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All Questions
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237689 Questions
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181
1
Counting
Plz I need help
Let n be a positive integer. Let k be a positive integer.
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Guest
Mar 4, 2023
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156
0
Counting
(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.)
(b) Find the number of ways that Magnus can give out 20 identical stickers to 5 of
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Guest
Mar 4, 2023
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152
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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?
Guest
Mar 4, 2023
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176
0
The difference between the number of adult cats at the pet care center on sunday and tuesday is
The difference between the number of adult cats at the pet care center on sunday and tuesday is
Guest
Mar 4, 2023
0
196
2
+13
Geometry
In the circle below, AB || CD, AD is a diameter of the circle, and AD = 36".What is the length of AB in inches? Express your answer in terms of pi. I got 18 * sin(80)/sin(50) but I do not know how to express it using pi.
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iambog
Mar 4, 2023
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148
5
+13
Urgent!
1. 3 students are running for a class president in a class of 70 students. How many different vote counts are possible if some student(s) do not vote.
2. In how many ways can we distribute 7 pieces of identical taffy and 8 pieces of identical
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iambog
Mar 4, 2023
0
155
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
Mar 4, 2023
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167
0
Geometry
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 = 22, QR = 26, and MY = 8, then find the area
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Guest
Mar 4, 2023
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156
0
Coordinates
Points A, B, and C are given in the coordinate plane. There exists a point Q and a constant k such that for any point P,
PA^2 + PB^2 + PC^2 = 3PQ^2 + k
If A = , B = , and C = , then find the constant k.
Guest
Mar 4, 2023
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162
0
Amongus
sus ?
Guest
Mar 4, 2023
0
164
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 4, 2023
0
167
0
Algebra
Need help with these
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
Mar 4, 2023
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156
0
Inequality
Prove that if a, b, and c are positive real numbers, then
sqrt(a^2 + ab + b^2) + sqrt(a^2 + ac + c^2) + sqrt(b^2 + bc + c^2) >= sqrt(3) (sqrt(ab) + sqrt(ac) + sqrt(bc))
When does equality occur?
Guest
Mar 4, 2023
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168
0
Counting
I need help here plz
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
Mar 4, 2023
0
155
0
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
Mar 4, 2023
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186
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 4, 2023
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161
0
Complex numbers
help need help with this
Describe all solutions to zw - 3w - 2iw + 4z = 7iw + 5w + 11iz - 13 + 15i
where z and w are complex numbers.
Guest
Mar 4, 2023
0
156
0
Algebra
Need to work with variables
Let a and b be real numbers such that a^3 + 3ab^2 = 679 and a^3 - 3ab^2 = 673. Find a - b.
Guest
Mar 4, 2023
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171
0
Counting
I don't get this
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 considered
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Guest
Mar 4, 2023
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154
0
Probability
Need help soon on this
The Boomtown Bears are playing against the Tipton Toros in a baseball tournament. The winner of the tournament is the first team that wins three games. The Bears have a probability of of winning each game. Find
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Guest
Mar 4, 2023
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