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Olegator [25]
3 years ago
15

This is solving systems by substituting y=-2x+5 3y=-x-5

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
7 0

Answer:

y = - 3

Step-by-step explanation:

3(-2x+5)=-x-5

-6x+15=-x-5

-5x=-20

x=4

y=-2(4)+5

y=-3

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PLEASE HELP !!!!!!!!Solve the system of equations using the linear combination method.
vfiekz [6]

Answer:

The solution would be (5, -2)

Step-by-step explanation:

To use this method, start by multiplying the second equation by -1. Then add the two equations together.

9x + 5y = 35

-2x - 5y = 0

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7x = 35

x = 5

Now that we have the value of x, use it to solve either equation for y.

2x + 5y = 0

2(5) + 5y = 0

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6 0
3 years ago
HELPP PLEASE ASAP Use the Pythagorean theorem to find the missing length in the right triangle
qwelly [4]

Answer:

c = 10

Step-by-step explanation:

The pythagoras theorem :

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3 0
2 years ago
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2 years ago
Write an equation in slope-intercept form of the line that passes through (−5, 19) and (5, 13)
kotykmax [81]
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6 0
2 years ago
There is a total of 270 men, women and children on a train.
ryzh [129]

Because the ratio of women to children is 10:1, double the ratio of men to women so the women are both 10:

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Now total the 3 ratios: 8 for men, 10, for women and 9 for children:

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Multiply 10 by each ratio:

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6 0
3 years ago
Read 2 more answers
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