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2 years ago

Find a number if: 3/7 of it is 2 1/14

Mathematics

2 answers:

pashok25 [27]2 years ago

8 0

Answer:

n = 2 1/14

Step-by-step explanation:

You have the equation (3/7)n = 2 1/14 and need to find the value of n.

First rewrite 2 1/14 as the improper fraction 29/14:

(3/7)n = 29/14. Here the LCD is 14, so multiply both sides of this equation by that:

14(3/7)n = 14(29/14) = 29. Simplifying this further, we get 6n = 29, so that:

n = 29/14, or n = 2 1/14

mina [271]2 years ago

6 0

Answer:

49 7/12

Step-by-step explanation:

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andrezito [222]

Machine J's equation would be 30x=y. To find out how many more candies Machine J packets, You would plug in 11 as x and you would get 330.
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Now you would subtract. 330-286=44.

7 0

3 years ago

A decimal that would be more than a half

Reika [66]

Answer:

So basically anything higher than .5 would be x>.5 so it has to be greater than or equal to .51

Step-by-step explanation:

.51 .75 .89 .56 .78 .86 .61 it goes on and on as long as it is greater than .50

4 0

2 years ago

What is the answer to this?

GuDViN [60]

Answer:

$< 1 = 48$

Step-by-step explanation:

$< 1 + 132 = 180$

$< 1 = 180 - 132$

$< 1 = 48$

because it's a straight angle(180)

5 0

2 years ago

I rlly need help with this :(

kobusy [5.1K]

Using the normal distribution, it is found that:

a) The pilot is at the 72th percentile.

b) 19.13% of pilots are unable to fly.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

$\mu = 72.6, \sigma = 2.7$ .

Item a:

The percentile is the <u>p-value of Z when X = 74.2</u>, hence:

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

$Z = \frac{74.2 - 72.6}{2.7}$

Z = 0.59

Z = 0.59 has a p-value of 0.7224.

72th percentile.

Item b:

The proportion that is able to fly is the <u>p-value of Z when X = 78 subtracted by the p-value of Z when X = 70</u>, hence:

X = 78:

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

$Z = \frac{78 - 72.6}{2.7}$

Z = 2

Z = 2 has a p-value of 0.9772.

X = 70:

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

$Z = \frac{70 - 72.6}{2.7}$

Z = -0.96

Z = -0.96 has a p-value of 0.1685.

0.9772 - 0.1685 = 0.8087 = 80.87%.

Hence the percentage that is unable to fly is:

100 - 80.87 = 19.13%.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0

2 years ago

13 out of 60 people surveyed what angle in a pie chart would you use?

FromTheMoon [43]

In a survey with 60 people, each people would get 1/60th of the chart which has 360 degrees, so everyone would get 360/60=6 degrees

and 13 people would get 13*6=78 degrees!

8 0

3 years ago