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All Questions
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230689 Questions
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75
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Counting
Need to count all the possibles
Sam wants to color the three sides of an equilateral triangle. He has two different colors to choose from. In how many different ways can Sam color the sides of the triangle? (Two
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Guest
Feb 3, 2023
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89
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Probability
I have questions on this
Valeria has three coins, each of which has a probability of 1/2 of coming up heads. On her first turn, she flips all three coins. If all three come up heads, then she stops. Otherwise, for her second
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Guest
Feb 3, 2023
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82
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Counting
Need help counting this
Find the number of ways of arranging the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 in a row so that the product of any two adjacent numbers is even or a mutliple of 3
Guest
Feb 3, 2023
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144
2
plz help asasp
Evaluate (1+sqrt(3)i)^12 using DeMoivre's theorem. plz show all work
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Guest
Feb 3, 2023
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78
0
Complex numbers
Describe all solutions to zw - 3w - 2iw + 4z = 7iw + 5w + 11iz - 13 + 15i
where z and w are complex numbers.
Guest
Feb 3, 2023
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80
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Geometry
Help with geometry
In triangle ABC, the angle bisector of angle BAC meets AC at D. If angle BAC = 60, angle ABC = 60, and AD = 24, then find the area of triangle ABC.
Guest
Feb 3, 2023
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82
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Digits
Can anyone help plz
Find the number of six-digit numbers, where the sum of the digits is divisible by 8.
Guest
Feb 3, 2023
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80
0
Distributions
How do you solve
(a) In how many ways can you distribute 4 distinguishable balls among 3 indistinguishable boxes?
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Guest
Feb 3, 2023
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103
1
Algebra
Help how do I use rates here
Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 120 meters per hour when walking across flat ground, and 180 meters per
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Guest
Feb 3, 2023
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79
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-x-
why is a negative times a negative a positive?
Guest
Feb 3, 2023
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89
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Algebra
Help how do you use series
Let S be the set of all real numbers of the form
a1/3 + a2/3^2 + a3/3^3 + ....
where a_i \in {0, 1, 2} for all i.
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Guest
Feb 3, 2023
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91
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slope
what is (-6,6) and (0,2) as y=mx+b?
Guest
Feb 3, 2023
Feb 2, 2023
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71
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Geometry
Need help with geo
In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = 2. Find PQ.
Guest
Feb 2, 2023
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76
0
Counting
Difficult counting this
A debate team consists of 5 freshmen and 4 sophomores. (Everyone is distinguishable.) In how many ways can they stand in line, so at least two of the sophomores are standing next to each other,
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Guest
Feb 2, 2023
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86
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Expected value
How to solve this
There are a number of paths that go from A to B in the grid, where every step goes to the right or up. If we choose a line segment at random, then what is the expected number of paths that pass through
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Guest
Feb 2, 2023
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107
2
Help
How many ways are there to put 4 balls in 3 boxes if the balls are not distinguishable but the boxes are?
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Guest
Feb 2, 2023
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78
0
Counting
Need help with counting
We call a number cozy if every digit in the number is either even or next to an even digit. For example, a number is cozy if every digit in the number is either a 2 or next to a 2. For
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Guest
Feb 2, 2023
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88
0
what is pi
what is pi
Guest
Feb 2, 2023
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108
2
Help now
How many ways are there to put 5 balls in 3 boxes if the balls are not distinguishable but the boxes are?
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Guest
Feb 2, 2023
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81
0
Probability
Need major help with probability
A bag contains five white balls and three black balls. Your goal is to draw two white balls.
read more ..
Guest
Feb 2, 2023
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79
0
Counting
I have trouble counting
At my office, 16 people own cats, people own dogs, and people own both cats and dogs. How many people own a cat or a dog?
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Guest
Feb 2, 2023
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84
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Counting
How do you count
There are 97 students in South High School. South High School offers only Chinese and Spanish. There are more students in Chinese than in Spanish, and every student takes at least one language. If students take
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Guest
Feb 2, 2023
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74
0
Counting
Plz help with counting
In the olympic women's skating competition, the gold medal goes to first place, silver to second, and bronze to third. If there are skaters, including Americans, in how many ways can the medals be awarded
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Guest
Feb 2, 2023
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118
4
Help!!!
I run a book club with n people, not including myself. Every day, for 100 days, I invite 4 members in the club to review a book. What is the smallest positive integer n so that I can avoid ever having the exact same group of 4 members over all 100 days?
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Guest
Feb 2, 2023
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101
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Parametric Equations
Plz help with parametric equations
The position of a particle is given by the parametric equations
x = 1 + sin pi*t - cos pi*t
read more ..
Guest
Feb 2, 2023
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