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All Questions
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216172 Questions
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122
1
Modular Arithmetic
What is the units digit of $3^{2^{1000}} + 1$? (The 1000th Fermat prime)
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Guest
Nov 27, 2021
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199
1
A bag contains 9 hazelnuts, 10 almonds and 5 walnuts. If 6 are drawn at random, what is the probability all six will be the same nut?
A bag contains 9 hazelnuts, 10 almonds and 5 walnuts. If 6 are drawn at random, what is the probability all six will be the same nut?
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Guest
Nov 27, 2021
0
129
1
Interest
Joseph borrows $10000 from his sister Katie at an annual interest rate of 10%. If the interest is compounded twice a year, how much does he owe after 24 months? Give your answer in dollars.
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Guest
Nov 27, 2021
0
123
1
Number Theory
The Lucas sequence is the sequence 1, 3, 4, 7, 11,... where the first term is 1, the second term is 3 and each term after that is the sum of the previous two terms. What is the remainder when the 100th term of the sequence is divided by 20?
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Guest
Nov 27, 2021
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155
1
Geometry
Lines AB and CD intersect at a point O in such a way that ∠DOB = 5∠COB. What is ∠AOD?
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Guest
Nov 27, 2021
0
181
2
trig problem
In right triangle ABC, angle B is 90 degrees. If tan C = 2. Find cos A. No caculator
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Guest
Nov 27, 2021
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125
2
Counting
How many multiples of 9 are between 100,000 and 100,185?
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Guest
Nov 27, 2021
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138
1
help probability
Rolling four standard dice, what is the probability that the product of the four results is even and a multiple of 3?
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Guest
Nov 27, 2021
0
199
3
+99
MATH HELP PLS
Can someone please help me on this math problem
Given FIND
read more ..
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Jxalskdfjarkfhqwio3r
Nov 27, 2021
0
151
2
Polygon problem
In concave equilateral pentagon ABCDE, angle A = angle B = 100 degrees. What is the degree measure of E?
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Guest
Nov 27, 2021
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178
1
Algebra problem
Noah was asked to compute the product of two numbers. He misread the problem and entered the sum of the two numbers instead. Luckily he still got the right answer. One of the two numbers is 6. What is the other number?
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Guest
Nov 27, 2021
0
130
1
Probability
A card is chosen at random from a standard deck of 52 cards. What is the probability that it is a King or spade (or both)?
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Guest
Nov 27, 2021
Nov 26, 2021
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97
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help with Algebra
Let x represent the sum of the first 25 positive odd integers. Let y represent the sum of the next 25 positive even integers. What is the value of y - x?
Guest
Nov 26, 2021
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96
0
Counting question
Ten people are sitting around a round table. Three of them are chosen at random to give a presentation. What is the probability that at least two of the three chosen people were sitting in consecutive seats?
Guest
Nov 26, 2021
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194
3
+99
MATH HELP PLS
Can someone please help me on this problem
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Jxalskdfjarkfhqwio3r
Nov 26, 2021
0
144
1
help with system
For what ordered pair (a, b) are there infinite solutions (x, y) to the system
4x+ay=-8,
12x+y=b
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Guest
Nov 26, 2021
0
205
1
NEED HELP!!!
There is only one set of five prime numbers that form an arithmetic sequence with a common difference of 6. What is the sum of those five prime numbers?
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Guest
Nov 26, 2021
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111
0
Graphing
Given that the point (9,7) is on the graph of y=f(x), there is one point that must be on the graph of 2y=2*f(2x)+2. What is the sum of coordinates of that point?
Guest
Nov 26, 2021
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163
1
Binomial Theorem
When we expand (2x+1/2-1/3)^6, what is the coefficient on the x^4 term?
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Guest
Nov 26, 2021
0
151
2
if u got 1 dolloar each 3 seconds for 19 min how much would it be?
if u got 1 dolloar each 3 seconds for 19 min how much would it be?
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Guest
Nov 26, 2021
+14
266
14
+483
help with intermediate algebra
For certain positive integers and the set of complex numbers that satisfy is equivalent to the set of complex numbers that satisfy , where is not divisible by the square of a prime. Find .
read more ..
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abcdefghijklmnopqrst
Nov 26, 2021
-1
214
2
+192
Algebraic Expression for the Nth Term! So hard!
Write an Algebraic expression for the Nth term in the following two sequences.
a. 4, 6, 10, 18, ... n
read more ..
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MathyGoo13
Nov 26, 2021
0
154
2
Parabola
Find the vertex of the graph of the equation y=-2x^2+18x-15.
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Guest
Nov 26, 2021
0
105
0
help
Solve the following trigonometric equation over the given interval.
Determine EXACT solutions. Show all work to earn full marks.
2cos2x + cosx − 1 = 0, xε [0, 2π]
Guest
Nov 26, 2021
0
122
0
Algebra
The roots of x^2 + 8x + 4 are the same as the roots of Ax^2 + x + B . What is A + B?
Guest
Nov 26, 2021
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