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
Katen [24]
3 years ago
11

Solve the system of equations by substitution. (write your answer as an ordered pair) −5x + y = −2 −3x + 6y = −12 html editor ke

yboard shortcuts
Mathematics
1 answer:
k0ka [10]3 years ago
4 0
<span> −5x + y = −2 ----------------- (1)
 −3x + 6y = −12 --------------(2)

From (1):

-5x + y = -2
y = 5x - 2 --------------- sub into (2)
-3x + 6 (5x - 2) = - 12
-3x + 30x - 12 = -12
27x = -12 + 12
27x = 0
x = 0 ---- sub into (1)
-5(0) + y = -2
0 + y = -2
y = -2

answer: (0, -2)



</span>
You might be interested in
Of the 80 boys 55% play video games daily .how many boys play video games daily
s2008m [1.1K]
If you would like to know how many boys play video games daily, you can calculate this using the following steps:

55% of 80 = 55% * 80 = 55/100 * 80 = 44

Result: 44 boys play video games daily.
6 0
3 years ago
Read 2 more answers
One paper clip has alength of 1/10 foot. all of sam's paper clips lined up endto end measure 5 feet long.how many paper clips do
Norma-Jean [14]
Sam has 50 paper clips

If one paper clip has a length of 1/10 foot than 10 paper clips would make 1 foot.
6 0
3 years ago
Solve the following system of equations algebraically:<br> y = x2 - 6x + 9<br> y = -9x + 19
Ratling [72]
{(-5,64), (2,1)}

linear equation: y = -9x + 19
quadratic equation: y = x² - 6x + 9

Substitute the y in the quadratic equation by the its value in the linear equation.

-9x + 19 = x² - 6x + 9
      -  19               - 19    *subtract 19 to both sides
-9x         = x² - 6x -10
+9x              + 9x            *add 9x to both sides
0            = x² + 3x - 10
0            = (x + 5) (x - 2) *Factor

Set each factor = 0 and solve
x + 5 = 0    ;      x - 2 = 0
x = -5         ;      x = 2

Find the corresponding value of y using the linear equation.
y = -9x + 19

x = -5                              x = 2
y = -9(-5) + 19               y = -9(2) + 19
y = 45 + 19                    y = -18 + 19
y = 64                            y = 1

(-5,64)                              (2,1)

Check each value on each equation.
y = x² - 6x + 9
(-5,64)                                                  (2,1)
64 = (-5)² - 6(-5) + 9                          1 = 2² - 6(2) + 9
64 = 25 + 30 + 9                                1 = 4 - 12 + 9
64 = 64                                               1 = 1

y = -9x + 19
64 = -9(-5) + 19                                  1 = -9(2) + 19
64 = 45 + 19                                      1 = -18 + 19
64 = 64                                              1 = 1

{(-5,64), (2,1)}

3 0
3 years ago
Need help again math 7th grade ​
Olenka [21]

Answer: 1/2 as a fraction

.5 as a decimal

Step-by-step explanation: The probability of them rolling a number would be 3/6 or simplified 1/2 because if there is a 6 sided dice the denominator would be 6 and there are 3 odd numbers on the dice which are 1,3,and 5 so if u have to simplify it would be 1/2 if not 3/6. Also 1/2 as a decimal would be .5

4 0
3 years ago
Read 2 more answers
A point's coordinates are changed from (–7, –2) to (–7, 2). What effect does this have on the location of the point
Inessa [10]
It will move it from one section to another and make the x axis 4 units more to the right
7 0
3 years ago
Other questions:
  • 4141​% of adults say cashews are their favorite kind of nut. you randomly select 12 adults and ask each to name his or her favor
    13·1 answer
  • Solve the following quadratic for the values x
    5·2 answers
  • What is the equation of the line graphed below?
    8·2 answers
  • What is 5/6 as a percent rounded to the nearest hundredth
    14·1 answer
  • What is the expected value of one spin? Is it fair? Why or why not? Correct answer gets Brainliest!
    10·1 answer
  • Drag the tiles to the correct boxes to complete the pairs.
    15·1 answer
  • What is the answer?? What number replaces b? Measuring angles
    15·1 answer
  • What is an equation of the line that passes through the points (-3,-1) and (6, 2)?
    6·2 answers
  • If m∠ABF = (7x + 31)°, m∠EBF = (3x – 6)°, and m∠ABE = (12x – 9)°, find m∠ABE.
    13·1 answer
  • PLEASE I NEED THIS RN!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!