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zmey [24]
3 years ago
5

Which of the following values satisfies the inequality 9 < 2x + 7 < 15?

Mathematics
1 answer:
scZoUnD [109]3 years ago
8 0

Answer:

B. X = 2

Step-by-step explanation:

2(0)+7 = 7 --> 7<9 so no

* 2(2)+7 = 11 --> 9<11<15 so yes *

2(4)+7 = 15 --> 15 = 15 so no

2(6)+7 = 19 --> 19>15 so no

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338 is the same as 122 reduced by w written as an equation
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Step-by-step explanation:

The given statement can be expressed as:

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Tanya ran 400 meters on Tuesday and 800 on Wednesday. If she ran 16,256 meters in all, how many did she run on Thursday? Show wo
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A cable is <br> 40<br><br> meters long. How long is the cable in decimeters?
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3 years ago
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Vaselesa [24]

y = -9

Ok so to write the equation of the line you will need the slope and y-intercept. Since we are given two-point we can easily find the slope by using this equation for slope formula:

\frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

So now that we have our equation we can just plug in the numbers:

\frac{(-9)-(-9)}{5-(-3)}

After subtracting you should get:

0/8

Since zero is in the numerator and you can't divide zero by anything, the slope is 0. We still need the y-intercept for the equation however since the slope is 0 there is no need to put anything else.

Then to find the y-intercept all you have to do is plug in one of the coordinatines into the slope equation to solve, for example, using the point (5,-9):

(-9) = 5(0) + b

B is the variable for the y-intercept. Also notice how I put 0 as our slope into the equation. Now all you have to do is solve for b. Which you would get b = -9. Since you have your slope and your y-intercept now you just write out your equatoin for the line which is:

y = 0x - 9

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y = -9

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