trumpstinks

5 Questions
17 Answers

+1

1367

3

+51

Hard Probability Help pls

Five journalists, two baristas, and a sailor are to be seated around a circular table. How many different arrangements are possible if the journalists must all sit together (in five consecutive seats) and the baristas must sit next to each other? (Two seatings read more ..

trumpstinks Jun 12, 2020

0

623

2

+51

help please (complementary counting)

An 8 by 8 checkerboard has alternating black and white squares. How many distinct squares, with sides on the grid lines of the checkerboard (horizontal and vertical) and containing at least 4 black squares, can be drawn on the checkerboard?
https://latex.artofproblemsolving.com/8/7/a/87aa3c21435405d11d99ede53e0abc0dac7f4963.png read more ..

trumpstinks Jun 4, 2020

0

979

5

+51

HELP PLEASE!!!

Find all pairs $(x,y)$ of real numbers such that $x + y = 10$ and $x^2 + y^2 = 56$. For example, to enter the solutions $(2,4)$ and $(-3,9)$, you would enter "(2,4),(-3,9)" (without the quotation marks).

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trumpstinks May 16, 2020

+1

585

2

+51

PLEASE HELP SOON!!! THANKS

Find all complex numbers $z$ such that $z^4 = -4.$

trumpstinks May 11, 2020

0

2392

3

+51

PLEASE HELP!!!

Find the number of ordered pairs $(a,b)$ of integers such that \[\frac{a + 2}{a + 5} = \frac{b}{3}.\]

trumpstinks May 10, 2020