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3 years ago

What is the answer and steps to 3 divided by 2/5

2 answers:

5 0

3 divided by 2/5

you do the reciprocal of 2/5 which is now 5/2

after that you multiply 3 times the 5/2

multiply the numerators which is 3 x 5 and get 15

then multiply the denominators which is 1 x 2

you are left with 15/2 after and if you want a decimal it is 7.5

il63 [147K]3 years ago

4 0

3 divided by 2/5 is 15/2

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in a circle a 60 degree sector has an area of 25 pie square feet. what is the circumference of he circle?

-BARSIC- [3]

C=2π√150 ft
Or, C≈76.95 ft

Comment if you want to see how I did this.

8 0

4 years ago

In the 7th grade, 165 students ride the bus to school. If there are 250 students in 7th grade, what percent rides the bus? Pleas

castortr0y [4]

Answer:

66 Percent of students rides the bus to school, which is approx 1/3 lol

Step-by-step explanation:

Have a nice day

5 0

3 years ago

10 2/6 - 7 5/6 i know its prob easy but i need help

miv72 [106K]

Answer: 2 1/3

Explanation:

10 2/6 - 7 5/6

You can make both a fraction by multiplying the denominator by the whole number, and then adding the numerator to that number, and keeping the denominator the same. So, 10*6 = 60 and 60 + 2 = 62 and you keep the denominator as 6, which would make 62/6

7*6 = 42 and 42 + 5 = 47 so 7 5/6 becomes 47/6

10 2/6 is equivalent to 62/6

7 5/6 is equivalent to 47/6

This just makes it easier to look at.

Now you just work through the equation.

62/6 - 47/6 = 15/6

15/6 = 2 3/6 = 2 1/3

3 0

3 years ago

Ella bought some key chains and spent a total of $24.Each key chain cost the same whole-dollar amount.She bought between 7 and 1

Dennis_Churaev [7]

Ella bought 9 key chains

4 0

4 years ago

Statements that are true for a cylinder with radius r and height h.

vampirchik [111]

Answer:

Only the second and third statements are correct:

Doubling r quadruples the volume.

Doubling h doubles the volume.

Step-by-step explanation:

The volume of a cylinder is given by:

$\displaystyle V=\pi r^2h$

We can go through each statement and examine its validity.

Statement 1)

If the radius is doubled, our new radius is now 2r. Hence, our volume is:

$\displaystyle V=\pi (2r)^2h=4\pi r^2h$

So, compared to the old volume, the new volume is quadrupled the original volume.

Statement 1 is not correct.

Statement 2)

Using the previous reasonsing, Statement 2 is correct.

Statement 3)

If the height is doubled, our new height is now 2h. Hence, our volume is:

$V=\pi r^2(2h)=2\pi r^2h$

So, compared to the old volume, the new volume has been doubled.

Statement 3 is correct.

Statement 4)

Statement 4 is not correct using the previous reasonsing.

Statement 5)

Doubling the radius results in 2r and doubling the height results in 2h. Hence, the new volume is:

$V=\pi (2r)^2(2h)=\pi (4r^2)(2h)=8\pi r^2h$

So, compared to the old volume, the new volume is increased by eight-fold.

Statement 5 is not correct.

7 0

3 years ago