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3 years ago

There are 180 pages in the book Diana is reading. Diana has read 90 pages. What percent of the book has she read?

Mathematics

2 answers:

Sedbober [7]3 years ago

8 0

50% is the amount she read.

dimulka [17.4K]3 years ago

5 0

The answer is fifty percent.

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www.g The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulb

damaskus [11]

Answer:

$z=\frac{24-40}{8}=-2$

$z=\frac{40-40}{8}=0$

And then the percentage between 24 and 40 would be $\frac{95}{2}= 47.5 \%$

Step-by-step explanation:

For this problem we have the following parameters given:

$\mu = 40, \sigma =8$

And for this case we want to find the percentage of lightbulb replacement requests numbering between 24 and 40.

From the empirical rule we know that we have 68% of the values within one deviation from the mean, 95% of the values within 2 deviations and 99.7% within 3 deviations.

We can find the number of deviations from themean for the limits with the z score formula we got:

$z=\frac{X-\mu}{\sigma}$

And replacing we got:

$z=\frac{24-40}{8}=-2$

$z=\frac{40-40}{8}=0$

And then the percentage between 24 and 40 would be $\frac{95}{2}= 47.5 \%$

5 0

3 years ago

Last year, Mary's vegetable garden was a rectangle that measured 6 ft by 8 ft.

Bess [88]

Answer:

12 ft

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What are the attributes for this shape

stich3 [128]

All of the shown choices, also every opposite angles are equal.

6 0

3 years ago

Help me solve thanks

Inessa [10]

Answer is (A) x < 14/5
(B) x < -21/4

7 0

3 years ago

Probability ----------------

NISA [10]

Step-by-step explanation:

P(W^c) = 1-3/5

=5-3/5 =2/5

6 0

4 years ago