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Jeff123

10 Questions
31 Answers

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We have 10 standard 6-sided dice, all different colors. In how many ways can we roll them to get a sum of 20?

We have 10 standard 6-sided dice, all different colors. In how many ways can we roll them to get a sum of 20?

Please explain!
read more ..

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Jeff123 Oct 13, 2017

0

2283

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Robert likes chocolate milk, so he decides to visit the milk bottling plant every day for a week to get the free samples. Unfortunately for

Robert likes chocolate milk, so he decides to visit the milk bottling plant every day for a week to get the free samples. Unfortunately for him, the bottling plant sometimes bottles regular milk instead of chocolate milk, so each day the plant has a 2/3 read more ..

Jeff123 Oct 12, 2017

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1727

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In class we saw that the sum of the entries of row $n$ of Pascal's Triangle is $2^n$ . In this problem we investigate the sums of the squares

In class we saw that the sum of the entries of row

$n$ of Pascal's Triangle is

$2^n$ . In this problem we investigate the sums of the squares of the entries of row

$n$ of Pascal's Triangle.
(a) Compute the sums of the squares of Rows 1-4 of Pascal's read more ..

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Jeff123 Oct 6, 2017

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3

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Probability and Geometry

(1) A line segment is broken at two random points along its length. What is the probability that the three new segments can be arranged to form a triangle?

(2) Three points are selected randomly on the circumference of a circle. What read more ..

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Jeff123 Sep 25, 2017

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In a lottery, a ticket costs $\$3$ , and the jackpot is worth $\$250000$ . In all, $100000$ tickets are sold, one ticket is randomly drawn, an

In a lottery, a ticket costs

$3, and the jackpot is worth$ 250000. In all, 100000 tickets are sold, one ticket is randomly drawn, and the winner is awarded the jackpot. What are the expected winnings in dollars of buying one ticket read more ..

Jeff123 Sep 21, 2017

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1184

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Find the value of $x = 1 + \cfrac{1}{2 + \cfrac{1}{2 + \cfrac{1}{2 + \cfrac{1}{2 + \ddots}}}}.$

Find the value of

Jeff123 Sep 18, 2017

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3048

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Please help!

I'm terrible at modular arithmetic, so I might be asking a lot of questions on it:

1. Brandon spends his afternoon picking apples from an orchard. He notices that if he groups the apples he picked by 5's or 6's, then he ends read more ..

Jeff123 Sep 15, 2017

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1559

5

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Modular Arithmetic Help!!!

(a) How many positive integers from 1 to 5000 satisfy the congruence ?

(b) How many positive integers from 1 to 5000 satisfy the congruence ?

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Jeff123 Sep 13, 2017

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1160

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HELP PLS!!!

A cube is painted red on all six sides, then cut into 125 smaller congruent cubes.
A small cube is selected at random and rolled. What is the probability that it has a red side facing up?

Jeff123 Sep 12, 2017

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Oh okay, but thanks so much!!!

Jeff123Oct 13, 2017

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I'm not sure I understand the website. Can you rephrase it so it is simpler?

I found out that we must find how many ways are there to give out 20 dots to 10 dice. Try simplifying that and find a pattern... I'm working on that right now

Jeff123Oct 13, 2017

+109

+1

Possibly to see how helpful you are???

Jeff123Oct 13, 2017

+109

+1

https://www.khanacademy.org/math/algebra2/exponential-and-logarithmic-functions/introduction-to-logarithms/v/logarithms

Jeff123Oct 13, 2017

+109

+1

Thanks everyone!!! Sorry for the late reply

Jeff123Oct 13, 2017

+109

0

I AM SO SORRY MELODY!!! I never meant to be rude!!! I just didn't check my problems because I figured out before you helped me figure it out!!! I am super duper sorry! Please don't be mad at me...

Jeff123Oct 13, 2017

+109

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Thanks!

Jeff123Oct 12, 2017

+109

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HELP PLEASE

Jeff123Sep 25, 2017

+109

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No one really wants to do that... it's not a hard problem... why do you need help with it?

Jeff123Sep 25, 2017

+109

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Solve for x:

$\dfrac{x}{3}=\dfrac{x}{2}-2\rightarrow2x=3x-12\rightarrow x=12$

Jeff123Sep 25, 2017

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You have to make this more clear. Are we solving x in terms of y or vice versa? I am going to assume that it is in terms of y.

What is $\frac{y-5}{2}<-\frac{x}{3}$ ?

Multiply 6 on both sides to get $3y-15<-2x$

Divide -2 on both sides, but we have to change the sign $-\frac{3}{2}y+\frac{15}{2}>x$

Jeff123Sep 24, 2017