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Post New Question
All Questions
+0
231199 Questions
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694
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+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?
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
0
717
1
+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?
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
0
196
4
+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
0
520
2
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
0
779
1
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
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Guest
Dec 31, 2019
0
436
1
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
0
874
20
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
0
383
1
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
0
476
1
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
0
664
1
+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
0
347
0
Math
What’s does square root and ans equal
Guest
Dec 31, 2019
0
590
2
help
Compute (22343234532 X 22343234532)-(22343234533 X 22343234531).
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Guest
Dec 31, 2019
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643
1
help
How many digits are in the decimal representation of 1000^{1000}?
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Guest
Dec 31, 2019
Dec 30, 2019
0
668
2
+261
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
0
376
1
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
0
731
2
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
0
622
2
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:
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Guest
Dec 30, 2019
0
818
1
Outcomes of compound events
You spin the spinner and flip a coin. How many outcomes are possible?
THE SPINNER HAS 5 SIDES
OlympusHero
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Guest
Dec 30, 2019
0
394
2
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
0
2483
4
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
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Guest
Dec 30, 2019
-2
786
4
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
0
526
1
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
0
1058
3
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
0
637
1
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
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Guest
Dec 30, 2019
0
447
1
help
When 2020 * 2022 is written in base 2021, what is the sum of the digits?
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Guest
Dec 30, 2019
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