag, not replacing it, and then selecting another marble. The bag contains 3 yellow marbles and 2 white marbles. What is the probability of selecting a white marble and then a yellow marble?

Answers

Answer:

The bag contains 4 blue marbles, 3 green marbles, 7 red marbles, and 1 yellow marble. What is the probability of selecting a red marble and then a blue marble? Question 3 ... 4 blue marbles+ 3 green marbles+ 7 red marbles+ 1 yellow marble= 15 ... P(red,blue0 = 7/15 * 2/7 = 2/15 =.13333333 = 13.33%.

Step-by-step explanation:

Answer:

There are 14 total marbles. The probability of drawing a yellow marble on the first draw is 3/14. Given replacement, the probability on the second draw is the same as on the first draw, so the probability of a black marble on the second draw is 6/14. The probability of drawing first a yellow marble then a black marble is 3/14 * 6/14 = 18/196.

help help help its baby work

Answers

Answer:

the volume of the larger cube is 512

Step-by-step explanation:

we plug in the value of the side into the equation

so we get

8 x 8 x 8= 512

hope this helps <3

26 out of 65 as a percentage
How would you do that without a calculator?

Answers

Answer:

40%

Step-by-step explanation:

you would first simply the fraction down

13 goes into both numbers so the fraction can be simplified to

2/5 which is think is simply enough to know that 2/5 is 40% but if not the explanation would be

100÷5 =20

20 x by the 2 from the fraction

= 40%

40%--------------------------

Step-by-step explanation:

65 = 100%

0.65 = 1%

26 = x%

x = (26 ÷ 0.65)%

x = 40%

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Guys please I need a lot of help I would deeply appreciate it

Answers

Answer:

I think is number 2 in the corner

what is the area of the shaded region? ​

Answers

Answer:

ft25x25ft footjob is great

Step-by-step explanation:

tags:asuna zero two

That area is the square is 25 x 25 = 625

The circle touches the square so the diameter of the circle is 25.

Area of the circle = pi x r ^2 where r is half the diameter.

Area of circle = 3.14 x 12.5^2 = 490.625

The area of the shaded region is the area of the square - area of the circle:

625 - 490.625 = 134.375 square feet.

Elaina charged $83 on her credit card to buy groceries. If the
balance is now $294, what was the balance before she bought
groceries?

Answers

Answer:

211?

Step-by-step explanation:

I'm not sure if this is correct, but:

294-83=211.

Hope this helps! :)

The balance before she bought the groceries was $277.

What are mathematical operations?In mathematics, an operation is a function which takes zero or more input values (also called "operands" or "arguments") to a well-defined output value.There are five fundamental operations in mathematics: addition, subtraction, multiplication, division, and modular forms

Given is that Elaina charged $83 on her credit card to buy groceries. The balance is now $294.

The balance before she bought the groceries is -

294 + 83

277

Therefore, the balance before she bought the groceries was $277.

To solve more questions on addition, visit the link below -

https://brainly.com/question/29207465

#SPJ2

       

Negative 11/14 times negative (1/17)

Answers

Step-by-step explanation:

[tex] - \frac{11}{14} \times - \frac{1}{17} \\ = \frac{11}{14 \times 17} \\ = \frac{11}{238} [/tex]

Hope it will help :)

Answer:

The answer is 11/238

Hope it helps

PLEASE HELP ME, ITS ONLY ONE QUESTION!!!!!!!

Answers

Answer:

B and D are both correct.

B and C are correct

on 5x (2 + 1)2 : 3 =

Answers

Step 1 Add 2 to both sides.

5x=3+2

Step 2 Simplify  3+23+2  to  55.

5x=5

Step 3 Divide both sides by 5.

x=1

Hoped this helped :)

Also if this answered your question you can maybe give me brainilest?

Please show work. It’s really urgent too! Thanks :) Sorry if it’s bad quality.

Answers

‎‎‎‎i think that for number one it would be

WILL MARK BRAINIEST AND GOOD REVIEW

Answers

Answer:                                                             ummmm... 24%

Step-by-step explanation:

Hi, if you could help that would be great :)

Answers

Answer:

Similar

Step-by-step explanation:

12/7.2 =1.66666666 Use ratios to determine if they are similar using SSS similarity.

18/10.8 =1.6666666

10/6 =1.666666666 They are similar b/c all the sides are proportional to one another.

Answer:

Similar

Step-by-step explanation:

each of the sides are proportionate

Sixty-four is the product of eight and the sum of a number and six.

Answers

Answer:

64 is the sum of the numbers

58 + 6 = 64

PLEASE MARK ME AS BRAINLIEST

13. The surveys of interest for a concert produced these data points about the relation between ticket

price and ticket sales

Ticket Price (S)

3

5

7

9

11

13

Ticket Sales (S) 1447 1353 1212 1025 790 509

(A) Find the quadratic equation that best models the data,

14a)

(B) Predict the ticket sales if the tickets are $8 each.

14b)

(C) What would the price of the ticket have been if there

is $1000 in ticket sales?

14c)

Answers

Answer:

1500.110 - 0.157x - 5.853x² ;

1124.262

Step-by-step explanation:

Given the data:

Price __ Sales

3 ____1447

5 ___ 1353

7 ____ 1212

9 ____1025

11 ____790

13 ____509

Usibg the quadratic regression calculator :

1500.110 - 0.157x - 5.853x²

If ticket price = $8 each

Ticket sales will be :

y = 1500.110 - 0.157(8)- 5.853(8^2)

= 1124.262

arm-Up
Active
Identifying the System of Measurement
Check
Sort the units of measure into the appropriate system.
Customary System
Metric System
miles
ounces
deciliters
kilometers
centigrams
cups

Answers

customary system; miles, cups, ounces

metric system; deciliters, kilometers, centigrams

Answer:

just here to say the guy above me is correct

Step-by-step explanation:

did it on edge 2021 :D

A sweatshirt was on sale for 20% off. The original
price was $24. What is the sale price of the sweatshirt?

Answers

Answer:

$19.20

Step-by-step explanation:

20% of 24 is 4.8.

24-4.8=19.2

Answer:

19.20

Step-by-step explanation:

20% of 24 is 4.8.

24-4.8=19.2

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is each statement true or false?
Speed is a function of time.

Time is a function of distance.

Speed is a function of number of students racing.

Time is a function of speed.

Answers

B.Time is a function of distance. is the answer ot the question

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is each statement true or false?

Speed is a function of time.

Time is a function of distance.

Speed is a function of number of students racing.

Time is a function of speed.

A sales person makes $200 each week plus additional $24 per sale. The sales person wants their weekly paycheck to be at least $500

Answers

If the sales person wants to make at least 500 dollars they will have to make 12.5 sales that week
Explanation:
Do the equation 500=24x+ 200 because they want to make $500 and they get 24 dollars per sale plus the $200 automatically each week. So just solve the equation and you should get 12.5.
500=24x+200
-200 -200
300=24x
/24 /24

X=12.5

plz answer this Solve y+8≥9. Graph the solution.

Answers

Answer:

y≥1

Step-by-step explanation:

y+8 ≥ 9

-8     -8

______

y≥1  

i hope it makes sense(i tried to make it look like how you would do it on paper)

Please hurry I’m having trouble on this question

Answers

Answer:

c

Step-by-step explanation:

Answer:

B. Y = 1.5x

Step-by-step explanation:

Deshaun decides to find out what snack food students like at her middle
school. What should she do to get the most accurate information? *
O ask her friends
take a survey among the girls in her class
take a survey among students in each grade
O find out what was ordered last year

Answers

Answer:

take a survey because if she gets what they got last year its diffrent peope. noe

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