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All Questions
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231266 Questions
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87
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Combinatorics
I need help here
Find the number of ways of choosing three points from the grid below, so that they form an isosceles right triangle.
Guest
Jan 23, 2023
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91
0
Inequality
Plz help with this hard inequality
(a) Show that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)^2 (c^4 + d^4)(e^4 + f^4) >= 32abcdef.
(b) Show that if a, b, c, d, e, f are nonnegative
read more ..
Guest
Jan 23, 2023
0
87
0
Help geometry
I need help plz
In the diagram below, PQRS is a parallelogram with a perimeter of 26 and an area of 28. What is the perimeter of rectangle OSTQ? Include an explanation of how you solved the problem.
Guest
Jan 23, 2023
0
97
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Probability
I need help quick with probabilities
The Boomtown Bears are playing against the Tipton Toros in a baseball tournament. The winner of the tournament is the first team that wins three games. The Bears have a probability of of winning
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Guest
Jan 23, 2023
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121
3
pls help geometry
In the diagram below, $\angle PQR = \angle PRQ = \angle STR = \angle TSR$, $RQ = 8$, and $SQ = 3$. Find $PQ$. Sadly I cant upload my picture (it wont let me), but if you search this up in google this site will have a slightly different problem but the same
read more ..
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Guest
Jan 23, 2023
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131
1
Algebra
Plz I need help on this problem
Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 120 meters per hour when walking across flat ground, and 180 meters
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Guest
Jan 23, 2023
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88
0
Probability
Can any1 help here?
A member of the junior varsity swim team will be elected as President. Each member is equally likely to be elected. The probability that a sophomore is elected is the probability that a freshman is elected.
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Guest
Jan 23, 2023
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97
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Graphing
Help need to use transformations somehow
The graph of y = f(x) is shown below.
read more ..
Guest
Jan 23, 2023
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91
0
Counting
Help I have spent a lot of time on this
Find the number of positive integers that satisfy the following conditions:
* Each digit is a 1 or a 2 or a 3
read more ..
Guest
Jan 23, 2023
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100
0
Geometry
Need help fast help
Triangle ABC is a right triangle with angle BAC= 90 degrees and angle B > angle . Suppose AP is an altitude of the triangle, AQ is an angle bisector of the triangle, and AR is a median of the
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Guest
Jan 23, 2023
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96
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precalc problem
I need lots of help here
Find the 3 smallest positive x-intercepts of the graph of
y = cos 12x + cos 16x + cos 20x
and list them in increasing order.
read more ..
Guest
Jan 23, 2023
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90
0
Factoring
Pleeez help with these
We are looking to factor 23x^2 + kx - 5 + x^2 - 3. Some values of k allow us to factor it as a product of linear binomials with integer coefficients. what are all such values of k?
Guest
Jan 23, 2023
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132
1
+656
Another reposted question bc the old answer is wrong
https://web2.0calc.com/questions/suppose-that-join-is-an-operation-defined-by-x-join
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Keihaku
Jan 23, 2023
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120
0
+656
Original Problem answer was incorrect; can someone pls help answer!
https://web2.0calc.com/questions/help-asap_21397
Keihaku
Jan 23, 2023
0
106
1
Expected value
Can I get help with this
The grid below is made up of line segments, like the line segment in red.
read more ..
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Guest
Jan 23, 2023
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89
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Counting
How to solve this
Find the number of paths from P to Q, where each step is to the right or up.
Guest
Jan 23, 2023
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120
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Digits
Help with digits
Find the number of six-digit numbers, where the sum of the digits is divisible by 8.
Guest
Jan 23, 2023
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93
0
Counting
Hi need help
I run a book club with n people, not including myself. Every day, for 100 days, I invite members in the club to review a book. What is the smallest positive integer n so that I can avoid ever having the exact same group
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Guest
Jan 23, 2023
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98
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Counting
Need help can only do
Each unit square of the 4 x 4 grid below is to be filled in with the number 1, 2, 3 or 4 so that
* each row contains the numbers 1, 2, 3, and 4 in some order
read more ..
Guest
Jan 23, 2023
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81
0
Counting
Plz help plz
Find the number of ways of placing 4 balls in 5 boxes if the balls are indistinguishable and the boxes are indistinguishable.
Guest
Jan 23, 2023
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84
0
Geometry
Need help with this triangle
Let ABC be a triangle, and let its angle bisectors be AD, BE, and CF, which intersect at I. If DI = 3, BD = 4, and BI = 8, then find the area of triangle ABC.
Guest
Jan 23, 2023
0
84
0
Counting
Help how do count
In the olympic women's skating competition, the gold medal goes to first place, silver to second, and bronze to third. If there are skaters, including Americans, in how many ways can the medals be awarded to
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Guest
Jan 23, 2023
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88
0
Probability
Help mee
The following cards are dealt to three people at random, so that everyone gets the same number of cards. What is the probability that everyone gets a red card?
Guest
Jan 23, 2023
0
104
1
Counting problems
Why is this so hard
Let n be a positive integer. Let k be a positive integer.
read more ..
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Guest
Jan 23, 2023
0
89
0
Binomial Theorem
Help this hard
For some real number a and some positive integer n, the first few terms in the expansion of (1 + ax)^n are
1 + 10x + 150 x^2 + cx^3 + ...
read more ..
Guest
Jan 23, 2023
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