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All Questions
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231266 Questions
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509
2
N COMPOUNDED INTEREST
I DO NOT UNDERSTAND HOW TO MULTIPLIN WHAT IS IN MY PERENTHESSE BY THE POWERS MY PROBLEM IS A= 8350(1+0.052/12)^10*12
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Guest
Dec 5, 2019
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367
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help
A biased coin will come up heads 2/3 of the time, and tails 1/3 of the time. The coin is flipped 5 times. What is the probability that heads comes up an even number of times?
Guest
Dec 5, 2019
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469
1
help
Two people stand around a circular duck pond of radius R. They are placed randomly along the circumference of the duck pond. What is the probability that the distance between them is greater than R?
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Guest
Dec 5, 2019
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399
1
help
In general, the probability that it rains on Saturday is 25%.
If it rains on Saturday, the probability that it rains on Sunday is 50%. If it does not rain on Saturday, the probability that it rains on Sunday is 25%.
read more ..
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Guest
Dec 5, 2019
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433
1
help
The numbers on a certain die are sqrt(1), sqrt(2), sqrt(3), sqrt(4), sqrt(5), and sqrt(6). The die is rolled twice, and the two results are multiplied. What is the probability that the product of the two rolls is rational?
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Guest
Dec 5, 2019
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426
1
help
A fair, six-sided die is rolled six times. The six numbers are added up. What is the probability that the sum of the six numbers is a multiple of 6?
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Guest
Dec 5, 2019
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631
1
help
One number is chosen at random from the set {1, 2, 3, ..., 6}, and another number is chosen at random from the set {7, 8, 9, ..., 12}. What is the probabilty that the product of the two numbers is even?
heureka
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Guest
Dec 5, 2019
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397
1
help
A number is chosen at random from the set {1, 2, 3, ..., 30}. What is the probability that the number is a multiple of 3 or 13?
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Guest
Dec 5, 2019
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357
0
help
Three numbers are chosen at random from the set {1, 2, 3, ..., 20}. What is the probability that no two chosen numbers are consecutive?
Guest
Dec 5, 2019
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426
1
help
You flip a fair coin ten times. What is the probability that it comes up heads at least seven times?
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Guest
Dec 5, 2019
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696
1
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every time i use a piece of scrap paper, i crumple it up and try to shoot it inside the recycling bin across the room. i'm pretty good at it: if i shoot 5 pieces of paper at the recycling bin, at least one of them will make it inside the recycling bin with
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Guest
Dec 5, 2019
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495
1
help
A bag contains five white balls and five black balls. Your goal is to draw two black balls.
You draw two balls at random. Once you have drawn two balls, you put back any white balls, and redraw so that you again have two drawn balls. What is the probability
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Guest
Dec 5, 2019
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621
1
help
In triangle ABC, perpendiculars from A to the bisectors of anlge B and angle C meet the bisectors in D and E, respectively. The line through D and E intersects AC at X and AB at Y. Find the ratio of the area of XYBC to the area of ABC.
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Omi67
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Guest
Dec 5, 2019
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1082
1
help
There exist digits A and B such that 30AB5 = 225*n. Find all possible values of n.
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Guest
Dec 5, 2019
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349
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help
Find all real vaues of x that satisfy
(3x^3 - 2x^2 + x + 1)/(3x^3 - 2x^2 - x - 1) = (3x^3 - 3x^2 + 5x - 13)/(3x^3 - 2x^2 - 5x + 13).
Guest
Dec 5, 2019
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597
1
help
Find the positive integers a and b such that sqrt(10 + sqrt(84)) = sqrt(a) + sqrt(b).
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Guest
Dec 5, 2019
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326
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help
Solve sqrt(x^2 - 4) - 2*sqrt(x^2 - 1) = x.
Guest
Dec 5, 2019
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622
1
help
Quadrilaeral ABCD has right angles at B and D. If ABCD is a kite shaped with AB = AD = 20 and BC = CD = 15, find the length of the radius of the circle inscribed in ABCD.
Omi67
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Guest
Dec 5, 2019
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387
1
help
There are two times between 5 AM and 6 AM when the hands of an accurate clock are perpendicular. Exactly how many minutes elapse between these two times?
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Guest
Dec 5, 2019
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394
2
help!! :((
Find the largest constant C so that x^2+y^2 >= C(x+y).
for all real numbers x and y
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Guest
Dec 5, 2019
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550
1
help
With pipe 2 closed, pipe 1 will fill the water tank in 1 hour.
With pipe 1 closed, pipe 2 will empty the water tank in 2 hours.
If both pipes are open, how long will it take for the water tank to fill ?
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Guest
Dec 5, 2019
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384
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help
Triangle ABC has AB=10- and AC=14. A point P is randomly chosen in the interior or on the boundary of triangle ABC. What is the probability that P is closer to AB than to AC?
Guest
Dec 5, 2019
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529
1
help
Lokman bikes from her home to her office at a constant speed of 20 km/h, and she bikes back home at a constant speed of 40 km/h. What is closest to the average speed of her bike over time in km/h?
Expain all your steps, in detail.
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Guest
Dec 5, 2019
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509
1
help
A high school student measured the elevation of the top of the building to be 40 degrees. Moving 20 meters closer to the building, he found the elevation to be 60 degrees. What is the approximate height of the building?
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Guest
Dec 5, 2019
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