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3 years ago

Help me in number 7 8 9 10 11 12 13 14

Mathematics

2 answers:

Zanzabum3 years ago

8 0

For number 7, you need to find out what number was multiplied by 5 to get 15, which would be 3. So, you multiply the numerator by 3 as well and you will have the missing number.
2/5=6/15

The least common multiple of two numbers is the smallest number that is a multiple of both numbers, that is not zero.
So, you need to find the smallest number that both 14 and 18 can be divided by.
The answer would be 126.

9 goes into 36 4 times, because 9x4=36. Because of this, you multiply the numerator by 4 as well. 4x5=20.
So, 5/9=20/36

The least common multiple of 5 and 10 would be 10, obviously. It isn't zero, and both 5 and 10 can be divided by 10.

The least common multiple of 42 and 36 is 252.

Three common multiples of 5 and 6. Look at the choices and choose the one where all three numbers can be divided by both 5 and 6.
30/6=5 and 30/5=6, 60/5=12 and 60/6=10, 90/5=18 and 90/6=15.
So, the answer is choice B.

The least common multiple of 30 and 60 is 60. 30 is half of 60, so we already know that 60 can be divided by 30. 60 can be divided by itself as well.

Well, divide each new denominator by 14, and then multiply that number by 9. If the number you get matches the numerator in the choice's fraction, then you found your answer.

Marina CMI [18]3 years ago

3 0

7 is A 8 is A 9 is D 10 is A 11 is

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Brilliant_brown [7]

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4 years ago

nd the surface area of a cylinderose radius is 1.2 mm and whoseheight is 2 mm.Round to the nearest tenth.SA = [?] mm²

AleksAgata [21]

Step 1

Given;

$\begin{gathered} A\text{ cylinder with radius 1.2mm} \\ Height=2mm \end{gathered}$

Required; To find the area

Step 2

The area of a cylinder is given as;

$\begin{gathered} A=2\pi rh+2\pi r^2 \\ A=(2\times\pi\times1.2\times2)+(2\times\pi\times1.2^2) \\ A=4.8\pi+2\times\:1.2^2\pi \\ A=24.12743mm^2 \\ A\approx24.1mm^2 \end{gathered}$

Answer;

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1 year ago

Answer for brainliest with explanation

Rudiy27

Answer:

The volume is

$24000 {mm}^{3}$

Step-by-step explanation:

The formula to find the volume of a rectangle is

$volume = length \times height \times width$

By looking at the shape that was given we can see that is is made up of two rectangles. In order to find the volume we have to first find the length, height, and width of both of these rectangles and then add them together.

First we must note that the opposite sides of a rectangle are always equal; hence the first rectangle (the one that is lying side ways) would have a width of 10mm, a length of 60mm, and a height of 20mm. The 60mm and the 10mm can easily be seen however to find the 20mm (the height) we have to subtract 40 from 60. The 60 is the total height of the tallest rectangle hence to find the height of the small rectangle we must subtract the 40mm from the 60mm which is 20mm. 60 x 10 x 20 = 12,000

For the second rectangle (the one that is standing upright) we have to do the same and find the length, width and height. The height is 60mm, the width is 20mm and the length is 10mm. 60 x 10 x 20 =12,000

Therefore the volume is 24,000 mm^3

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rewona [7]

Answer:

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Step-by-step explanation:

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3 years ago

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