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Brut [27]
1 year ago
13

Solve the system of equations using elimination. How many solutions does the system have?

Mathematics
1 answer:
Mariana [72]1 year ago
7 0

Answer:

  infinite solutions

Step-by-step explanation:

The coefficient of x in the first equation is 3 times the coefficient of x in the second equation. This means we can eliminate x by subtracting 3 times the second equation from the first:

  (15x +12y) -3(5x +4y) = (18) -3(6)

  0 = 0 . . . . . simplify (true for all values of x or y)

The system of equations has an infinite number of solutions.

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Plz help, I don't know how to do this
exis [7]
Once you complete the square the equation is (x+3)^2 + (y - 8)^2 = 64
The center is (-3,8)
Radius is 8
A. False
B. True
C. False
3 0
3 years ago
Under her cell phone plan, Sarah pays a flat cost of $69 per month and $4 per gigabyte. She wants to keep her bill at $83.80 per
zalisa [80]

Using a linear function, it is found that Sarah can use 3.7 gigabytes while staying within her budget.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

Considering the flat cost as the y-intercept and the cost per gigabyte as the slope, the cost of using g gigabytes is:

C(g) = 4g + 69.

She wants to keep her bill at $83.80 per month, hence:

C(g) = 83.80

4g + 69 = 83.80

4g = 14.80

g = 14.80/4

g = 3.7.

Sarah can use 3.7 gigabytes while staying within her budget.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

7 0
2 years ago
If you reflect (–2, –8) across both axes, which quadrant will it be in?
Lesechka [4]
The quadrant that it will be in is one
6 0
3 years ago
Read 2 more answers
All parbolas with vertical directrix open to the left or right<br> True or false
Alborosie
True!

all parabolas with vertical directrix DO open to the left/right.
8 0
3 years ago
25. Which of the following is equivalent to: 7 2 x 7-4
MissTica

Answer:

It's D or 1/7^2

\frac{1}{7^{2} }

Step-by-step explanation:

They both equal 1/49

3 0
3 years ago
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