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
My name is Ann [436]
3 years ago
14

Which system of equations is consistent and dependent?

Mathematics
2 answers:
stira [4]3 years ago
5 0

Answer:

A.

Step-by-step explanation:

Took it on Edge2020 :)

MAXImum [283]3 years ago
3 0

Answer:

Step-by-step explanation:

4x − y = −11

2x + 3y = 5

lets multiply the second equation by -2 and add it to the first:

4x − y = −11

-4x - 6y = -10

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

0  - 7y = -21

y = -21/-7

y = 3

now we substitute this result in the first equation to find x:

4x − y = −11

4x - 3 = -11

4x = -8

x = -8/4

x = 2

so the solution is y = 3 and x =2

4x − 9y = −21

−10y = −30

we solve for y

−10y = −30

y = -30/-10

y = 3

and substitute in the first equation:

4x − 9y = −21

4x − 9(3) = −21

4x - 27 = -21

4x = 6

x = 6/4 = 3/2

so the solution is x = 3/2 and y = 3

4x + 3y = 5

2y = −6

we solve for y:

2y = −6

y = -6/2

y = -3

we do substitute in the first equation:

4x + 3y = 5

4x + 3(-3) = 5

4x - 9 = 5

4x = 14

x = 14/4

x = 7/2

so the solution is x = 7/2 and y = -3

7x − 3y = −11

9x = −6

we solve for x:

9x = −6

x = -6/9

x = -2/3

then we substitute in the first equation the result found:

7x − 3y = −11

7(-2/3) − 3y = −11

-14/3 - 3y = -11

we multiply by 3 to eliminate fractions:

-14 - 9y = -33

9y = 19

y = 19/9

so the solution is x = -2/3 and y = 19/9

12x − 3y = −33

14x = −28

we solve for x:

14x = −28

x = -28/14

x = -2

then we substitute in the first equation:

12x − 3y = −33

12(-2) − 3y = −33

-24 - 3y = -33

3y = 9

y = 3

then the solution is x = -2 and y = 3

You might be interested in
Write formula for arithmetic sequence when first term is not given
SashulF [63]
An<span> = am</span><span> + (n – 1)d.
i feel like this can work</span>
8 0
2 years ago
Plzz help me and don't give me a negative answer for points
LenaWriter [7]
1. No idea
2. Angle A
3. Line RT
4. NO, 4/2 = 2, 5/3 = Not 2
5.Asking someone else?
6. 6 ft.
7. 10.56, precisely
8. 90 degrees
9. 51 degrees
10. 24 ft.
4 0
3 years ago
Which angles are vertical angles?
Nadya [2.5K]

Answer:

∠8 and ∠5

Step-by-step explanation:

Vertical angles are angles that are across from each other.

∠8 and ∠5 are across from each other.

3 0
3 years ago
at old oak farm, there are chicken and horses. there are 120 legs and 48 heads altogether. how many horses and how many chickens
Karolina [17]

Answer:

24 horses and 12 chicken

7 0
2 years ago
Read 2 more answers
X2 + 3x - 108 = 0<br> What is the answer?
worty [1.4K]

Answer:

The answer is x=9 and/or x = -12

Step-by-step explanation:

This is a quadratic formula meaning that you must take the a value (1) b value (3) and the c value (108) and plug it into the quadratic formula.

\frac{-3±\sqrt{9+4*1*-108} }{2}

which simplifies to -3 add or subtract the sqrt of 441 divided by two.

5 0
3 years ago
Other questions:
  • 87% of 41 is what? ‍♀️
    7·2 answers
  • Darryl left the White House and traveled toward the ferry office at an average speed of 25 mph. Some time later Jacob left trave
    6·1 answer
  • The admission fee at an amusement park is $2.00 for children and $5.60 for adults. On a certain day, 352 people entered the park
    9·1 answer
  • 3.) Jada takes out a loan for $6000 to start a business after hig
    11·1 answer
  • At what point does the curve have maximum curvature? Y = 4ex (x, y) = what happens to the curvature as x → ∞? Κ(x) approaches as
    7·1 answer
  • A company uses a computer program to create coupon codes for customers to use on its website. The codes are made up from the sym
    14·2 answers
  • What is 6.4r-7-2.9r simplified
    7·1 answer
  • Can someone pls help me
    14·1 answer
  • HELP PLEASE !!!!!!!!!!!!!!!
    13·1 answer
  • SOMEONE PLEASE HELP ME AND MY FRIEND ARE DOING this right now
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!