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xxTIMURxx [149]
2 years ago
12

Thank you!!!!!!!!!!!!!

Mathematics
1 answer:
SashulF [63]2 years ago
4 0

Answer:

y=\frac{4}{3}x+7

Step-by-step explanation:

y=-\frac{3}{4}x+1

Points: (12, 9)

Slope (m⊥): \frac{4}{3}

y=\frac{4}{3}x+b

9 = \frac{4}{3}(12)+b

9 = 16 + b

b = 7

y=\frac{4}{3}x+7

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Step-by-step explanation:im not good at long answers but it should push each other away.

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Step-by-step explanation:

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Which choice is equivalent to √10*√5?<br> A. 5√2<br> B. 25√2<br> C. 5√10<br> D. 2√5
DanielleElmas [232]

Answer: 5\sqrt{2}

Step-by-step explanation:

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3 years ago
Demi has 221 songs on her phone. The songs take up 884 megabytes of storage . Each song takes up same amount of space . How many
sveticcg [70]

Answer:

540 megabytes

Step-by-step explanation:

We will first need to find out how much space a<em> singular song</em> will take up. We will do this by <em>the storage taken up (884) by the number of songs she has:</em>

884 / 221 = 4 mb taken up per song

Then we want to find out how many megabytes <em>135 of these songs take up</em>, so we will multiply the <em>mb taken up per song (4) by the number of songs we want to find (135)</em>:

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<em />

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7 0
3 years ago
The number of potholes in any given 1-mile stretch of freeway pavement in Pennsylvania has a Normal distribution. This distribut
Iteru [2.4K]

Answer:

83.85% of 1-mile long roadways with potholes numbering between 22 and 58

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 49

Standard deviation = 9

Using the Empirical Rule, what is the approximate percentage of 1-mile long roadways with potholes numbering between 22 and 58?

22 = 49 - 3*9

So 22 is three standard deviations below the mean.

Since the normal distribution is symmetric, 50% of the measures are below the mean and 50% are above the mean.

Of those 50% which are below the mean, 99.7% of those are within 3 standard deviations of the mean, that is, greater than 22.

58 = 49 + 9

So 58 is one standard deviation of the mean.

Of those which are above the mean, 68% are within 1 standard deviation of the mean, that is, lesser than 58.

Then

0.997*0.5 + 0.68*0.5 = 0.8385 = 83.85%

83.85% of 1-mile long roadways with potholes numbering between 22 and 58

5 0
3 years ago
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