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Post New Question
All Questions
+0
230633 Questions
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1230
4
+78
PLEASE HELP WITH PROBABILITY QUESTIONS
1. If the chance of rolling a 2 on a dice is 1/6, what is the chance of not rolling a 2?
and
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jesshobbs
Dec 17, 2019
0
548
0
+19
How did this happen?
so i recently saw this post https://web2.0calc.com/questions/off-topic-how-is-forum-score-calculated at first he had 14 score or hearts whatever you call them 2 hours later i came back to this post and saw that
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off-topic
sanic
Dec 17, 2019
0
549
2
help
8 students are planning on splitting up into 3 (non-empty) study groups. How many ways can they split up into these study groups?
Note: It is possible that a study group contains only 1 person.
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Guest
Dec 17, 2019
0
355
1
help
A pond grew double in size each day. if in the 20th day the pond was of its maximum size , at what day it would be half?
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Guest
Dec 17, 2019
0
1
722
2
help
Marla is on the student council. The council will choose 3 members at random to run the drive. There is a 50% chance that Marla will be chosen. How many students are on the council?
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Guest
Dec 17, 2019
0
378
1
Can someone help please?
There are 15 figure skaters in the Olympic women's competition, including 4 Americans. The gold medal goes to first place, silver to second, and bronze to third.
Suppose that the Olympics powers-that-be decide that exactly one American must
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Guest
Dec 17, 2019
0
466
1
help
The curves x^2 + y^2 + 4x + 6y = 12 and 5y = 4x + 13 are drawn in the coordinate plane. How many times do they intersect?
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Guest
Dec 17, 2019
0
357
1
help
Given that a + b = 17, c + d = 20, and (a - d) = (d - c)/2 = 1, find (b + c)/(a - b).
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Guest
Dec 17, 2019
0
480
3
Please Help! Thx
Find all complex numbers $z$ such that $z^4 = -4.$
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Guest
Dec 17, 2019
0
533
4
math question help
There are 15 figure skaters in the Olympic women's competition, including 4 Americans. The gold medal goes to first place, silver to second, and bronze to third.
Suppose that the Olympics powers-that-be decide that exactly one American must win
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Guest
Dec 17, 2019
0
402
1
Calculate the mean price (weighted mean) from the following table.
Calculate the mean price (weighted mean) from the following table.
Price of book (x) (in AED) Number of books
250 4
320 8
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Guest
Dec 17, 2019
0
512
1
help
A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red marble is 1 in 5. Yasmine returns the marble to the bag and adds five more red marbles to the bag. The probability that she takes
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Guest
Dec 17, 2019
0
685
1
help
If (a + b)/a = a/b = x, and x is positive, then find x.
heureka
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Guest
Dec 17, 2019
0
429
1
help
Solve the system x/(sqrt(x) + sqrt(y)) = 18 and y/(sqrt(x) + sqrt(y)) = 2.
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Guest
Dec 17, 2019
0
379
1
help
There are eight positive integers n for which 2^n + 1 is a divisor of 2^(210) - 1. Four of these divisors are 2^1 + 1, 2^3 + 1, 2^5 + 1, and 2^7 + 1. Find the other four.
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Guest
Dec 17, 2019
0
409
0
help
Twenty recruits stand in a long column, one behind the other. At a signal from the sergeant, the recruits standing in places 10 and 20 step forward into places 1 and 2 respectively, and the others step back. Find the least number of these maneuvers
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Guest
Dec 17, 2019
0
717
3
stumped, pls help
Quadrilateral ABCD is a parallelogram. The midpoints of AB and AD are M and N, respectively. Let P be the intersection of DB and CM and let Q be the intersection of DB and CN. Compute PQ/DB.
Thanks.
Omi67
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Guest
Dec 17, 2019
0
407
1
web2;0calc Dozenal Calculator?
Have you created a Dozenal version of this calculator? If so, I wouldn't mind having it posted on this site.
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Guest
Dec 17, 2019
0
879
2
aglie mind
Jim owns a restaurant on the edge of a canyon. He wants to install a cable car over the canyon. He needs to know the width of the canyon. A surveyor gives him the drawing shown. Based on this drawing, what is the width of the canyon?
off-topic
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Guest
Dec 17, 2019
0
777
1
help
The graph of a quadratic function passes through the points with coordinates (-1,-2), (1,0), (2,7), and (3,y). Find y.
Omi67
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Guest
Dec 17, 2019
0
676
1
help
Find the degree-measure of the least positive angle that satisfies sin 20 + sin 40 = sin theta.
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Guest
Dec 17, 2019
0
469
2
help
Compute (1 + cos 60 + i sin 60)^(12).
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Guest
Dec 17, 2019
-2
943
3
+67
[Off-Topic] How is forum score calculated?
I created my account about a week ago, and have posted one question and one answer. Both got +1. However, I have a score of 7, and it's increased by one or two in the last few days, despite me not doing anything during that time.
What exactly defines
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Darry
Dec 17, 2019
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