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4 years ago

On Tuesday Shayna bought seven boxes.

Mathematics

1 answer:

Aleksandr [31]4 years ago

7 0

Answer:

Step-by-step explanation:

Work backwards

21x2=42

42-7=35

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Kayla wants to put a wallpaper border around her rectangular room. Her room is 12 feet long and 9 feet wide the wallpaper border

Dominik [7]

12 times 2 + 9 times 2 = 24 + 18 = 42 divided by 16 = 2.625

6 0

3 years ago

Read 2 more answers

A number from 1 to 25 is chosen at random what is probability of choosing a factor of 10 , an even number or a 7, a smaller numb

Ahat [919]

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3 years ago

When Noah goes bowling, his scores are normally distributed with a mean of 150 and a standard deviation of 12. What is the proba

Zarrin [17]

Answer:

The probability of his score being between 135 and 167 is 0.8151 or (0.8151*100=81.51%)

Step-by-step explanation:

Given that:

Mean = μ = 150

SD = σ = 12

Let x1 be the first data point and x2 the second data point

We have to find the z-scores for both data points

x1 = 135

x2 = 167

So,

$z_1 = \frac{x_1-mean}{SD}\\= \frac{135-150}{12}\\=\frac{-15}{12}\\=-1.25$

And

$z_2 = \frac{x_2-mean}{SD}\\z_2 =\frac{167-150}{12}\\=\frac{17}{12}\\= {1.416}$

We have to find area to the left of both points then their difference to find the probability.

So,

Area to the left of z1 = 0.1056

Area to the left of z2 = 0.9207

Probability to score between 135 and 167 = z2-z1 = 0.9027-0.1056 = 0.8151

Hence,

The probability of his score being between 135 and 167 is 0.8151 or (0.8151*100=81.51%)

3 0

3 years ago

6x - 4 = 16

Juli2301 [7.4K]

Hello!

Answer:

x=10/3

Step-by-step explanation:

First you want start by adding 4 to both sides

6x-4+4=16+4

6x=20

Then divide 6 to both sides,

6x/6=20/6

x= 10/3

Hope this helps! :)

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3 years ago

Write an equation for the function graphed above.

Rus_ich [418]

Where is the graph ??

Please provide the graph so that we can answer your questions ....

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3 years ago