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quester [9]
3 years ago
5

What value of X makes the equation true -7x - (-5-x) = -9(2x-1) -1

Mathematics
1 answer:
Bond [772]3 years ago
5 0

Answer:

x = 1/4

Step-by-step explanation:

-7x - (-5-x) = -9(2x-1) -1

-7x + 5 + x = -18x + 9 - 1

combine like terms:

-6x + 5 = -18x + 8

add 18x to each side of the equation:

12x + 5 = 8

subtract 5 from each side:

12x = 3

divide both sides by 12:

x = 3/12 = 1/4

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SVEN [57.7K]

Answer:

1. 5

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3 years ago
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hram777 [196]
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4 0
3 years ago
3. Write an equation for the line that is perpendicular to the given line and that passes through the given point. y = 4x + 1 (1
asambeis [7]

Answer:

D. y = -1/4x + 3

Step-by-step explanation:

If the line is perpendicular, it will have a opposite reciprocal slope.

So, the slope will be -1/4.

Plug in this slope and the given point into y = mx + b, and solve for b:

y = mx + b

-6 = -1/4(12) + b

-6 = -3 + b

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Plug in the slope and y intercept into y = mx + b

y = -1/4x - 3

So, the correct answer is D. y = -1/4x + 3

8 0
3 years ago
Read 2 more answers
C(n) = -7 + 6(n - 1)
Pavel [41]

Answer:

6n-13

Step-by-step explanation:

Since the question given is -7+6(n-1)

-7+6(n-1)

Open the bracket first

-7+6n-6

Collect like terms

-7-6+6n

-13+6n

Which can also be written as

6n-13

So C(n)=6n-13

5 0
3 years ago
Need help with the y value
Tomtit [17]

Answer: 12x

Step-by-step explanation:

The question is asking what equation models the table above. You have to make an equation that when any of the times on the left column are plugged in, the value on the right column are outputted.

For 1, the equation should output 12. For 2, the equation should output 24. For 3, the equation should output 36, and so on.

Here, we see a pattern: for every value we input as the number of seconds, the height is 12 times more than that. Assuming x is the time and y is the height,

y=12x

If we use any x on the left, it's corresponding height will be the y.

8 0
2 years ago
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