All Questions ⁺⁰230620 Questions

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58

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counting

In how many ways can you distribute 10 indistinguishable balls among 8 distinguishable boxes, if at least one of the boxes must be empty?

Guest Mar 21, 2023

+1

88

1

geometry

Points X, Y, and Z are on the sides QR , PR, and PQ respectively, of right triangle PQR such that PZXY is a square. If PQ=10 and PR=10, then what is the side length of the square?

Guest Mar 21, 2023

+1

78

2

+12

Exponential form

If I have e^{4pi*i/3} - e^{5pi*i/6}, how would I solve that? Like how do I subtract? I'm only used to head to tail addition

GandalftheGrey Mar 21, 2023

+1

84

1

counting

Joanna has six beads that she wants to assemble into a bracelet. Two of the beads have the same color, and the other four all have the same color. How many different ways can Joanna assemble her bracelet? (Two bracelets are considered identical if one can read more ..

Guest Mar 21, 2023

Mar 20, 2023

+1

86

2

If shoes cost 48$ but have a 25% discount how much are they

If shoes cost 48$ but have a 25% discount how much are they

Guest Mar 20, 2023

+1

62

0

Geometry

Let B, A, and D be three consecutive vertices of a regular -gon. A regular heptagon is constructed on AB with a vertex C next to A Find angle BCD in degrees.

Guest Mar 20, 2023

+1

64

0

counting

(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)
(b) Find the number of ways that Magnus can give out 20 identical stickers to 5 of read more ..

Guest Mar 20, 2023

+1

81

1

counting

Miyu is giving out 9 identical chocolates to her 7 friends, including Dhruv. All possible distributions are equally likely. What is the probability that Dhruv gets exactly 2 chocolates?

Guest Mar 20, 2023

+1

65

1

Challenging question anyone up for the chalenge

Guest Mar 20, 2023

+1

69

3

2 Hard algebra questions

TThe 2 questions

Guest Mar 20, 2023

+1

64

4

Help pls thanks

Function $C$ is defined on positive integers as follows: \[C(n) = \begin{cases} \dfrac n 2 & \text{if $n$ is even}, \\ 3n+1 & \text{if $n$ is odd}. \end{cases}\] What is the value of \[C(1) + C(2) + C(3) + C(4) + \cdots + C(99) + C(100)?\]
<read more ..

Guest Mar 20, 2023

+1

74

1

Help pls...thx

1. For $2021$, the amount of U.S. federal tax owed $T$ is a function of taxable income $d$: \[T(d) = \begin{cases} 0.1d & \text{if}~d \le 9875, \\ 0.12(d-9875) + 987.5 & \text{if}~ 9876 \le d \le 40125, \\ 0.22(d-40125) + 4617.5 & \text{if}~ read more ..

Guest Mar 20, 2023

0

79

1

+62

Question- find C

For some real number a and some positive integer n, the first few terms in the expansion of (1 + ax)^n
are 1 - 20x + 150x^2 + cx^3 +...
find c

Tacoflea Mar 20, 2023

0

76

1

+62

Find the coefficient of u^2 v^9 in the expansion of (2u^2 - 3v^3)^4

Find the coefficient of u^2 v^9 in the expansion of (2u^2 - 3v^3)^4

Tacoflea Mar 20, 2023

0

69

0

expected value

I need help with these
Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 5 on them.
(a) What is the expected value of the number shown when we draw a single slip of paper? read more ..

Guest Mar 20, 2023

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