All Questions ⁺⁰238450 Questions

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228

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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206

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 read more ..

Guest Mar 4, 2023

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199

0

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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221

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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

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246

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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171

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 read more ..

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iambog Mar 4, 2023

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199

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 read more ..

Guest Mar 4, 2023

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209

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 read more ..

Guest Mar 4, 2023

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193

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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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205

0

Amongus

Guest Mar 4, 2023

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212

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

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216

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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202

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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213

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 read more ..

Guest Mar 4, 2023

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200

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 read more ..

Guest Mar 4, 2023

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240

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.

Guest Mar 4, 2023

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203

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

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203

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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221

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 read more ..

Guest Mar 4, 2023

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201

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 read more ..

Guest Mar 4, 2023

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