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3 years ago

A piece of wood weighing 10 ounces is found to have of 8 ounces after drying . The moisture content was

Mathematics

1 answer:

ollegr [7]3 years ago

8 0

20%, I believe. The piece of wood lost 2 ounces of moisture after drying, and 2/10 = 20/100

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What is the median of this data set<br> 71,37,22,81,65,54,52,41,48,71

Anna007 [38]

Answer:

54.2

Step-by-step explanation:

add them all up then divide by the total amount of number there are

5 0

3 years ago

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form

amid [387]

Answer:

$12.43

Step-by-step explanation:

Given :

Mean = $8.52

Standard deviation, = $2.38

Stock price which falls beyond 0.05 of the distribution is at the 95th percentile

The 95th percentile distribution has a Pvalue of 1.645 (standard normal table)

We obtain the value of x, with z = 1.645

Using the Zscore relation :

Zscore = (score - mean) / standard deviation

1.645 = (score - 8.52) / 2.38

Cross multiply :

1.645 * 2.38 = score - 8.52

3.9151 = score - 8.52

Score = 8.52 + 3.9151

Score = $12.4351

Stock price beyond 0.05 is $12.43

8 0

3 years ago

Can someone help quickly plz

Ira Lisetskai [31]

We have that

using a graph tool
see the attached figure

the answer is the first option
y<=3x
y>-2x-1

7 0

3 years ago

Help! will give points for brainliest

Yakvenalex [24]

Answer:

-6, -1, 4, 9, and 14

Step-by-step explanation:

Just add 5 to each of them

8 0

3 years ago

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WILL GIVE BRAINLIEST!!! Given tan(theta) = 4/3 and pi < theta < (3pi)/2, find cos(2theta).

babymother [125]

Answer: $\cos 2 \theta = \dfrac{-7}{25}$

Step-by-step explanation:

Given: $\tan \theta = \dfrac{4}{3}$ and $\pi < \theta< \dfrac{3\pi }{2}$

To find: $\cos 2 \theta$

Now as we know

$\cos 2x = \dfrac{1- \tan ^2 x}{1+ \tan ^2 x}$

So we have

$\cos 2 \theta = \dfrac{1-(\dfrac{4}{3} )^2}{1+(\dfrac{4}{3} )^2} \\\\\Rightarrow \cos 2 \theta = \dfrac{1- \dfrac{16}{9} }{1+ \dfrac{16}{9} } = \dfrac{\dfrac{9-16}{9} }{\dfrac{9+16}{9}} = \dfrac{-7}{25}$

Therefore d. is the correct option

Hence , $\cos 2 \theta = \dfrac{-7}{25}$

3 0

3 years ago

Read 2 more answers