All Answers 353101 Answers

We cancel out the 1/3 and the 𝝅 so we have this

And I am going to prepare to enter the AMC8 this year(Hopefully the COVID-19 will end so I can go to the place that holds the contest).

we have the expression (3x)^2*24=x^2*y we solve that (3x)^2=9x^2 and 9x^2 is and 9x^2 is 9 times x^2 so the height of the other cone is y=27*9=216 inches and our final answer is 216 inches

All exterior angles add up to 360 degrees so we have 360-121-144=95 so our final answer is 95^o

Your welcome

we plug in a,b,c to get 3*3-4*4+2*5 and simplified we have 9-16+10 we solve thta 9-16=-7 and 10+-7=10-7=3 so our final answer is 3

He is incorrect, the first time he drawsa coin there is a 1/4 chance of him pulling a dime.  The second time he draws there is a 1/7 chance of him pulling a dime.  This means there is a 1/4x1/7=1/28 chance of him getting two dimes.

the picture is blurred out nevermind

Guest provided the correct answer but I expanded on it: 

The formula for a cone's  volume is  \(V=\frac{1}{3}hπr²\) where h is the height and r is the radius. So let's plug what we know into that equation. The slant height is 13 and the radius is 5. If we use the Pythagorean theorem (\(a^2+b^2=c^2\)- where a, b, and c are the sides of a triangle), you find out that the third side of the triangle (or the height) is 12. So the radius is 5 and the height is 12 \(\Rightarrow \frac {1}{3}\times12\times\pi\times25 \Rightarrow 100\pi\) which is \(100\pi \space or \space \boxed{c}\).

1 - Her average speed on Monday is =40 / (11/15) =54.54 mph
2 - Her average speed on Tuesday is =40 / (9/10) =44.44 mph
3 - Her average speed on Wednesday is =40/ (7/6) =34.29 mph
4 - Her average speed on Thursday is = 40 / (5/3) =24 mph
5 - Her average speed on Friday is =40 / 3 = 13 1/3 mph
6 - Her average speed over the 5-day period =[5 * 40] / [11/15 + 9/10 + 7/6 + 5/3 + 3] =200 / (112/15) =26.786 mph

fixed it

the answer is c

Let the number of adult tickets sold = A

Then number of children tickets sold =486 - A

5.50A + 4*[486 - A] =2416.50

5.50A +  1944  -  4A =2416.50

1.50A =2416.50 - 1944

A = 315 - adult tickets sold

486 - 315 =171 - Children's tickets soldd

What do you mean??? There is an AMC 8 class on aops.

1.

-16+5n=-7(-6+8n)+3

-16+5n=42-56n+3

61n=61

n=1

2.

-4k+2(5k-6)=-3k-39

-4k+10k-12=-3k-39

9k=-27

k=-3

Because 7 ate/eight 9. :)))

Chris, Melody, Pavlov, Geno, anybody

Would somebody please tell me what's wrong with that answer?  Why would anybody give it a negative heart, or whatever you call them here?  It's easy to tell that the majority of questions here are posted by children, but math kids are nice, and that any of them would be mean comes as a surprise.  I started volunteering here because I have a passion to help people.  I don't get paid for doing this, and I don't even expect gratitude, but is it too much to expect civility? 

_.

If you make a list of the driving speed, 60,50,50,40,40,30,30,20,20,10 you notice a patern, To avoid any heavy adding and multpling knowing it 

                                                            +10,20,20,30,30,                                                           equals 5 70's is helpful.  To find the average 

                                                              70,70,70,70,70                                                            you need to add all 10 numbers up and then divide it by 10.  We already know tha t divided by 5 it equals 70 so 70 divided by 2 is 35.  So 35 is our answer

I'm sorry it is incorrect. Could anyone else give it a try?

I'm not sure why you are so bitter and toxic online.  I'm sure your a nicer person in real life.  But how exactly was I supposed to know this rule?  Nobody else seems to know it.  Is it even a rule? 

By stars and bars, the number of ways is C(51,5) = 2349060.