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2 years ago

I will give brainly :) NO LINKS

Mathematics

2 answers:

exis [7]2 years ago

8 0

Answer:

HAH DUM

Step-by-step explanation:

user100 [1]2 years ago

4 0

4 12 18
:) fun little riddle

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X - 2y = 7 and 2x + 5y = -4 sorry more help but i need x and y again

Luden [163]

Answer:

x = 3, y = -2

3 0

2 years ago

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This question is confusing to me please help..

lisabon 2012 [21]

Answer:

Step-by-step explanation:

First off find how many bowls and vases combined

12 bowls and 8 vases therefore 20

to find 1/4 of a number divide by 4

therefore, 20/4 is 5

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2 years ago

If a circle has a diameter of 23 inches, then the radius will be_____?

Troyanec [42]

Answer:

half. what is half of 23? 11.5 inches

Step-by-step explanation:

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2 years ago

What is the ratio of the surface areas of the similar square pyramids below?

mamaluj [8]

Step-by-step explanation:

8 times 12 is 96

10 times 15 is 150 add them together and get 246

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1 year ago

This robotic arm is made up of two cylinders with equal volume and two triangular prism hands. The volume of each hand is

BaLLatris [955]

Answer:

$\frac{r}{3\pi h+r}$

Step-by-step explanation:

Since the height isn't given, we assume it to be "h" (of cylinders). And the answer will be in terms of "r" and "h".

The area of 1 arm is given, so the area of 2 arms would be:

$A_{arm}=2*(\frac{1}{2}r*\frac{1}{3}r*2r)=\frac{2r^3}{3}$

Now, area of 2 cylinders would be the formula:

$A_{cyl}=2*(\pi r^2 h)=2\pi r^2 h$

So, total area is A_arm PLUS A_cyl. The fractional area the arms are would be gotten by taking expression A_arm divided by A_total.

Shown below:

$\frac{A_{arm}}{A_{total}}=\frac{\frac{2r^3}{3}}{2\pi r^2 h + \frac{2r^3}{3}}$

We simplify further:

$\frac{\frac{2r^3}{3}}{2\pi r^2 h + \frac{2r^3}{3}}\\=\frac{\frac{2r^3}{3}}{2r^2(\pi h + \frac{r}{3})}\\=\frac{r}{3(\pi h + \frac{r}{3})}\\=\frac{r}{3\pi h+r}$

THis is the answer.

6 0

2 years ago

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