All Questions ⁺⁰237737 Questions

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160

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Probability

I don't think this problem is that hard, but I can't get it.

A standard six-sided die is rolled twice. What is the probability that the product of the rolls is 1, 2, or 3?

Guest Feb 16, 2023

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160

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Counting

Plz anyone help with 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.)
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Guest Feb 16, 2023

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206

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x = {A(1+B(1-C))^n-A\over B(1-C)}*(1+B(1-C))

How to get "A"?

Guest Feb 16, 2023

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165

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(x+10)^3

Guest Feb 16, 2023

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172

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Number Theory

How many of the divisors of 8! are larger than 7!?

According to the solution of the problem 8!=7!*8 so the cofactor (8) will be smaller than 8, so 1-7. I don't understand this because 7 and 1 shouldn't work because there is only one read more ..

Guest Feb 16, 2023

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222

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Geometry

Plz help with geometry problem

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 16, 2023

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170

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Binomials

(a) Simplify (n/k)/(n/(k - 1))

(b) For some positive integer n, the expansion of (1 + x)^n has three consecutive coefficients a, b, c that satisfy 1:8:28. What must n be?

Guest Feb 16, 2023

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159

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counting

Help how are you supposed to do this

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 read more ..

Guest Feb 16, 2023

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Tomato paste is sold in a cylindrical can. The can has a radius of 1.5 inches and a height of 4.8 inches. What is the volume of the can? (Ro

Tomato paste is sold in a cylindrical can. The can has a radius of 1.5 inches and a height of 4.8 inches. What is the volume of the can? (Round your answer to the nearest hundredth.)

Guest Feb 16, 2023

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212

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+132

Polar Coordinates Help

Let $A, B, C,$ and $D$ be the points below. The points $A, B, C, D$ have polar coordinates $(4, 1), (4, -7), (-4, -9), (4, 2)$ in some order, where the angles are in radians. Order\[A, B, C, D\]to match the polar coordinates below.
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Saphia1123 Feb 16, 2023

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195

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Camille knew that a triangle had one side

Camille knew that a triangle had one side with a length of 16 inches and another side with a length of 20 inches. She did not know the length of the third side, but she did know that the perimeter was five times the length of the unknown side. How long read more ..

Guest Feb 16, 2023

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202

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HELP

What is the value of x for which (2008+x)^2 = x^2 ????

Guest Feb 16, 2023

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198

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Counting

Find the number of positive integers that satisfy both the following conditions:
Each digit is a 1 or a 2 or a 3
The sum of the digits is 5

Guest Feb 16, 2023

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157

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Factor

Factor (ab + ac + bc)^3 - a^3*b^3.

Guest Feb 16, 2023

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168

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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 Feb 16, 2023

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167

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Coefficient

Help plz help

Find the coefficient of u^2 v^9 in the expansion of (2u - 3v + u^2 - v^2)^9. read more ..

Guest Feb 16, 2023

Feb 15, 2023

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200

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inverse modulo

What is 2^{-1} + 2^{-2} + 2^{-3} + 2^{-4} + 2^{-5} + 2^{-6} mod{13}?
Express your answer as an integer from 0 to 12, inclusive.

Guest Feb 15, 2023

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175

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Precalc

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. read more ..

Guest Feb 15, 2023

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181

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Hey, got a question.

Hey, got a question.
How to get A out of this?
I mean the formula.
read more ..

Guest Feb 15, 2023

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168

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Coin tosses

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

Guest Feb 15, 2023

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170

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Geometry

In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = 1, OB = 1, OC = 1. Show that the read more ..

Guest Feb 15, 2023

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Question Use a graphing calculator or other technology to answer the question. Which quadratic regression equation best fits the data set?

Responses yˆ=0.728x^2−20.213x+179.246 yˆ=0.728x^2+20.213x+179.246 yˆ=179.246x^2−20.213x+0.728 yˆ=0.728x^2+0.564x+179.246
x y
4 109
6 88 read more ..

Guest Feb 15, 2023

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212

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Minor arc $AB$ in the diagram is $30^\circ$ and the radius of the circle is $6.$ Find the area of circular segment $AB.$ [asy] size(6cm);

Guest Feb 15, 2023

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176

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find the equation of the line that cuts the y-axis at y=-9 and whose slope is 1/7

find the equation of the line that cuts the y-axis at y=-9 and whose slope is 1/7

Guest Feb 15, 2023

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170

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Geometry

Need help with a geometry proof

Let ABC be a right triangle, and let H be the point on side AB so that CH is perpendicular to AB. Prove that (x + h)^2*(y + h)^2 = (a + b)^4.

Guest Feb 15, 2023

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