All Questions ⁺⁰237644 Questions

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172

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Probability

Help I need help plz

A member of the junior varsity swim team will be elected as President. Each member is equally likely to be elected. The probability that a sophomore is elected is the probability that read more ..

Guest Feb 5, 2023

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190

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Algebra

Plz help with this algebra

Let S be the set of all real numbers of the form read more ..

Guest Feb 5, 2023

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220

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1+3+5+...+763= find N? how do i slove this?

1+3+5+...+763= find N?

Guest Feb 5, 2023

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172

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Counting

I need to count paths here

Find the number of paths from A to I, if each step must be in a right-ward direction. (For example, one possible path is A C D E F G H I) read more ..

Guest Feb 5, 2023

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163

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Geometry

Help I really need this

In the diagram below, PQRS is a parallelogram with a perimeter of 26 and an area of 28. What is the perimeter of rectangle OSTQ? Include an explanation of how you solved the problem.
<read more ..

Guest Feb 5, 2023

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184

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Counting

Need help lots

There is a group of five children, where two of the children are twins. How many ways can I distribute 10 identical pieces of candy to the children, if the twins must get an equal amount of candy?
<read more ..

Guest Feb 5, 2023

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168

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Counting

I cant get this

In the olympic women's skating competition, the gold medal goes to first place, silver to second, and bronze to third. If there are skaters, including Americans, in how many ways can the medals be awarded to read more ..

Guest Feb 5, 2023

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174

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Counting

How to count 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 Feb 5, 2023

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172

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Counting

I need help with counting

read more ..

Guest Feb 5, 2023

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174

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Probability

Help plz with this

A bag contains five white balls and three black balls. Your goal is to draw two white balls.
read more ..

Guest Feb 5, 2023

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187

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Expected value question

Help with this plz

There are a number of paths that go from A to B in the grid, where every step goes to the right or up. If we choose a line segment at random, then what is the expected number of paths that read more ..

Guest Feb 5, 2023

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157

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Counting

Help hard problem

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 read more ..

Guest Feb 5, 2023

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168

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Math Question

If 5 cats catch 5 rats in 5 minutes how many cats are needed to catch 72 rats in 2 hours?

Guest Feb 5, 2023

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193

1

PLZ HELP ME

I've been trying this for hours, and getting nowhere.

In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = 2. Find PQ.

Guest Feb 5, 2023

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166

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HELP ASAP

Can anyone give me some direction here?

In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = 2. Find PQ.

Guest Feb 5, 2023

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154

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Complex numbers

I could really use some help on this problem, I'm really stuck.

Describe all solutions to zw - 3w - 2iw + 4z = 7iw + 5w + 11iz - 13 + 15i
where z and w are complex numbers.

Guest Feb 5, 2023

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201

2

Sorta confused, help would be much appreciated.

A coin is tossed 12 times. How many different sequences of tosses could there have been, if the number of heads was at least 10

I've already tried to do (12 choose 10)+(12 choose 11)+1, but I'm not sure exactly what to do since it read more ..

Guest Feb 5, 2023

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187

1

HELP ASAP!

The points of this 3-by-3 grid are equally spaced horizontally and vertically. How many different sets of three points of this grid can be the three vertices of an isosceles triangle?

Guest Feb 5, 2023

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198

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HELP ASAP

Two triangles are considered the same if they have the same three side lengths. Find all possible values of P such that there is only 1 possible triangle with integer side lengths and perimeter P.

Guest Feb 5, 2023

Feb 4, 2023

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190

1

PLS HELP

Let a and b be the roots of

Find

Guest Feb 4, 2023

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178

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Probability

Help I need help

Valeria has three coins, each of which has a probability of 1/2 of coming up heads. On her first turn, she flips all three coins. If all three come up heads, then she stops. Otherwise, for her second turn, she read more ..

Guest Feb 4, 2023

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161

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Counting

Help how do you do 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 read more ..

Guest Feb 4, 2023

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