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All Questions
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231326 Questions
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81
1
deez
how do you do x3+y3+z3=k, with k being all the numbers from one to 100
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Guest
Mar 14, 2023
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64
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Graphing
What is the smallest distance between the origin and a point on the graph of y = 1/2*(x^2 - 8).
Guest
Mar 14, 2023
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80
1
counting
Help how do I count this
Find the number of six-digit numbers, where the sum of the digits is divisible by 8.
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Guest
Mar 14, 2023
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71
0
counting
You are given the 4 x 4 grid below.
(a) Find the number of ways of placing 8 counters in the squares (at most one counter per square), so that each row contains exactly two counters.
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Guest
Mar 14, 2023
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72
0
binomials
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
Mar 14, 2023
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72
0
Exponential functions
Need help with graphs
The graph of the exponential function f(x) is shown below. Find f(x).
Guest
Mar 14, 2023
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93
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
Mar 14, 2023
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81
0
Exponential functions
Help the class didn't cover this
Each graph below is the graph of an exponential function of the form ka^x (where a > 0). Match each graph with the correct option.
Guest
Mar 14, 2023
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76
0
Precalc
The position of a particle is given by the parametric equations
x = 3 + 2 sin 2t - cos t
y = 4 + cos 4c + sin 3t
as t ranges over all real numbers.
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Guest
Mar 14, 2023
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85
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
Mar 14, 2023
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73
0
Algebra
How do I do this
Find the constant term in the expansion of (2z - 1/(z*sqrt(z)) + 1)^4.
Guest
Mar 14, 2023
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66
0
Counting
Help how are you supposed to do 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
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Guest
Mar 14, 2023
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72
0
Counting
In how many ways can the numbers 1 through 5 be entered once each into the five boxes below so that all the given inequalities are true?
Guest
Mar 14, 2023
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76
0
Counting
Help I need to count this
Catherine rolls a standard 6-sided die five times, and the product of her rolls is . How many different sequences of rolls could there have been? (The order of the rolls matters.)
Guest
Mar 14, 2023
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92
1
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
Mar 14, 2023
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84
3
Probability
A box contains 24 tiles. Each tile has certain properties:
Each tile is made of wood or plastic.
Each tile is red, yellow, or blue.
Each tile is a triangle, square, pentagon, or circle.
There is exactly one tile for each combination
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Guest
Mar 14, 2023
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91
1
Algebra
Let r be a root of x^3 - 2x + 5 = x^3 - x^2 + 9. Show that none of r, r^2, or r^3 is irrational.
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Guest
Mar 14, 2023
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80
0
precalc
In triangle PQT, R is on side PT such that QR = QP. Also, QS is an altitude, and QT = 10. The values of tan RTQ, tan SQR, tan SQT form an arithmetic progression, and the values of cot SQT, cot RQT, cot SQR form a geometic progression.
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Guest
Mar 14, 2023
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83
1
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.
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Guest
Mar 14, 2023
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75
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geometry
Let B, A, and D be three consecutive vertices of a regular -gon. A regular heptagon is constructed on AB with a vertex C next to A Find angle BCD in degrees.
Guest
Mar 14, 2023
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75
0
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
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Guest
Mar 14, 2023
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