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3 years ago

Solve 7 over n equals x over 3

1 answer:

4 0

Oh, this is very easy! Here, I'll explain it to you. This type of problem is trying to find a proportion. A proportion is two ratios that are equivalent to one other, where the means are equivalent to the means, and the extremes are equivalent to the extremes. What are those you may ask? Well, here are two sets of ratios: 3:15 and 18:6
Remember that ratios could be written as a fraction form, so they would also look like this: 3/15 and 18/6
So, now, there are the means, which would be 15 and 18, because they are on opposite positions, (15 is the denominator, and 18 is the numerator, and the denominator and numerator are opposite positions).
The best way I remember it is to first write the ratio from a fraction version to the semi colon version. (3:15 and 18:6). You see how 15 and 18 are close to each other? Those numbers are called the means. Now 3 and 6 are on the opposite sides, which are called the extremes. You could also remember extremes as "extremely far from each other". So, in order to see if they are equal to one-another, you must multiply the means by the means, (15 times 18), which would be 270, and now we have to multiply the extremes by the extremes, (3 times 6), which would be 18. Now we have to see if our answers from the means and extremes are the same. 270 and 18 are NOT the same numbers, (the same numbers would be 270 and 270, or 18 and 18), so we could say that they are NOT proportional. Now, to solve 7/n and x/3. we have to first put it in semi colon form, which would be 7:n and x:3. The next step is to multiply the extremes first, because they are the actual numbers we have. 7 times 3 equals 21, so now we must make the means' answer the same. We could do 7:21 and 1:3, because 21 times 1 equals 21, which is the same answer as 21, (21 is the extremes' answer). Now they are proportional, (proportional also means equal), and we have solved this problem. Well done following along the way, and I hope I helped! :-)

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Lena [83]

Answer:

m<B = 141 degrees

Step-by-step explanation:

This shape is a heptagon meaning its angles should have a sum of 900 degrees.

we are given the degrees and we need to ad them up

148+90+120+129+130+142=749

then we subtract 749 from 900 which looks like

900-749=141

from subtracting 749 from 900 we get 141 hence we get our answer that m<B = 141 degrees

5 0

2 years ago

Consider the terms pyramid, line, square, and triangle. The term-----

neonofarm [45]

Answer:

Pyramid

Step-by-step explanation:

Read through Euclid's "Elements" to find, if possible, the word.

8 0

3 years ago

Read 2 more answers

>>>>>>>>> Use graphs and tables to find the limit and identify any vertical asymptotes of the functio

Fiesta28 [93]

Answer:

Step-by-step explanation:

as you can see something amazing happens in 10 in this function . If you replace x with 10 you get 1/0 wich an indetermined form in Mathematics.

Now we are sure that there is a vertical asymptote in 10. Let's see identify the limit in the left of 10.

let's assign some values to x that are smaller than 10.

1. x=9

1/(9-10)= -1

a negative value

2. x=8

1/(8-10)= -1/2

a negative value

let try a reallu colse value to 10 like 9.99

1/(9.99-10)=-100

a negative value

so we can deduce that the limit is -∞

lim [1/(x-10)]=-∞

x→10-

7 0

3 years ago

Which statements are true? Select all that apply. If a line segment is divided into smaller adjacent segments, the sum of the le

Licemer1 [7]

Answer:

yes

Step-by-step explanation: yes yes yes ye sy ey eys eys yes

4 0

3 years ago

A researcher wants to know how professional athletes in her city feel about safety measures. She obtains a list of 952 professio

mojhsa [17]

Answer:

For this case the population represent all the professional athletes in the researcher city and we can assume that the sample size for tis population is N =982 and represent all the individuals of interest for the study and the parameter of interest is the proportion of athletes who believe that the enforcement of safety measures needs to be completely overhauled $p$ .

In order to estimate te parameters of the population the researcher select a sample of 400 professional athletes and just 86 of them returns the questionnaire sent. So then the real sample is the n =86 people who return the info, because the other people are part of the non response rate, and from this sample she found that the proportion of athletes who believe that the enforcement of safety measures needs to be completely overhauled is $\hat p=0.76$ .

Step-by-step explanation:

For this case the population represent all the professional athletes in the researcher city and we can assume that the sample size for tis population is N =982 and represent all the individuals of interest for the study and the parameter of interest is the proportion of athletes who believe that the enforcement of safety measures needs to be completely overhauled $p$ .

In order to estimate te parameters of the population the researcher select a sample of 400 professional athletes and just 86 of them returns the questionnaire sent. So then the real sample is the n =86 people who return the info, because the other people are part of the non response rate, and from this sample she found that the proportion of athletes who believe that the enforcement of safety measures needs to be completely overhauled is $\hat p=0.76$ .

6 0

3 years ago