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
erastovalidia [21]
2 years ago
9

I need help can I have how to do it and some work so I can do it.

Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
8 0

Answer:

x = -2  ||   y = -3

Step-by-step explanation:

5x - 2y = -4

x + 2y = -8

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

5x - 2y = -4

5x = -4 + 2y

x = (-4 + 2y)/5

x + 2y = -8

x = -8 - 2y

Solving simultaneously:

-8 - 2y  =   (-4 + 2y)/5

5(-8 - 2y) = -4 + 2y

-40 - 10y = -4 + 2y

-40 + 4 = 2y + 10y

-36 = 12y

y = -3

if y is -3 then x is:

x = -8 - 2y

x = -8 - 2(-3)

x = -2

You might be interested in
WILL MARK BRAINLIEST FOR BEST ANSWER! SERIOUS ANSWERS ONLY!
alexira [117]

Answer:

Step-by-step explanation:

2081.25 ; 2312.50 ; 2543.75 ; ..... 7500

a= 2081.25

d = 231.25

t_{n}= 7500

a + (n-1)d = t_{n}

2081.25 + (n-1) * 231.25 = 7500

(n -1) *231.25 = 7500 - 2081.25

231.25n - 231.25 = 5418.75

231.25n = 5418.75 + 231.25

231.25n = 5650

n = 5650/231.25  = 565000/23125

n = 904/37

n = 24 years 157 days

6 0
2 years ago
stock a changed by -5.70 during the the day stock b changed be 2 1/3 times that amount. how much did stock b change during the d
Romashka-Z-Leto [24]

Answer: -13.3

Step-by-step explanation:

2 1/3 * -5.70 = -13.3

7 0
4 years ago
Suppose your family is driving home from vacation. The car averages 25 miles per gallon, and you are 180 miles from home. The fu
inysia [295]

Answer:hi

Step-by-step explanation:

7 0
3 years ago
If you make me laugh you get points free points best joker will be marked brainliest
Mars2501 [29]

Answer:

Step-by-step explanation:

Show that x+x=1

5 0
3 years ago
Read 2 more answers
Need help ASAP please
Kay [80]

Answer:

because the length is 4 feet more than the width

=> the length is x + 4 (feet)

because the base has an area of 21 square feet

=> x(x + 4) = 21

<=> x² + 4x = 21

3 0
3 years ago
Other questions:
  • 6% commission on $8450
    11·1 answer
  • I need to solve this equation: x= r-h/ y<br> for h and then for r
    11·2 answers
  • Suppose the diameter of a circle is 6 units What is its circumference?
    7·1 answer
  • Suppose you accumulated $500,000, perhaps from many years of saving. You put the money in a savings plan earning 6% compounded m
    6·1 answer
  • Here is the histogram of a data distribution. All class widths are 1.
    11·1 answer
  • Given f(x) = 2x-3, what is the value of f(3)?
    14·1 answer
  • $500 invested at 4% compounded annually for 10 years
    10·1 answer
  • 9. John drives a total of 16.5 miles to and from his friend's house. He visited his friend
    8·1 answer
  • There are 36 chips numbered from 1 to 36 placed in a barrel. One chip is randomly pulled from the barrel.
    12·1 answer
  • Please help (question is in the attachment) :(
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!