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Irina18 [472]
4 years ago
14

Francine solves the system of equations using the linear combination method.

Mathematics
2 answers:
k0ka [10]4 years ago
6 0
<span>
C is the correct answer.</span><span>
</span>

vaieri [72.5K]4 years ago
6 0

Answer:

Multiply 4x+3y=−1 by 3. Multiply 3x−5y=4 by −4 . Add the resulting equations together.

Step-by-step explanation:

Given the simultaneous equation below:

4x+3y=−1 ...(1) × 3

3x−5y=4 ...(2) × -4

Using elimination method to solve the problem,

Before we can eliminate x, the coefficient of x in both equation must have similar whole number as coefficient.

To make the coefficient equal, we will multiply equation 1 by 3 and equation 2 by -4 as shown above

The equations will then become

12x+9y = -3

-12x+20y = -16

Then we will add the resulting simultaneous equations.

The steps that would allow her to eliminate the x terms in the system of equations is to "Multiply 4x+3y=−1 by 3. Multiply 3x−5y=4 by −4 . Add the resulting equations together"

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Lisa has developed a new product, and knows that the graph of function R models her revenue from selling the item, after deducti
Eva8 [605]

Answer:

Choice B is correct;  (10, 60)

Step-by-step explanation:

For Lisa to make a profit, the function R should assume a value greater than 0;

R > 0

We are to determine the interval of x values for which the above expression will be true.

From the graph, R(x) = 0 when x = 10. As x increases from 10 to 60, the value of R(x) remains positive, that is;

R(x) ≥ 0 for values of x in the interval (10, 60)

The domain that she should use in order to only model selling prices for which she will make a profit is thus;

(10, 60)

6 0
4 years ago
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What is the slope of the line that contains the points (-2,5) and (6, -3)?
mel-nik [20]

Answer:

-1

Step-by-step explanation:

Attached is a picture of slope formula:

1) Apply slope formula given two points:

(5--3)/(-2-6)

2) Simplify:

8/-8

3) Divide:

-1

3 0
3 years ago
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Which equation, when solved, results in a different value of x than the other three?
Damm [24]

Answer:

i think it might be c

Step-by-step explanation:

tell me if its wrong or not and brain list please

3 0
3 years ago
These are the last ones
Phantasy [73]

Answer:

9)  p = 48

10)  a = 3.6

Step-by-step explanation:

9)  p/8 + 3 = 9

p/8 = 6

p = 48

10) 12a/4 + 18/3 = 20.4

4a + 6 = 20.4

4a = 14.4

a = 3.6

7 0
3 years ago
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20/256 Simplified. I need this answer. Will give brainliest
sasho [114]

Answer:

5/64

Step-by-step explanation:

20/256

10/128

5/64

7 0
3 years ago
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