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
SVEN [57.7K]
2 years ago
10

Can someone please help me on solving: x+y=-4

Mathematics
1 answer:
timama [110]2 years ago
5 0

Answer: x=-1 and y= -3

Step-by-step explanation:

Solve for x, x+y=-4

Minus y from both sides so it'll be X=-y-4

Now substitute -y-4 in x-y=2 and solve for y

-y - 4 -y=2

Add like terms, -2y - 4=2

Add 4 to both sides -2y=6

Divide both sides by -2 \frac{-2y}{-2} = \frac{6}{-2}

y= -3

Substitute -3 in x=-y - 4

x=-(-3) - 4

- × (-3)= 3

3 - 4= -1

x= -1

You might be interested in
Help please will mark!! Melissa the trainer has two solo workout plans that she offers her clients: Plan A and Plan B. Each clie
ioda

Answer:

3

clients who did Plan A and

2

who did Plan B. On Tuesday there were

8

clients who did Plan A and

4

who did Plan B. Linda trained her Monday clients for a total of

4

hours and her Tuesday clients for a total of

9

hours.

Step-by-step explanation:

let x equal the number of hours for each plan A workout.

let y equal the number of hours for each plan B workout.

on monday, there were 3 clients who did plan A workout and 2 clients who did plan B workout for a total of 4 hours.

the formula for monday becomes 3x + 2y = 4

on tuesday, there were 8 clients who did plan A workout and 4 clients who did plan B workout for a total of 9 hours.

the formula for tuesday becomes 8x + 4y = 9

you have to solve these 2 equations simultaneously.

they are:

3x + 2y = 4

8x + 4y = 9

multiply both sides of the first equation by 2 and leave the second equation as is to get:

6x + 4y = 8

8x + 4y = 9

7 0
3 years ago
Write 1 3/4 as a decimal and as a percent
scoray [572]

Answer:

Decimal: 1.75

Percentage: 175%

3 0
2 years ago
Read 2 more answers
W is less than or equal to – 2 and greater than or equal to - 8
maw [93]

Answer:

-8 ≤w ≤-2

Step-by-step explanation:

4 0
3 years ago
What is the slope of the line through the points (8, -2) and (8, -8)?
gulaghasi [49]

Answer:

Step-by-step explanation:

(-8+2)/(8-8)= -6/0= undefined

8 0
3 years ago
Two kg of tea and 3 kg of sugar cost rupees 39 in january 1997, However in march 1997 the price of the tea increased by 25% and
Irina18 [472]

Answer: tea = 15 rupees  per kg

sugar= 3 rupees per kg

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations with the information given:

<em>"Two kg of tea and 3 kg of sugar cost rupees 39 in january 1997": </em>

2 t + 3 s =39 (a)

Where:

  • t= price of 1 kg of tea
  • s = price of 1 kg of sugar

<em>"in march 1997 the price of the tea increased by 25% (1.25)and the price of the sugar increased by 20%(1.20) and the same quantity of tea and sugar cost rupees 48.30. "</em>

2(t1.25)+3(s1.2) = 48.30 (b)

  • <em>Solving for t in (b) </em>

2t =39-3s

t = (39 -3s)/2

t = 19.5-1.5s

  • <em>Replacing the value of t in (b) </em>

2 x ((19.5-1.5s)1.25)+ 3 ( 1.2s) =48.30

2x ( 24.375 -1.875s) +3.6s =48.30

48.75 -3.75s+3.6s= 48.30

48.75-48.30 = 3.75s-3.6s

0.45= 0.15s

0.45/0.15 =s

3 =s

  • <em>Replacing the value of s in (a) </em>

2 t + 3 (3) =39

2 t + 9 =39

2 t =39 -9

2 t =30

t = 30/2

t= 15

Prices in january:

tea = 15 rupees per kg

sugar= 3 rupees per kg

Feel free to ask for more if needed or if you did not understand something.

4 0
2 years ago
Read 2 more answers
Other questions:
  • For any circle, is exactly equal to: 3.14
    10·1 answer
  • 7 times as many 3,073
    9·2 answers
  • A hotel chain wants to estimate the mean number of rooms rented daily in a given month. The population of rooms rented daily is
    6·1 answer
  • Name the line segments
    14·1 answer
  • Determine if the statement is always, sometimes or never true.. An exterior angle of a triangle is 180 degrees
    15·2 answers
  • 4 1/2 x 2 3/5 what is the answer simplified into fraction
    15·1 answer
  • PONTOS GRATIS BRASIL ​
    10·2 answers
  • Find mZ1 and mZ2 .<br><br> I cant figure it out
    9·1 answer
  • Can someone help me?
    8·1 answer
  • Which equation is the correct translation of the following statement?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!