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ch4aika [34]
2 years ago
8

13. Describe the system by substitution: y=x-7 2x - y = 3

Mathematics
1 answer:
torisob [31]2 years ago
4 0

Answer:

x = y + 7 \\  \\ x =  \frac{3 + y}{2}  \: or \: y = 2x - 3

Step-by-step explanation:

1. \: 2x = 3 + y \\ 2. \: x =  \frac{3 + y}{2}  \: or \: y = 2x - 3 \\  \\ 1. \: y + 7 = x \\ 2. \: x = y + 7

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A line with a slope of 2 passes through (3,9). Which choice is an equation of this line?
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Answer:

The answer to your question is number 3.

Step-by-step explanation:

Data

slope = m = 2

Point = (3, 9)

Process

1.- Write the equation of the line in the form point-slope

               y - y1 = m(x - x1)

2.- Identify the values of x1 and y1

        x1 = 3   y1 = 9

3.- Substitution

               y - 9 = 2(x - 3)

4.- Simplify

              y - 9 = 2x - 6

              y = 2x - 6 + 9

5.- Result

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6 0
3 years ago
Mai conducted an experiment by flipping a fair coin 200 times. The coin landed heads up 110 times. Which statement about the coi
Alexandra [31]
The experimental probability of the coin landing heads up is 110/200 = 11/20.
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3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
-3/7 greater or less than -2/5
Phantasy [73]
-3/7 is greater than -2/5


how I found this do 3÷7 and this will give you a decimal of 0.4285. While doing 2÷7 equals 0.4


hope this helps
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Answer:

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