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WINSTONCH [101]

3 years ago

6

Solve the following equations for x -11=3-7(x-1)

2 answers:

Neporo4naja [7]3 years ago

8 0

Answer:

x = 21/8

Step-by-step explanation:

x - 11 = 3 - 7x + 7

8x = 21

x = 21/8

lesya692 [45]3 years ago

3 0

Answer:

x = 21/8

Step-by-step explanation:

Step 1: Write equation

x - 11 = 3 - 7(x - 1)

Step 2: Solve for <em>x</em>

<u>Distribute -7:</u> x - 11 = 3 - 7x + 7

<u>Combine like terms:</u> x - 11 = 10 - 7x

<u>Add 7x on both sides:</u> 8x - 11 = 10

<u>Add 11 on both sides:</u> 8x = 21

<u>Divide both sides by 8:</u> x = 21/8

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WINSTONCH [101]

Answer:

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Step-by-step explanation:

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3 years ago

Find the slope-intercept form of the equation that passes through the points (3, -4) and (1, 2)

quester [9]

Answer:

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Step-by-step explanation:

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3 years ago

Marla is driving a remote control boat at the carnival. She puts quarters into a machine to get more minutes of driving time. Wh

Andre45 [30]

Answer:

Option C is the 3rd picture

see the attached figure

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

Let

x ----> the number of quarters

y ----> the number of minutes

we know that

$k=y/x$

<u><em>Verify each table</em></u>

<em>First table</em>

For x=1, y=5 ----> $k=5/1=5$

For x=3, y=7 ----> $k=7/3=2.3$

For x=5, y=10 ----> $k=10/5=2$

The values of k are different

therefore

This table not shows a proportional relationship between the number of quarters and the number of minutes

<em>Second table</em>

For x=2, y=5 ----> $k=5/2=2.5$

For x=3, y=8 ----> $k=8/3=2.7$

For x=4, y=16 ----> $k=16/4=4$

The values of k are different

therefore

This table not shows a proportional relationship between the number of quarters and the number of minutes

<em>Third table</em>

For x=2, y=10 ----> $k=10/2=5$

For x=5, y=25 ----> $k=25/5=5$

For x=7, y=35 ----> $k=35/7=5$

The value of k=5

therefore

This table shows a proportional relationship between the number of quarters and the number of minutes

<em>Fourth table</em>

For x=4, y=8 ----> $k=8/4=2$

For x=8, y=18 ----> $k=18/8=2.25$

For x=12, y=28 ----> $k=28/12=2.3$

The values of k are different

therefore

This table not shows a proportional relationship between the number of quarters and the number of minutes

7 0

4 years ago