What is the reciprocal of 3 3/7?

Mathematics

2 answers:

tangare [24]3 years ago

8 0

27/7 is the correct answer

hjlf3 years ago

5 0

That is what I am doing in school too

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What is a radius of a circle given by the equation x²-2x+8y-47=0

Zolol [24]

First, we are going to rewrite it as a parabola equation.
Rewrite.
$8y=-x^2+2x+47$
Divide by 8.
$y=-\frac{x^2}{8}+\frac{x}{4}+\frac{47}{8}$
Factor out coefficient.
$y=-\frac{1}{8}\left(x^2-2x\right)+\frac{47}{8}$
Then, we are going to convert x into square form.
$y=-\frac{1}{8}\left(x^2-2x+1\right)+\frac{1}{8}\cdot \:1+\frac{47}{8}$
Convert the whole expression into square form.
$y=-\frac{1}{8}\left(x-1\right)^2+\frac{1}{8}\cdot \:1+\frac{47}{8}$
Simplify.
$y=-\frac{1}{8}\left(x-1\right)^2+6$
Subtract 6 from both sides.
$y-6=-\frac{1}{8}\left(x-1\right)^2$
Divide by coefficient.
$-8\left(y-6\right)=\left(x-1\right)^2$
Rewrite in standard form.
$4\left(-2\right)\left(y-6\right)=\left(x-1\right)^2$

The radius of the circle will be -2. Also, no matter what the sign says, the radius has to always be positive.
Have a nice day! :)

7 0

3 years ago

Read 2 more answers

A piece of work can be completed by 45 men in 90 days if only 30 men are available, how many days will it take to complete the s

andrew-mc [135]

Answer:

135 days

Step-by-step explanation:

Often, we measure work in man·days. This piece of work requires ...

(45 man)·(90 days) = 4050 man·days

When there are only 30 men, the number of days required can be found by dividing this work by the number of men:

4050 man·days/(30 man) = 135 days

_____

Another approach is to realize the time is inversely proportional to the number of men. If the number of men is 30/45 = 2/3 the original, then the time will be 3/2 the original, or ...

(3/2)·90 days = 135 days.

7 0

3 years ago

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Valorie made four times more baskets than her brother, Vance.

Ghella [55]

Valorie made 60 shots which is equal to 60=4n
Divide by four on both sides of the equal sign to get n=15
Vance made 15 shots

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3 years ago

80 books to 64 books percent of change

Alecsey [184]

Answer: