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
4vir4ik [10]
3 years ago
5

Solve the simultaneous equations -x + 5y = -7 x + y = – 5 x = 1 y= 0

Mathematics
2 answers:
vodomira [7]3 years ago
5 0

y= -5-x

-x + 5(-5-x) = -7

-x -25-5x =-7

-x-5x = 25 -7

-6x= 18

x = -3

-3 +y = -5

y= -5 +3

=-2

-(-3) + 5(-2)

3 - 10 = -7

olga_2 [115]3 years ago
4 0

Answer:

y= -2, x= -3

Step-by-step explanation:

Firstly, substitute the x and y values:

-x + 5(0)= -7

x+ 0 = -5

second thing to check: DSA - different signs addition (positive x and -x)

-x+5y=-7 take away x+y=-5

6y= -12

y= -2

To find x: -x + 5(-2)= -7

-x= -7 + 10

x= -3

You might be interested in
Which is the solution of set?
Anna [14]

Answer:

the answer is x >0 hope this helped

4 0
3 years ago
13. If the following fractions were converted to decimals, which one would result in a repeating decimal? A. 3/4 B. 1/9 C. 5/11
Vladimir [108]
Hey there!

In order to find if a fraction would result in a repeating decimal, recall that a fraction is a division problem written vertically. All that you have to do is divide the numerator by the denominator. Also, remember that a repeating decimal will result in the same number after the decimal point as long as the calculator can handle. 

3 ÷ 4 = 0.75

1 ÷ 9 = 0.11111111...

5 ÷ 11 = 0.45454545...

3 ÷ 0.42857143...

As you can see, two out of your four answer choices give you a repeating decimal. B gives you a repeated number of "1" while C gives you "45". D doesn't count since there is no pattern of repeated numbers that it follows. 

Both B and C fall into the category of repeating decimal. If you're only able to choose one answer, I would ask your teacher, a parent, or a peer what they think. 

Hope this helped you out! :-)
5 0
3 years ago
Change 0.7 to a common fraction
madam [21]
0.7 =  \frac{7}{10}
4 0
3 years ago
Read 2 more answers
What's the difference between perpendicular bisectors and altitudes
FromTheMoon [43]
Perpendicular bisectors help you find the centroid; altitudes help find the orthocenter. This is all in a triangle.
4 0
3 years ago
What is the slope of the line on the graph below?
olganol [36]
Take two ordered pairs along the line and calculate the change in y over change in x or rise over run.

(0,-5)(3,-4)

-4-(-5) / (3-0)
1/3

Final answer: 1/3
7 0
3 years ago
Read 2 more answers
Other questions:
  • Variables x and y are in direct proportion, and y = 35 when x = 2m. If x = 8m, then y =
    12·2 answers
  • The modern periodic table is organized by _________________ atomic number. Question 8 options: Developing Increasing Reducing De
    13·2 answers
  • Please can someone help me
    12·2 answers
  • If a semi-circle is rotated about the y-axis as shown below, what three-dimensional polyhedral would be formed? a Sphere b Cone
    7·2 answers
  • In one​ year, an online travel agency reported that summer travelers booked their airline reservations an average of 74.4 days i
    7·1 answer
  • What is 1.0682 to tenths, hundredth, thousandths
    9·1 answer
  • Can someone help me
    14·1 answer
  • Nora measured a community college and made a scale drawing. She used the scale 3 millimeters : 2 meters. If a building at the co
    14·1 answer
  • 1.
    11·1 answer
  • Let [] denote the operation a [] b = a+b - <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bab%7D%7B2%7D" id="TexFormula1" title="\fr
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!