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All Questions
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230850 Questions
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104
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help factoring
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
Dec 7, 2022
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220
4
+656
Rationalization Question
Rationalize the denominator of:. The answer can be written as , where A and B are integers. Find the minimum possible value of A+B.
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Keihaku
Dec 7, 2022
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101
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Geometry
In the diagram below, D is a point on segment CE such that segments AD and BE are parellel and point A is not on segment BC. Line segments AD and BC intersect at point P.
If angle CAD = 67 degrees, then what is angle
read more ..
Guest
Dec 7, 2022
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101
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Probability
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
Dec 7, 2022
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88
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Exponents
Solve for y if 9^y = 3*6*27*4*81*10*2
Guest
Dec 7, 2022
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173
3
+656
Perfect squares; please help!
While walking by a classroom, Linda sees two perfect squares written on a blackboard. She notices that their difference is her favorite number, 99. She also notices that there are exactly two other perfect squares between them. What is the sum of the two
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Keihaku
Dec 7, 2022
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93
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binomials
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}
Guest
Dec 7, 2022
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104
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Binomials
Fill in the blanks to make the equation true (Each blank should contain a positive integer.)
\binom{n}{k} = \binom{n - 2}{k} + \binom{n - 2}{k - 1} + \binom{n - 1}{k} + \binom{n - 1}{k - 1} + \binom{n}{k - 1} + \binom{n}{k +
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Guest
Dec 7, 2022
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132
1
Binomials
Simplify binom{100}{50}/binom{200}{51}*binom{100}{51}/binom{200}{50}
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Guest
Dec 7, 2022
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162
1
+11
PLZZZZZ HELP AND ASAP AND CORRECTLY!!! PLZZZZZ!!!!!
Delaney would like to make a 5 lb nut mixture that is 60% peanuts and 40% almonds. She has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds. Let p represent the number of pounds of peanuts needed to make the
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JustGoKen
Dec 7, 2022
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97
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Identity
For a certain function f(n), the identity
(2n)/n - (2n)/(n + 1) = f(n) (2n)/n
for all nonnegative integers n. Find f(n).
Guest
Dec 7, 2022
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87
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Probability
The dartboard shown is a 12-inch square. Each inner square is formed by joining the midopints of the larger ssquare. What is the probability of landing within the shaded area with a throw of one dart, assuming that the dart lands and sticks
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Guest
Dec 7, 2022
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90
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Percent
One leg of a right triangle is increased by 70%, and the other leg is decreased by 70%. By what percent does the area of the triangle decrease?
Guest
Dec 7, 2022
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99
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Probability
A target consists of concentric circles of radii 1 cm, 4 cm, and 9 cm. The innermost circle is colored red, the middle ring is colored white, and the outer ring is colored blue. If a point is chosen at random on the target, what is the probability
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Guest
Dec 7, 2022
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87
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Algebra
Let a and b be real numbers such that a ++ b = 4 and a^4 + b^4 = 16.
(a) Find all possible values of ab
(b) Find all possible values of a + b
(c) Find all possible values of a and b
Guest
Dec 7, 2022
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85
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Algebra
Let's take a look at (x + y)^2 (x - y)^2 and (x^2 + y^2)(x^2 - y^2). While Beeker believes that these two expressions are equal for all real numbers x and y Clod believes they are not! Let's get to the bottom of this!
a) Evaluate (x + y)^2 (x -
read more ..
Guest
Dec 7, 2022
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82
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Algebra question
There are to be nine positive odd integers in teh grid below. Each number is unique, and the numbers in each row, coumn, and diagonal have the same sum. What is the value of x?
Guest
Dec 7, 2022
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92
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Probability question
In a raffle, there are three sets of tickets (red, blue and green), each numbered 1 through 999, for a total of 2997 tickets. The prizes are distributed based on the table below. If a ticket is chosen at random, what is the probability of winning
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Guest
Dec 7, 2022
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99
0
trapezoid
In trapezoid ABCD, shown here, the number of units in the perimeter is between two consecutive, positive integers. What is the sum of those two integers?
Guest
Dec 7, 2022
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92
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help algebra
Arrange the following numbers in increasing order (smallest first, biggest last):
A = 2*1/2*4*1/6
B = 12*128
read more ..
Guest
Dec 7, 2022
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87
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Pascal's triangle
The entries in a certain row of Pascal's triangle are
1, n, ..., n, 1
The average of the entries in this row is 2. Find n.
read more ..
Guest
Dec 7, 2022
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89
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Primefaktors
What are the primefactors of 7044022547268881192752547507098513657632054638108864974785663981184799841738604431726862929169668839600639371735571845622902596356019379695207596027024366887171401646991608462162940525172135553397?
Guest
Dec 7, 2022
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99
0
Probability
Valeria has three coins, each of which has a probability of 1/2 of coming up heads. On her first turn, she flips all three coins. If all three come up heads, then she stops. Otherwise, for her second turn, she flips any coins that came up tails.
read more ..
Guest
Dec 7, 2022
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92
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hard counting
In the SuperLottery, three balls are drawn (at random, without replacement) from white balls numbered from 1 to 12, and one SuperBall is drawn (at random) from red balls numbered from 13 to 20. When you buy a ticket, you choose three numbers from 1 to 12,
read more ..
Guest
Dec 7, 2022
0
94
0
hard counting
In the SuperLottery, three balls are drawn (at random, without replacement) from white balls numbered from 1 to 12, and one SuperBall is drawn (at random) from red balls numbered from 13 to 20. When you buy a ticket, you choose three numbers from 1 to 12,
read more ..
Guest
Dec 7, 2022
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