1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AfilCa [17]
3 years ago
7

Find the solution of the system of equations. -7x - 3y = - 20 3x+ 6y = -15

Mathematics
1 answer:
KiRa [710]3 years ago
3 0

Answer:

x = 5   y = -5

Step-by-step explanation:

-7x - 3y = -20

-3y = 7x - 20

y = -7/3x + 20/3

3x + 6(-7/3x + 20/3) = -15

3x - 14x + 40 = -15

-11x = -55

x = 5

-7(5) - 3y = -20

-35 - 3y = -20

-3y = 15

y = -5

You might be interested in
Grace and her children went into a grocery store and where they sell bananas for $0.50 each and mangos for $0.75 each. Grace has
nlexa [21]

Answer:

Grace could buy 1 or 2 bananas and not more than that and hence she cannot make the total count of fruits tleast 13.

Step-by-step explanation:

Cost of 1 banana = $0.5

Cost of 1 mango = $0.75

Total money Grace  has = $7.25

Grace has decided to buy 8 mangoes costing = 8 \times 0.75

                                                                             = $6

Grace has to buy a minimum of 13 mangoes and bananas altogether.

After Grace buy 8 mangoes , money remaining with her = 7.25 - 6

                                                                                              = $1.25

With the remaining money she has to buy bananas which cost her $0.5 each.

With $1.25 she can buy a maximum of 2 bananas only and the total number of fruits equals 10.

Hence it is not possible to buy 13 fruits altogether.

8 0
3 years ago
Please answer it would mean so much to me :)
maxonik [38]

Answer:

y = \frac{1}{3} x + 2

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

3x + y = 4 ( subtract 3x from both sides )

y = - 3x + 4 ← in slope- intercept form

with slope m = - 3

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-3} = \frac{1}{3}

Given c = 2 , then

y = \frac{1}{3} x  + 2 ← equation of perpendicular line

8 0
3 years ago
Fill in each box with the correct number or variable.
Licemer1 [7]

Answer:

8 would be there.

Step-by-step explanation:

am sorry i cant explain cause my battery is really low

4 0
3 years ago
PLEASE HELP ASAP! DUE SOON PLEASE SHOW YOUR WORK
viktelen [127]

Answer:

So for the first one the first ting u have to do is FLIP the equation so---> X-12=y

Then you have to add 12 to BOTH sides----> x-12+12=y+12

<u><em>So your answer for X ----> x=y+12</em></u>

<u><em>For Y on the first equation it is--->y=x-12</em></u>      (Just flipped and the sign changed)

For the second equation we are gonna solve for Y first.

The first thing u want to do is divide both sides by -3 so it will look like this

-3y/-3    =   2x/+36/-3

<u><em>So Y will equal-----> -2/3x- 12</em></u>

Now we are going to do the X part

So fist FLIP the equation---->      2x+36=  -3y

The add -36 to both sides-----> 2x+36+-36=-3y+-36

Last step you have to divide both sides by 2

So that would be----> 2x/2= -3y-3

<u><em>Your final result will be----> x=-3/2y-18</em></u>

I hope this helped you out (:::::::

6 0
3 years ago
What is -5 to the fourth power
inessss [21]

Answer: -20

Step-by-step explanation: multiply -5 and 4

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is 5,9,3/7, and -2/3 from least to greatest
    8·1 answer
  • What is the next fraction in this sequence? 1/74, 1/37, 2/37, 4/37
    12·1 answer
  • Without solving, tell whether the linear system has one solution, no solution, or infinitely many solutions.
    7·1 answer
  • Im really struggling with these questions can anyone help me?
    11·1 answer
  • Jolie uses 1.5 tomatoes every day to prepare her salad. If x equals the number of tomatoes Jolie had before she made her salad a
    5·1 answer
  • Carrie earns $8.50 per hour for tutoring her little brother. How many hours must Carrie tutor to earn $408?
    12·1 answer
  • Solve for why please.
    7·1 answer
  • WILL GIVE BRAINLIEST! How many possibilities of HELPS are there?
    11·1 answer
  • Select all of the right triangles.
    9·1 answer
  • Pythagorean triplets of 26​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!