All Questions ⁺⁰237643 Questions

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161

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Distributions

Need help on these counting

(a) In how many ways can you distribute 4 distinguishable balls among 6 indistinguishable boxes?
read more ..

Guest Jan 23, 2023

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175

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Probability

Help Im stuck

Triangle XYZ is equilateral, with O as its center. A point P is chosen at random. Find the probability that P is closer to point O than to any of the side lengths.

Guest Jan 23, 2023

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154

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Algebra

Plz help with expanding

Expand (sqrt(t) + 3t + 1)^3 + (sqrt(t) - 3t + 1)^3.

Guest Jan 23, 2023

Jan 22, 2023

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212

1

System

I'm very stuck on this system problem.

Let a and b be real numbers such that a^3 + 3ab^2 = 679 and a^3 - 3ab^2 = 673. Find a - b.

Guest Jan 22, 2023

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222

4

+660

This one was posted awhile ago but unfortunately the answer is incorrect; Pls Help!

https://web2.0calc.com/questions/please-help_23181

Keihaku Jan 22, 2023

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197

1

hard algebra

let a, b, c be real numbers (could be zero) and n a positive whole number. If (x-8)(ax^2+bx+c)+8c=x^n, what is the sum of all positive values of a+b+c+n

Guest Jan 22, 2023

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194

1

HELP HELP HELP FAST

The sum of two odd numbers with 3 and 4 positive divisors is a whole number with 7 positive divisors. What is the greatest possible value of the number with 4 positive divisors

Guest Jan 22, 2023

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188

2

Counting I think

From the vertices of a regular 2023-gon, choose 1011 of the vertices at random, without replacement. In how many ways can vertices be chosen that no chosen vertex is immediately adjacent to another? Rotations are considered distinct

Guest Jan 22, 2023

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195

1

Algebra

plz can someone help

Let a and b be real numbers such that a + b = 4 and a^4 + b^4 = 16.
(a) Find all possible values of ab
(b) Find all possible values of a + b
(c) Find all possible values of a and b read more ..

Guest Jan 22, 2023

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149

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Counting

I need help quick

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 Jan 22, 2023

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157

0

Geometry

Please help with this geometry stuff

In triangle PQR, M is the midpoint of PQ. Let X be the point on QR such that PX bisects angle QPR, and let the perpendicular bisector of PQ intersect AX at Y. If PQ = 36, PR read more ..

Guest Jan 22, 2023

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189

2

I NEED HELP PLS FAST

let a,b,c be positive whole numbers. Where a>c. If both a-b and c-b are prime. and a+c = 2019. What is the greatest value of b

Guest Jan 22, 2023

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182

1

Fractions

need hard help with problem

Levans writes a positive fraction in which the numerator and denominator are integers, and the numerator is 1 greater than the denominator. He then writes several more fractions. To make each new fraction, read more ..

Guest Jan 22, 2023

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210

1

Help!

Consider a particle following the parametric equations
as well as points : In the time interval from to our particle read more ..

Guest Jan 22, 2023

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163

0

Q applied math

How much would an annuity be worth if you deposited $200 quarterly for 10 years that continued to earn 9% interest?

Guest Jan 22, 2023

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186

1

Probability

Plz help I'm not good at this

In Ms. Q's deck of cards, every card is one of four colors (red, green, blue, and yellow), and is labeled with one of seven numbers (1, 2, 3, 4, 5, 6, and 7). Among all the cards of each color, there read more ..

Guest Jan 22, 2023

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181

1

Probability

help how do I probability

Right triangle XYZ has legs of length XY = 12 and YZ = 6. Point D is chosen at random within the triangle XYZ. What is the probability that the area of triangle XYD is at most 20?

Guest Jan 22, 2023

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158

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Binomials

Need to simplify binomials

For nonnnegative integers a and b, where a >= 2 and b >= 2, simplify
binom{a + b}{2} + binom{2a + b}{2} + binom{a + 2b}{2} - binom{a - b}{2}

Guest Jan 22, 2023

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154

0

Geometry

Plz help with this help needed now

Find the circumradius of triangle ABC. Find the inradius of triangle ABC.
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Guest Jan 22, 2023

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161

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Expected value

Help how do I compute expected value like this

The grid below is made up of line segments, like the line segment in red.
read more ..

Guest Jan 22, 2023

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204

1

+24

Geometry

In triangle , the angles , , form an arithmetic sequence. If , then what is , in degrees?

puzzle70 Jan 22, 2023

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156

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Distributions

Help help please

Find the number of ways of placing 4 balls in 5 boxes if the balls are indistinguishable and the boxes are distinguishable.

Guest Jan 22, 2023

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194

1

geometry :)

The size of a computer monitor is usually given by the length of its diagonal. A monitor's aspect ratio is the ratio of its width to its height. This monitor has a diagonal length of 27 inches and an aspect ratio of 16:9. Using ratios and the Pythagorean read more ..

Guest Jan 22, 2023

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183

1

Graphing

Help with this plz

What is the smallest distance between the origin and a point on the graph of y = 1/2*(x^2 - 8)?

Guest Jan 22, 2023

0

192

1

+24

Help - geometry

In the diagram, , , and . What is (in degrees)?

https://latex.artofproblemsolving.com/c/5/c/c5c3c13003a86e798064b921c9e3f131d71ccb17.png

puzzle70 Jan 22, 2023

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