1 7/3 in simplest form

Mathematics

1 answer:

MrMuchimi4 years ago

8 0

It is already in simplest form, since 17 is a prime number.

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Write down a number you can square to give an answer bigger than 700 but smaller than 800

pshichka [43]

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3 years ago

If (20,8) and (25, 10) belong to a proportional relationship, what is the constant of proportionality

Ira Lisetskai [31]

Answer:

The proportionality constant is 2/5

Step-by-step explanation:

Here, we want to get the proportionality constant

Let us view the two points as being points on a line

The constant of proportionality will be the slope of the line that connects the two points

Mathematically, we can use the formula for the slope of a line

We have this as;

m = (y2-y1)/(x2-x1)

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(x2,y2)= (25,10)

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Answer:

Step-by-step explanation:

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3 years ago

The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 270 day

dusya [7]

Answer:

a) 281 days.

b) 255 days

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 270, \sigma = 8$