All Questions

694

+306

If a coin is tossed 10 times, and at least 9 of the tosses are heads, how many different sequences of tosses are possible?

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mathmathj28 Dec 31, 2019

808

+306

A coin is flipped 10 times, and at least 8 of the flips were heads. How many different sequences of flips could there have been?

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mathmathj28 Dec 31, 2019

196

+306

1. How many ways are there to distibute 4 different balls among 4 different boxes? 2. How many ways are there to distribute 4 identical bal

1. How many ways are there to distibute 4 different balls among 4 different boxes?
2. How many ways are there to distribute 4 identical balls among 4 identical boxes?
3. How many ways are there to distribute 4 identical balls among 4 different read more ..

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mathmathj28 Dec 31, 2019

618

help

What is the smallest positive integer that is divisible by each of the first six positive integers?

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Guest Dec 31, 2019

858

help

4 shepherds were watching over their flocks and they were commenting on how many sheep they each had.

If David had three more sheep, then he'd have one less sheep than Harry.
Whereas Sam has the same number as the other three read more ..

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Guest Dec 31, 2019

532

help

If all the whole numbers from 1 to 1000 inclusive are written down, which digit appears the smallest number of times?

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Guest Dec 31, 2019

914

help

Six 6-sided dice are rolled. What is the probability that exactly two of the dice show a 1 and exactly two of the dice show a 2? Express your answer as a common fraction.

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Guest Dec 31, 2019

465

help

a) four members are running for president in a society with members. how many different vote counts are possible, if each of the members vote for one of the four candidates?
b) four members are running for president in a society with 50 members. read more ..

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Guest Dec 31, 2019

577

help

in how many ways can we distribute 6 pieces of identical candy to 5 kids, if the two youngest kids are twins and insist on receiving an equal number of pieces?

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Guest Dec 31, 2019

754

+21

help

Determine all real numbers a such that the inequality has exactly one solution in x.

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SunriseReprise Dec 31, 2019

428

Math

What’s does square root and ans equal

Guest Dec 31, 2019

685

help

Compute (22343234532 X 22343234532)-(22343234533 X 22343234531).

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Guest Dec 31, 2019

751

help

How many digits are in the decimal representation of 1000^{1000}?

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Guest Dec 31, 2019

Dec 30, 2019

755

+262

help

Find n if n(n!) + n! = 720, where n! = (n)(n-1)(n-2)...2*1.

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atlas9 Dec 30, 2019

466

help

We fill the boxes below with the numbers 1, 2, 3, 4, 5, 6, using each number once. What is the smallest possible value of the sum?

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Guest Dec 30, 2019

823

help

If the ratio of a to b is r, then express the ratio of a + b to a - b in terms of r.

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Guest Dec 30, 2019

724

Thanks in advance

Consider the plane through the points A = (0,1,1), B = (1,1,0), and C = (1,0,3), as well as lines along the plane in the directions of and , spaced at integer multiples of those vectors: read more ..

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Guest Dec 30, 2019

913

Outcomes of compound events

You spin the spinner and flip a coin. How many outcomes are possible?
THE SPINNER HAS 5 SIDES

OlympusHero ●

Guest Dec 30, 2019

487

help please

Consider the projection matrix P that satisfies Pv = Projection of v onto .

Find 3 vectors with integer components and magnitude no greater than 8 that satisfy Pv = .
read more ..

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Guest Dec 30, 2019

2524

Geometry Help

Need some help with a few questions I was stuck on. Thanks!
1) Shown below is rectangle EFGH. Its diagonals meet at Y. Let X be the foot if an altitude is dropped from E to FH. If EX = 24 and GY = 25, find the perimeter of rectangle read more ..

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Guest Dec 30, 2019

-2

852

Help with some Geometry

1) Square ABCD and rectangle ACEG have the same area. Find the ratio AC:CE.
I got 2sqrt5/5 but it was incorrect.

2) A large square is divided into 4 small congruent rectangles and a small square as shown. read more ..

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Guest Dec 30, 2019

593

help

Find, with proof, the numerical value of (sin 10 degrees)(sin 50 degrees)(sin 70 degrees).

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Guest Dec 30, 2019

1125

Help! Thx!

What is the sum of the squares of the roots of $18x^2 +21x - 400$?

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Guest Dec 30, 2019

739

help

There is a circle being inscribed in an equilateral triangle, such that it touches all 3 sides of the triangle. What is the ratio of the radius of the circle to the side length of the triangle?

Omi67 ●

Guest Dec 30, 2019

549

help

When 2020 * 2022 is written in base 2021, what is the sum of the digits?

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Guest Dec 30, 2019

All Questions ⁺⁰237795 Questions

If a coin is tossed 10 times, and at least 9 of the tosses are heads, how many different sequences of tosses are possible?

A coin is flipped 10 times, and at least 8 of the flips were heads. How many different sequences of flips could there have been?

1. How many ways are there to distibute 4 different balls among 4 different boxes? 2. How many ways are there to distribute 4 identical bal

help

help

help

help

help

help

help

Math

help

help

help

help

help

Thanks in advance

Outcomes of compound events

help please

Geometry Help

Help with some Geometry

help

Help! Thx!

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