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Post New Question
All Questions
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237827 Questions
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165
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Counting
Need help quick
(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)
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Guest
Feb 13, 2023
0
167
1
Counting
Help I use binomials
A fair coin is tossed 12 times. How many different sequences of tosses could there have been, if the number of tosses was at least
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Guest
Feb 13, 2023
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169
0
Coefficient
Help plz help
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 13, 2023
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206
1
MATH
Select all numbers that are solutions to the inequality w < 0.
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Guest
Feb 13, 2023
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173
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Parametric equations
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
Feb 13, 2023
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191
0
parametric equations
The position of a particle is given by the parametric equations
x = sqrt(t^2 + t)
y = t^2 - 1
as t ranges over all real numbers.
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Guest
Feb 13, 2023
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209
1
Geometry
Help with angles on this
Triangle ABC is a right triangle with angle BAC= 90 degrees and angle B > angle . Suppose AP is an altitude of the triangle, AQ is an angle bisector of the triangle, and AR is a median of
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Guest
Feb 13, 2023
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181
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Counting
I don't know how
In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color, and at lest three of the squares are red. How many ways are there to
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Guest
Feb 13, 2023
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155
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Algebra
Plz help with system question
Find the ordered quintuplet (a,b,c,d,e) that satisfies the system of equations
a + 2b + 3c + 4d + 5e = 41
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Guest
Feb 13, 2023
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189
1
Counting
At a meeting, five scientists, two mathematicians, five journalists, two biologists, and three politicians are to be seated around a circular table. How many different arrangements are possible if the scientists must all sit together (in
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Guest
Feb 13, 2023
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199
1
Math Quiz: Volumes of Cones 1.5.5
find the height of a cone with a diameter of 12 m whose volume is 340 m₃. Use 3.14 for π and round your answer to the nearest meter.
Please help me with the answer.
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Guest
Feb 13, 2023
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198
0
Parametric equations
Plz help with parametric equations
The position of a particle is given by the parametric equations
x = 1 + sin pi*t - cos pi*t
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Guest
Feb 13, 2023
0
175
0
help math quiz
Use the given information to fill in the number of elements for each region in the Venn diagram.
n(A)=19,
n(B)=16
n(A∩B)=12,
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Guest
Feb 13, 2023
0
179
0
what is 1000*1000 divided by 100000000000000*pi
what is 1000*1000 divided by 100000000000000*pi
Guest
Feb 13, 2023
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231
1
HELP ASAP!!
Let $a_1, a_2, a_3, \dots$ be a non-constant arithmetic sequence. (That is, not all the terms are the same.) Suppose that $a_4, a_7, a_{12}$ form a geometric sequence. If $a_7 = 30$, what is $a_1$?
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Guest
Feb 13, 2023
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213
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 13, 2023
0
218
1
Counting
Can anyone help plz?
A debate team consists of 5 freshmen and 4 sophomores. (Everyone is distinguishable.) In how many ways can they stand in line, so at least two of the sophomores are standing next to each other, and
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Guest
Feb 13, 2023
Feb 12, 2023
+1
241
3
+132
I wanted to post my answer for this
I saw this post and wanted to post my answer to it. https://web2.0calc.com/questions/consider-a-particle-following-the-parametric-equations_2 I got: 1/6, 5/6, 13/6, and 17/6
Note that it can't be 7/6 or 11/6 because that would result in sin(\pi
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Saphia1123
Feb 12, 2023
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201
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
Feb 12, 2023
0
211
1
Geometry
I need help with triangles
In triangle PQR, M is the midpoint of PQ. Let X be the point on QR such that PX bisects angle QPR, and let the perpendicular bisector of PQ intersect AX at Y. If PQ = 36, PR =
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Guest
Feb 12, 2023
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