All Questions ⁺⁰238229 Questions

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190

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Counting

Joanna has six beads that she wants to assemble into a bracelet. Two of the beads have the same color, and the other four all have the same color. How many different ways can Joanna assemble her bracelet? (Two bracelets are considered identical if one can read more ..

Guest Mar 8, 2023

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189

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Function Composition

Consider function f. f(X)2X2 What is the value of(f*f)(x) ?

Guest Mar 8, 2023

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195

1

+1124

Graph

Hi friends,
The graph of passes through the points

Determine the values of m, n and k....I really have tried this for at least half an hour now...just do not get the right answers...except for k which read more ..

juriemagic Mar 8, 2023

+1

209

3

+1124

Cos (x)

Hi friends,

I trust you are all keeping well on this beautiful day...Please kindly explain if you would:
Why is Cos(x)=Cos(x+30)? read more ..

juriemagic Mar 8, 2023

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189

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Counting

I have to count these for class

There are 18 padded chairs around a circular table, and the chairs are numbered from 1 through 18 . How many ways can five people take their seats, so that no two people are adjacent? read more ..

Guest Mar 8, 2023

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191

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A company produces optical-fiber cable with a mean of 0.30.3 flaws per 100100 feet. What is the probability that there will be

A company produces optical-fiber cable with a mean of 0.30.3 flaws per 100100 feet. What is the probability that there will be exactly 55 flaws in 13001300 feet of cable? Round your answer to four decimal places. read more ..

Guest Mar 8, 2023

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218

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Probability

I need to 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 read more ..

Guest Mar 8, 2023

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185

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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 8, 2023

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230

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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 8, 2023

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192

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precalc

In triangle PQT, R is on side PT such that QR = QP. Also, QS is an altitude, and QT = 10. The values of tan CBE, tan CBE, tan SQT form an arithmetic progression, and the values of cot SQT, cot RQT, cot SQR form a geometic progression. read more ..

Guest Mar 8, 2023

Mar 7, 2023

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215

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Geometry Probability Question

Two points on a circle of radius 1 are chosen at random. Find the probability that the distance between the two points is at most 1.

I don't understand this problem. Can someone help?

Guest Mar 7, 2023

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209

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I don’t know

What is 8 divided by 126

Guest Mar 7, 2023

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182

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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 Mar 7, 2023

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190

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Algebra

Let r be a root of x^3 - 2x + 5 = x^3 - x^2 + 9. Show that none of r, r^2, or r^3 is irrational.

Guest Mar 7, 2023

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216

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+8

not sure if this is the right site for this one but worth a shot.

An analogue sensor has a bandwidth which extends from very low frequencies up to 8.75 kHz. Using the Sampling Theorem (Section 3.3.1), what is the minimum sampling rate (number of samples per second) required to convert the sensor output read more ..

LeoLandmass Mar 7, 2023

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232

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+8

inverse 4th power law throwing me off

A mobile base station (BS) in an urban environment has a power measurement of 25 µW at 325 m. If the propagation follows an inverse 4th power law (Section 3.2.2), what is a reasonable power value, in µW, to assume read more ..

LeoLandmass Mar 7, 2023

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184

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Algebra

Let a, b, and c be nonnegative real numbers. Prove that for all x >= 0,
(x + abc)^3 >= abc(x + a)(x + b)(x + c) >= (x + a + b + c)^3.

Guest Mar 7, 2023

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191

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x+x=8

x+x=8
x+x=13
x+x=6

Guest Mar 7, 2023

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