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Post New Question
All Questions
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229743 Questions
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70
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Algebra
Help plz with this hard algebra
Find the coefficient of u^2 v^9 in the expansion of (2u - 3v + u^2 - v^2)^9.
Guest
Jan 28, 2023
Jan 27, 2023
0
87
1
Algebra
Can someone help with rate problems
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
read more ..
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Guest
Jan 27, 2023
0
79
0
Probability
Need help with probability
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 each game.
read more ..
Guest
Jan 27, 2023
+1
126
2
+163
Basic Trig or Geometry (I'm not sure)
so I need to find AE and CE
I understand that angle CAD = 90 degrees because of angle ADB
and CAD and ADB are the same triangle
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YourAverageDummy
Jan 27, 2023
0
121
1
Point R(8, 13) is translated 8 units left and 6 units down to create R’.
Point R(8, 13) is translated 8 units left and 6 units down to create R’.
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Guest
Jan 27, 2023
+1
138
3
Trig question
I have hard time with trig
Find the 3 smallest positive x-intercepts of the graph of
y = cos 12x + cos 16x + cos 20x
and list them in increasing order.
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Guest
Jan 27, 2023
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73
0
Counting
Plz help plz help with count
In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color, and at lest three of the squares are red. How many ways
read more ..
Guest
Jan 27, 2023
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93
0
Let $f(x) = \sqrt x$ and $g(x) = a \cdot f(x-h) + k$ for some real numbers $a, h, k$. You know the following information about $g$: the dom
please help with this
Guest
Jan 27, 2023
0
74
0
Algebra
I need to factor this somehow
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 27, 2023
0
97
1
Geometry
Help needed on this
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.
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Guest
Jan 27, 2023
0
80
1
Binomial Theorem
Help I need help now
For nonnnegative integers a and b, where a >= 2 and b >= 2, simplify
binom{a + b}{2} + binom{2a + b}{2} + binom{a + 2b}{2} - binom{a - b}{2}
read more ..
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Guest
Jan 27, 2023
+1
91
1
Someone please help
Simplify the Equation
(1/7x + 3/8) + (2/7x - 1/8)
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Guest
Jan 27, 2023
+1
142
6
+163
Basic Trig
Let be an angle such that P is the terminal point of :
Some of the points Q,S,R,T can be the terminal point of /2.
Not
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YourAverageDummy
Jan 27, 2023
0
79
0
Counting
How to count this
Three adults and three children are to be seated at a circular table. In how many different ways can they be seated if each child must be next to at least one adult? (Two seatings are considered
read more ..
Guest
Jan 27, 2023
0
84
0
Expected vaue
Plz help with expected value
Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 5 on them.
read more ..
Guest
Jan 27, 2023
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89
0
Binomial Theorem
Help need help
Find the positive integer n such that the expansion of (4x - 7y)^n contains a term of the form cx^2*y.
Guest
Jan 27, 2023
0
84
0
Exponential Functions
Help with exponential functions
Select all the correct statements. (For this problem, we assume that an exponential function is of the form ka^x where a > 0)
read more ..
Guest
Jan 27, 2023
+2
111
1
Algebra
Find all values of c such that 3*(2c + 1) = 28*(3*c) - 9. If you find more than one value of c, then list your values in increasing order, separated by commas.
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Guest
Jan 27, 2023
+1
92
0
Algebra
Help need help
Let x be a real number such that 625*x = 64. Then 125*x = ___ sqrt(____)
Guest
Jan 27, 2023
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82
0
Counting
Plz I need help help
Syd chooses two different primes, both of which are greater than 10 and multiplies them. The resulting product is less than How many different products could Syd have ended up with?
read more ..
Guest
Jan 27, 2023
0
76
0
Counting
I need help
A fair coin is tossed 12 times. How many different sequences of tosses could there have been, if the number of tosses was at least
Guest
Jan 27, 2023
0
129
2
+33
Help Now!
A plane is uniquely determined by three non-collinear points. What is the maximum possible number of planes that can be determined by 12 points in space?
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Readyformoremath
Jan 27, 2023
0
123
6
+33
Help with problem
My school's math club has boys and girls. I need to select a team to send to the state math competition. We want people on the team. In how many ways can I select the team without restrictions?
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Readyformoremath
Jan 27, 2023
0
111
2
9p8t7r6tfuvjh
A rectangle's perimeter and area have the same numerical value. The length of the rectangle is 5. What is the width?
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Guest
Jan 27, 2023
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