All Questions ⁺⁰230662 Questions

0

85

0

Expected value

I need help

The grid below is made up of line segments, like the line segment in red.
read more ..

Guest Jan 29, 2023

0

80

0

Counting

Help with this plz

Find the number of paths from P to Q, where each step is to the right or up.

Guest Jan 29, 2023

0

86

0

Counting

Need help plz I need help

(a) In how many ways can you distribute 4 distinguishable balls among 3 indistinguishable boxes?
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Guest Jan 29, 2023

0

85

0

Counting

Plz help with this

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 Jan 29, 2023

0

109

1

Probability

Help I need help plz

In the SuperLottery, three balls are drawn (at random, without replacement) from white balls numbered from 1 to 12, and one SuperBall is drawn (at random) from red balls numbered from 13 to 20. read more ..

Guest Jan 29, 2023

Jan 28, 2023

0

105

1

Probability

Can you compute probability

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 a freshman read more ..

Guest Jan 28, 2023

0

116

1

Algebra

Help I need algebra help

Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 120 meters per hour when walking across flat ground, and 180 meters per hour read more ..

Guest Jan 28, 2023

0

86

0

Inequality

Plz help prove this inequality

(a) Show that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)^2 (c^4 + d^4)(e^4 + f^4) >= 32abcdef.
(b) Show that if a, b, c, d, e, f are nonnegative real read more ..

Guest Jan 28, 2023

0

96

1

Counting

What to do here

Find the number of ways of choosing three points from the grid below, so that they form an isosceles right triangle.

Guest Jan 28, 2023

0

87

0

Algebra

Help this is hard

Let S be the set of all real numbers of the form
a1/3 + a2/3^2 + a3/3^3 + ....
where a_i \in {0, 1, 2} for all i. read more ..

Guest Jan 28, 2023

0

86

0

Counting

Help needed with counting

Find the number of solutions to
x_1 + x_2 + x_3 + x_4 + x_5 + x_6 + x_7 + x_8 + x_9 + x_10 <= 2 read more ..

Guest Jan 28, 2023

0

88

0

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 = read more ..

Guest Jan 28, 2023

0

82

0

geometry

Help I need help

Find the circumradius of triangle ABC. Find the inradius of triangle ABC.
read more ..

Guest Jan 28, 2023

+1

113

1

Algebra

How to solve inequalities

Arrange the following numbers in increasing order (smallest first, biggest last):
read more ..

Guest Jan 28, 2023

+1

124

1

Binomials

Plz help with this

Fill in the blanks to make the equation true (Each blank should contain a positive integer.) read more ..

Guest Jan 28, 2023

0

125

1

+163

repost (trig)

could somebody take a look at this? I got random guest answered and then I got a link with its description in russian that I cant open.
https://web2.0calc.com/questions/let-be-an-angle-such-that-p-is-the-terminal-point-of_1#r4

YourAverageDummy Jan 28, 2023

0

109

1

Probability

How do you compute this

My sock drawer contains two red socks, two white socks, and two blue socks. For three days in a row, I pull out two socks out of my sock drawer at random. What is the probability read more ..

Guest Jan 28, 2023

0

85

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 Jan 28, 2023

0

84

0

Counting

How this work

We define a bow-tie quadrilateral as a quadrilateral where two sides cross each other. An example of a bow-tie quadrilatera is shown below. distinct points are chosen on a circle. We draw all read more ..

Guest Jan 28, 2023

+1

135

3

Algebra

Help can anyone explain this to me

A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 50% magical syrup by read more ..

Guest Jan 28, 2023

0

100

1

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 Jan 28, 2023

0

83

0

Probability

Help meee what do I do here

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, read more ..

Guest Jan 28, 2023

0

123

1

+23

help pls

A diagonal of a square has the same length as a diagonal of a rectangle. The area of the rectangle is 60% of the area of the square. What is the ratio of the longer side to the shorter side of the rectangle?

uwuoniichan Jan 28, 2023

0

107

0

Probability

Help I have problem

Let PQR be an equilateral triangle, centered at O. A point X is chosen at random inside the triangle. Find the probability that X is closer to O than to any of the sides. (In other read more ..

Guest Jan 28, 2023

0

100

1

Counting

Help I have spent a long time on this

I run a book club with n people, not including myself. Every day, for 100 days, I invite members in the club to review a book. What is the smallest positive integer n so that I can avoid ever read more ..

Guest Jan 28, 2023

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