Question

What are the two values of $k$ such that the line $y=kx-4$ crosses $x^2+y^2=4$ at one distinct point?

score 52 · Answer 1 · 2026-04-16 01:30:30

52

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What are the two values of $k$ such that the line $y=kx-4$ crosses $x^2+y^2=4$ at one distinct point?

Published on 16 Apr 2026 - 1:30

score 138 · Answer 2 · 2026-04-14 02:22:00

138

Views

Proof that there is a point inside an acute-angled triangle so that perpendiculars dropped to the sides will form vertices of equilateral triangle

Published on 14 Apr 2026 - 2:22

score 37 · Answer 3 · 2026-04-13 07:53:24

37

Views

A railroad track connects a station A to another K passing successively through stations from A to K

Published on 13 Apr 2026 - 7:53

score 510 · Answer 4 · 2026-04-14 20:39:51

510

Views

We roll a die 12 times. a) What is the probability that we get exactly 3 times the result greater than or equal to 4? .....

Published on 14 Apr 2026 - 20:39

score 85 · Answer 5 · 2026-04-16 00:27:47

85

Views

An airplane has 4 engines. If each of an airplane's engines has a 0.01 probability of stalling....

Published on 16 Apr 2026 - 0:27

score 47 · Answer 6 · 2026-03-26 04:49:42

47

Views

Horizontal SUVAT problem (AS Level)

Published on 26 Mar 2026 - 4:49

score 127 · Answer 7 · 2026-04-11 19:24:03

127

Views

Real World Problem - Groups Visiting Various Stations

Published on 11 Apr 2026 - 19:24

score 35 · Answer 8 · 2026-04-11 10:01:25

35

Views

We administer a vaccine against a virus with the following rules....

Published on 11 Apr 2026 - 10:01

score 44 · Answer 9 · 2026-04-12 21:27:26

44

Views

We administer a drug only once, after the onset of symptoms of an illness....

Published on 12 Apr 2026 - 21:27

score 70 · Answer 10 · 2026-04-17 13:05:30

70

Views

The Probability Calculus course exam has 3 questions and lasts 3 days....

Published on 17 Apr 2026 - 13:05

score 880 · Answer 11 · 2026-04-16 15:13:53

880

Views

We have a coin, which has probability of heads, P(heads) = p, and probability of tails P(tails) = 1 − p = q.....

Published on 16 Apr 2026 - 15:13

score 149 · Answer 12 · 2026-04-16 05:48:10

149

Views

We have a box with m blue balls and n red balls ($n \lt m$). We bet r dollars that we will randomly pick a red ball....

Published on 16 Apr 2026 - 5:48

score 353 · Answer 13 · 2026-04-14 04:31:56

353

Views

The concentration of a drug in the blood stream after $t$ hours of being ...

Published on 14 Apr 2026 - 4:31

score 124 · Answer 14 · 2026-04-15 14:55:31

124

Views

Can we prove that the equation $2^n+1=5^m$ has no integral solution other than $(2, 1)$?

Published on 15 Apr 2026 - 14:55

score 312 · Answer 15 · 2026-04-12 21:49:35

312

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Why there exists no measure space $(X,\mathcal S,\mu)$ such that $\{\mu(E):E\in \mathcal S\}=[0,1)$.

Published on 12 Apr 2026 - 21:49

List Question

What are the two values of $k$ such that the line $y=kx-4$ crosses $x^2+y^2=4$ at one distinct point?

Proof that there is a point inside an acute-angled triangle so that perpendiculars dropped to the sides will form vertices of equilateral triangle

A railroad track connects a station A to another K passing successively through stations from A to K

We roll a die 12 times. a) What is the probability that we get exactly 3 times the result greater than or equal to 4? .....

An airplane has 4 engines. If each of an airplane's engines has a 0.01 probability of stalling....

Horizontal SUVAT problem (AS Level)

Real World Problem - Groups Visiting Various Stations

We administer a vaccine against a virus with the following rules....

We administer a drug only once, after the onset of symptoms of an illness....

The Probability Calculus course exam has 3 questions and lasts 3 days....

We have a coin, which has probability of heads, P(heads) = p, and probability of tails P(tails) = 1 − p = q.....

We have a box with m blue balls and n red balls ($n \lt m$). We bet r dollars that we will randomly pick a red ball....

The concentration of a drug in the blood stream after $t$ hours of being ...

Can we prove that the equation $2^n+1=5^m$ has no integral solution other than $(2, 1)$?

Why there exists no measure space $(X,\mathcal S,\mu)$ such that $\{\mu(E):E\in \mathcal S\}=[0,1)$.

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