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Arte-miy333 [17]

3 years ago

14

Nate uses 8 square tiles to make a design in art class. Each tile is the same size and shape. What fraction of the total area of

the design is each tile?

1 answer:

Vsevolod [243]3 years ago

8 0

Each tile represents 1/8 of the total design area.

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your classroom received 150 books. You are placing them in bins. Each bin holds 20 books. How man bins do you need?

Serhud [2]

You will need 7 because 150 divided by 20 is 7

7 0

3 years ago

Read 2 more answers

The low temperature last month was<br> -5˚F. What is the absolute value of -5?

solong [7]

5

The reason is because |-5| is equal to 5. The absolute value bars make the number positive.

4 0

3 years ago

Find and interpret the mean absolute deviation of the data. $4.6,8.5,7.2,6.6,5.1,6.2,8.1,10.3$4.6,8.5,7.2,6.6,5.1,6.2,8.1,10.3

trasher [3.6K]

Answer:

1.3845

Step-by-step explanation:

i used this formula in the screenshot

and you can also try using calculator websites

3 0

3 years ago

If a light bulb manufacturing company wants to estimate, with 99% confidence, the mean life of compact fluorescent light bulb

Reptile [31]

Answer:

We need at least 217 compact fluorescent light bulbs

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many compact fluorescent light bulbs need to be selected?

We need at least n bulbs, in which n is found when $M = 175, \sigma = 1000$

So

$M = z*\frac{\sigma}{\sqrt{n}}$

$175 = 2.575*\frac{1000}{\sqrt{n}}$

$175\sqrt{n} = 2575$

$\sqrt{n} = \frac{2575}{175}$

$\sqrt{n} = 14.71$

$\sqrt{n}^{2} = (14.71)^{2}$

$n = 216.5$

We need at least 217 compact fluorescent light bulbs

4 0

4 years ago

Read 2 more answers

A ticket to a sporting event cost 9.25 write the expression to represent the cost for t number of tickets and the cost for 23 ti

NeTakaya

T(x)= 9.25x
t(23)=212.75

5 0

3 years ago