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Post New Question
All Questions
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237827 Questions
0
173
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Polynomial
Find a polynomial f(x) of degree 5 such that both of these properties hold:
* f(x) is divisible by x^3
* f(x) + 1 is divisible by (x + 1)(x + 2)(x + 3)
read more ..
Guest
Feb 17, 2023
0
205
1
Sums
Let
A = 1/(1*3) + 1/(3*5) + 1/(5*7) + ...
and
B = 1/(2*4) + 1/(4*6) + 1/(6*8) + ...
read more ..
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Guest
Feb 17, 2023
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197
1
Probability
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 ..
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Guest
Feb 17, 2023
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154
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Graphing
The graph of y = f(x) is shown below.
For each point (a,b) that is on the graph of y = f(x), the point ((a - 7)/2, (3b + 1)/4) is plotted, forming the graph of another function y = g(x). As an example, the point
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Guest
Feb 17, 2023
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152
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Geometry
Help plz with geometry
In triangle ABC, the angle bisector of angle BAC meets AC at D. If angle BAC = 60, angle ABC = 60, and AD = 24, then find the area of triangle ABC.
Guest
Feb 17, 2023
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192
1
Counting
Help plz with counting
Find the number of ways of arranging the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 in a row so that the product of any two adjacent numbers is even or a mutliple of 3
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Guest
Feb 17, 2023
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163
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Precalc
Plz help with parametric equations
The position of a particle is given by the parametric equations
x = 1 + sin pi*t - cos pi*t
read more ..
Guest
Feb 17, 2023
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168
0
Geometry
In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = 1, OB = 1, OC = 1. Show that the
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Guest
Feb 17, 2023
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199
1
Counting
How to solve this
Catherine rolls a 6-sided die five times, and the product of her roll is . How many different sequences of rolls could there have been? (The order of the rolls matters.)
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Guest
Feb 17, 2023
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210
1
Expected value
What do I do here help me
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 ..
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Guest
Feb 17, 2023
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199
0
Counting
What do I do here
Sam wants to color the three sides of an equilateral triangle. He has two different colors to choose from. In how many different ways can Sam color the sides of the triangle? (Two colorings are
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Guest
Feb 17, 2023
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186
1
Counting
Sam writes down the numbers 1, 2, 3, ..., 99
(a) How many digits did Sam write, in total?
(b) Sam chooses one of the digits written down, at random. What is the probability that Sam chooses a 0?
(c) What is the sum of all the
read more ..
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Guest
Feb 17, 2023
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161
0
Binomial
Need help with binomial
The function f(n) satisfies
binom(2n)n - binom(2n + 1)(2n) = f(n) *binom(2n + 1)(n + 1)
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Guest
Feb 17, 2023
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173
0
ixl write quadratic funtion
A parabola opening up or down has vertex (0,1) and passes through (–6,–8). Write its equation in vertex form.
Simplify any fractions.
Guest
Feb 17, 2023
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198
1
You and two friends are splitting a pizza. You take`\frac{1}{3}`of the pizza. How much of the pizza is left?
You and two friends are splitting a pizza. You take 1/3 of the pizza. How much of the pizza is left?
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Guest
Feb 17, 2023
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175
0
Counting
Help plz with this
There are 97 students in South High School. South High School offers only Chinese and Spanish. There are more students in Chinese than in Spanish, and every student takes at least one language. If students
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Guest
Feb 17, 2023
0
199
1
Probability
I need the answer to this
Right triangle XYZ has legs of length XY = 12 and YZ = 6. Point D is chosen at random within the triangle XYZ. What is the probability that the area of triangle XYD is at most 20?
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Guest
Feb 17, 2023
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201
2
Counting
Miyu is giving out 9 identical chocolates to her 7 friends, including Dhruv. All possible distributions are equally likely. What is the probability that Dhruv gets exactly 2 chocolates?
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Guest
Feb 17, 2023
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218
2
halp
Let
and
find
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Guest
Feb 17, 2023
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211
1
how to find the number of combinations and factorials
how to find the number of combinations and factorials
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Guest
Feb 17, 2023
0
204
1
Algebra
Factor (ab + ac + bc)^3 - a^3*b^3.
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Guest
Feb 17, 2023
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189
3
Sequence
Help how to do this
Cai writes down the list of positive integers, excluding squares and cubes and all perfect powers. His sequence starts
2, 3, 5, 6, 7, 10, 11, ...
What is the 100th term in Cai's list?
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Guest
Feb 17, 2023
«
latest
9512
9511
..
8772
8771
8770
8769
8768
..
2
1
»
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