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Ratling [72]
3 years ago
8

Write 2 equivalent names for 2/3

Mathematics
2 answers:
Gala2k [10]3 years ago
5 0

Answer:

Step-by-step explanation:

14/16 or 7/8

SOVA2 [1]3 years ago
3 0
4/6,6/12,12/24,and 25/48 sorry I put to much because I have lots of the fraction you must do 2/3 times 2 or any number thank you
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-5x+8=18 its a two step equation and I need to know whether its a identity, one solution or no solution problem​
Oksi-84 [34.3K]

Answer:

-2

Step-by-step explanation:

- 5x + 8 = 18

Take + 8 to the right hand side, it turns negative i.e -8

-5x         = 18 - 8

-5x         = 10

Divide both sides by the coefficient of x which is -5  

-5x/5          = 10/-5

x = -2

7 0
2 years ago
Assume that foot lengths of women are normally distributed with a mean of 9.6 in and a standard deviation of 0.5 in.a. Find the
Makovka662 [10]

Answer:

a) 78.81% probability that a randomly selected woman has a foot length less than 10.0 in.

b) 78.74% probability that a randomly selected woman has a foot length between 8.0 in and 10.0 in.

c) 2.28% probability that 25 women have foot lengths with a mean greater than 9.8 in.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}.

Normal probability distribution

Problems of normally distributed samples can be 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 = 9.6, \sigma = 0.5.

a. Find the probability that a randomly selected woman has a foot length less than 10.0 in

This probability is the pvalue of Z when X = 10.

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

Z = \frac{10 - 9.6}{0.5}

Z = 0.8

Z = 0.8 has a pvalue of 0.7881.

So there is a 78.81% probability that a randomly selected woman has a foot length less than 10.0 in.

b. Find the probability that a randomly selected woman has a foot length between 8.0 in and 10.0 in.

This is the pvalue of Z when X = 10 subtracted by the pvalue of Z when X = 8.

When X = 10, Z has a pvalue of 0.7881.

For X = 8:

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

Z = \frac{8 - 9.6}{0.5}

Z = -3.2

Z = -3.2 has a pvalue of 0.0007.

So there is a 0.7881 - 0.0007 = 0.7874 = 78.74% probability that a randomly selected woman has a foot length between 8.0 in and 10.0 in.

c. Find the probability that 25 women have foot lengths with a mean greater than 9.8 in.

Now we have n = 25, s = \frac{0.5}{\sqrt{25}} = 0.1.

This probability is 1 subtracted by the pvalue of Z when X = 9.8. So:

Z = \frac{X - \mu}{s}

Z = \frac{9.8 - 9.6}{0.1}

Z = 2

Z = 2 has a pvalue of 0.9772.

There is a 1-0.9772 = 0.0228 = 2.28% probability that 25 women have foot lengths with a mean greater than 9.8 in.

5 0
3 years ago
1/3(12x-24)=16 answer
mafiozo [28]

Answer:

x = 6

Step-by-step explanation:

4 0
3 years ago
A circle has a radius of 8 cm. What is its area?<br><br> Use <img src="https://tex.z-dn.net/?f=%20%5Cpi%20" id="TexFormula1" tit
jekas [21]
The formula for the area of the circle is:
Area=  \pi r^{2}
All you have to do is plug in 8 for r :)
7 0
3 years ago
3/5 of 3 1/4 is<br> ( Thx for the answer :) )
Readme [11.4K]

Answer:

Step-by-step explanation:

1.95 is the correct answer

8 0
3 years ago
Read 2 more answers
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