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All Questions
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237644 Questions
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193
1
Coefficient
How do I find coefficient
Find the coefficient of u^2 v^9 in the expansion of (2u - 3v + u^2 - v^2)^9.
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Guest
Feb 5, 2023
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184
1
Counting
I need help with counting
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?
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Guest
Feb 5, 2023
0
175
0
Probability
Help I'm bad at geo
Let PQR be an equilateral triangle, centered at O. A point X is chosen at random inside the triangle. Find the probability that X is closer to O than to any of the sides. (In other
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Guest
Feb 5, 2023
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162
0
Expected value
Help how do i do this
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.
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Guest
Feb 5, 2023
0
181
0
Expected value
Help with this plz
In a series of coin flips, a run is a series of consecutive coin flips that are all the same. For example, in the sequence
the red letters form a run.
If a fair coin is flipped two times, what is
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Guest
Feb 5, 2023
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157
0
Counting
Help with counting pleez
Find the number of ways of placing 4 balls in 5 boxes if the balls are indistinguishable and the boxes are distinguishable.
Guest
Feb 5, 2023
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174
1
Algebra
I need to solve equations
A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 50% magical syrup
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Guest
Feb 5, 2023
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188
1
Counting
Help with counting help
In how many ways can you distribute 10 indistinguishable balls among 8 distinguishable boxes, if at least one of the boxes must be empty?
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Guest
Feb 5, 2023
0
208
2
+24
Please Help - GEOMETRY
In the diagram below, we have , , , and . Find .
https://latex.artofproblemsolving.com/2/3/6/23637a6b4f6218e50583ee5b39bcc517771d75a8.png
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puzzle70
Feb 5, 2023
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170
0
Precalc
Help I dont know trig
(a) In triangle ABC, angle BCA = pi/4, AB = 5, and AC = 6. Find the sum of all distinct possible values of BC If there are no possible values, enter 0.
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Guest
Feb 5, 2023
+1
158
0
geometry
Why tangent circles
The two circles below are externally tangent. A common external tangent intersects line PQ at R. Find QR.
Guest
Feb 5, 2023
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208
2
help needed
A 3-digit number is divided by the sum of its digits. What is the smallest possible quotient?
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Guest
Feb 5, 2023
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180
1
Counting
I need help with this grid
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
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Guest
Feb 5, 2023
0
205
1
Counting
What to do about counting
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
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Guest
Feb 5, 2023
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177
1
Digits
Not sure what to do here
Find the number of six-digit numbers, where the sum of the digits is divisible by 8.
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Guest
Feb 5, 2023
0
177
0
Exponential functions
Im so confused by this
Select all the correct statements. (For this problem, we assume that an exponential function is of the form ka^x where a > 0)
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Guest
Feb 5, 2023
0
182
1
Algebra
Need to solve for c
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
Feb 5, 2023
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168
0
Algebra
Need to solve for x
Let x be a real number such that 625*x = 64. Then 125*x = ___ sqrt(____)
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Guest
Feb 5, 2023
0
166
0
Function
Find domain and range.
Find the domain and range of the function f(x) = 2(2 - 3x).
Guest
Feb 5, 2023
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164
0
Geometry
Help plz with right triangles
Let ABC be a right triangle, and let H be the point on side AB so that CH is perpendicular to AB. Prove that (x + h)^2*(y + h)^2 = (a + b)^4.
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Guest
Feb 5, 2023
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