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3 years ago

Someone please explain they didnt tell me bout this im just a middle schooler

Mathematics

2 answers:

ryzh [129]3 years ago

5 0

Answer:

r=4.5, d=9

Step-by-step explanation:

So, lets go over two things.

#1 - What is Diamater?

Diamater is the distance from one side of a circle to the other.

#2 - What is radius?

Radius is the distance from any side of the circle, to the middle. This is half of the diamater.

In this case, the distance from one side of the circle to the other is 9in.

So the diamater must be 9.

d=9 in

Since we know the radius is half of the diamater, radius is:

9/2

4.5 in

So our radius must be 4.5.

r=4.5

This looks like the top answer.

Hope this helps! :D

e-lub [12.9K]3 years ago

3 0

Answer:

Diameter=9

Radius=4.5

Step-by-step explanation:

Because they are s t u p i d and they are slow teachers.They don't want us to learn any thing.

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My sister is half my age when I was 6 now im 70 how old is she?

TEA [102]

Answer:

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3 years ago

Pls help this is very easy

anastassius [24]

Answer:

20/9

Step-by-step explanation:

Alright, so by using the "keep me, change me, turn me over" method - we can easily solve this:

$\frac{8}{9}\div \frac{2}{5}\\=\frac{8}{9}\times \frac{5}{2}\\=\frac{4}{9}\times \frac{5}{1}\\=\frac{4\times \:5}{9\times \:1}\\=\frac{20}{9}$

I hope I was of assistance! #SpreadTheLove <3

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3 years ago

Cristina uses a ruler to measure the length of her math textbook.she says that the book is 4/10 meter long.Ise her measurement i

NNADVOKAT [17]

The simplest form iz 2/5

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3 years ago

Which figure can be formed from the net?

beks73 [17]

Answer:

its the figure on the top left, so A

brainliest pls! :D

8 0

3 years ago

The equation of the line WX is 2X plus Y equals -5 what is the equation of a line perpendicular to line WX in slope intercept fo

tensa zangetsu [6.8K]

Answer:

$y = \frac{1}{2}x - \frac{3}{2}$

Step-by-step explanation:

The equation of the line WX is, 2x + y = - 5

⇒ y = - 2x - 5 .......... (1)

This equation is in slope-intercept form and the slope is - 2 and the y-intercept is - 5.

Now, if a line perpendicular to equation (1) having slope m then, m × (- 2) = - 1

⇒ $m = \frac{1}{2}$

{Since the product of slopes of two mutually perpendicular straight line is - 1}

Therefore, the equation of the perpendicular line is

$y = \frac{1}{2}x + c$ , where c is a constant and we have to find it.

This above line passes through the point (-1,-2) and hence

$- 2 = \frac{1}{2}(- 1) + c$

⇒ $c = - \frac{3}{2}$

Therefore, the equation of the line will be $y = \frac{1}{2}x - \frac{3}{2}$ (Answer)

4 0

3 years ago

Someone please explain they didnt tell me bout this im just a middle schooler​

Someone please explain they didnt tell me bout this im just a middle schooler