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2 years ago

Help me pls its hard for me atleast

Mathematics

2 answers:

Trava [24]2 years ago

8 0

Answer:

( $12$ ) pastries in one hour.

Step-by-step explanation:

This problem involved the concept of rates. A rate is a way of expressing the amount of work done compared to the amount of time it took, to find the pace at which one does the work. To express a rate, the general format used is: ( $work:time$ )

Substitute in the given values:

$30:2.5$

In the problem, one is asked to find how many pastries can be made in one hour. To find this value, divide the rate by (2.5). This will leave (1) on the time side, and the amount of work done on the (work) side.

$30:2.5$

$12:1$

( $12$ ) pastries in one hour.

QveST [7]2 years ago

3 0

Answer:

the awnser is 12 because you have to divide

Step-by-step explanation:

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The class scores of a history test have a normal distribution with a mean Mu = 79 and a standard deviation Sigma = 7. If Opal’s

storchak [24]

The value of z score for the history class test of Opal’s test score is negative one (-1).

<h3>What is normally distributed data?</h3>

Normally distributed data is the distribution of probability which is symmetric about the mean.

The mean of the data is the average value of the given data. The standard deviation of the data is the half of the difference of the highest value and mean of the data set.

The z score for the normal distributed data can be given as,

$Z=\dfrac{X-\mu}{\sigma}$

The mean value of the scores of history class is,

$\mu=79$

The standard deviation value of the scores of history class is,

$\sigma=7$

Here, the test score of the Opal’s is 72. Thus the z score for her test score can be given as,

$z=\dfrac{72-79}{7}\\z=-1$

Hence, the value of z score for the history class test of Opal’s test score is negative one (-1).

Learn more about the normally distributed data here;

brainly.com/question/6587992

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2 years ago

What is 0.386,0.3,0.683,0.836 from greatest to least

Ymorist [56]

Answer:0.3, 0.386,0.683,0.836

Step-by-step explanation:

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3 years ago

Read 2 more answers

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klasskru [66]

Answer:

Step-by-step explanation:

|3x+12|

one is as it is one is the negative value of it

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That is because both negative and positive values put in am absolute value become positive.

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2 years ago

Upper Deck $9.25

Elena-2011 [213]

Answer:

Step-by-step explanation:

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3 years ago

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Help!! 50 points and brainliest!

Viktor [21]

Answer:

Second choice:

$x=2t$

$y=4t^2+4t-3$

Fifth choice:

$x=t+1$

$y=t^2+4t$

Step-by-step explanation:

Let's look at choice 1.

$x=t+1$

$y=t^2+2t$

I'm going to subtract 1 on both sides for the first equation giving me $x-1=t$ . I will replace the $t$ in the second equation with this substitution from equation 1.