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PilotLPTM [1.2K]
3 years ago
6

Using the linear combination method, what is the solution to the system of linear equations 7x-2y=-20 and

Mathematics
1 answer:
marissa [1.9K]3 years ago
5 0

Answer:

7x -2y + 20 =0 and 9x + 4y + 6 =0 are the solutions to the answer

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Help me please will give points
ehidna [41]
Answer: 675

m represents the time she has been paying. And B represents how much she owed.
So to find how much she owed at the beginning, when no time had passed, we need to set m equal to zero.

When m is zero, the equation is
B = -100(0) + 675
B= 675

So 675 is how much she owed at the beginning of the year.
7 0
3 years ago
Kelly tells you that when variables are in the denominator, the equation one over two plus three over x equals three over four b
serg [7]
1/2+3/x = 3/4
3/x = 3/4 - 1/2
3/x = 3/4 - 2/4
3/x = 1/4
12 = x

the denominator are not 0 and still can solve it with a value of 12
7 0
3 years ago
Explain why the equations X - 13 = 4 and 13 - X = 4 do NOT have the same solution.
Aloiza [94]

Answer:

they have different answers

Step-by-step explanation:

X - 13 = 4 and 13 - X = 4

for x- 13 = 4

x=4+13=17

x=17

for 13 - x = 4

13-4-x=0

9-x=0

9=x

x=9

6 0
2 years ago
Help with this I don't know how to solve please please please!!
likoan [24]

Answer:

212.5

Step-by-step explanation:

Here's a theorem about triangle areas.

If two similar triangles have sides in the ratio x:y,

then their areas are in the ratio x2:y2

The triangles have sides in the ratio:

LP/LN = 10/25

The two triangles have areas in the ratio 100:625 (4/25)

For every 4 in the small triangle, there are 25 in the larger triangle.

34/4 = 8.5

25 times 8.5 =212.5

6 0
3 years ago
A juice shop needed 360 oranges to make 40 L of fresh-squeezed juice.
hoa [83]
D. 540

360/40=9
9•60=540
5 0
3 years ago
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