All Questions ⁺⁰238360 Questions

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Happy New Year 2020

off-topic

CalculatorUser Jan 1, 2020

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773

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1. How many ways are there to put 5 balls in 3 boxes if the balls are distinguishable and the boxes are distinguishable?

2. How many ways are there to put 5 balls in 3 boxes if the balls are not distinguishable read more ..

Guest Jan 1, 2020

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1175

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+21

help

Denali and Nate work for a dog walking business and are paid for each dog they walk. Denali is responsible for 16 dogs and Nate is responsible for 12 dogs. Under the company's new policy, they will be assigned or unassigned new dogs in groups of x dogs. read more ..

SunriseReprise Jan 1, 2020

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770

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ABCD is a square, AC & BD are its diagonals which intersect at O. Given angle BDL =angle LDC, and BL = 6cm. find the length of the line segment OK.

read more ..

Guest Jan 1, 2020

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1015

5

+100

halp

An ellipse whose axes are parallel to the coordinate axes is tangent to the x-axis at (4,0) and tangent to the y-axis at (0,1) Find the distance between the foci of the ellipse.

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Atroshus Jan 1, 2020

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675

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5 people are waiting in line for their picture to be taken. How many different ways can the line formed?

Guest Jan 1, 2020

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847

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+43

Already seen this question, but no one answered.

Here is the link to question: https://web2.0calc.com/questions/help_46463. PLease not only give me answer but give me the solution. You can answer to either the logic(where the link takes you, you will still be in web2.0calc) or here. Thanks for all read more ..

Zekken Jan 1, 2020

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645

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The lines x = 4y - a and y = 4x - b intersect at the point (1,2). What is a + b?

Guest Jan 1, 2020

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1026

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+21

help

Let and be two distinct polynomials with real coefficients such that the x-coordinate of the vertex of f is a root of g and the x-coordinate of the vertex of g is a root of f and both f and g have the same minimum value. If the read more ..

SunriseReprise Jan 1, 2020

Dec 31, 2019

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957

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+296

Help on Alg 2

A triangle is formed with one vertex at the vertex of the parabola y=x^2-1 and the other two vertices at the intersections of the line y=r and the parabola. If the area of the triangle is between 8 and 64 inclusive, find all possible values of r. Express read more ..

EpicWater Dec 31, 2019

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763

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+296

Please help

What is the sum of all numbers a for which the graph of y=x^2+a and the graph of y=ax intersect one time?

EpicWater Dec 31, 2019

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824

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+262

help

What is the residue modulo 13 of the sum of the modulo 13 inverses of the first 12 positive integers? Express your answer as an integer from 0 to 12, inclusive.

atlas9 Dec 31, 2019

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1543

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Help, i do not understand.

In poker, a pair is formed from two cards of the same rank. A hand with 5 cards is called two pairs if it has two pairs of cards of different ranks, and a fifth card that does not match either pair. (For example, the hand KK338 has two read more ..

Guest Dec 31, 2019

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867

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+39

Fastest way to generate big primes

Is there some software that´s able to generate primes from 000000000000000000000000000000 to 999999999999999999999999999999 very fast?

MathKing Dec 31, 2019

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872

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+39

Simplify prime number

I have this big prime:
2838328825137039141435342621439534528943128838135431433332945938442728943834240131132923440422435340428745539221936843942339045745743431328047440840623840847628343125745638943539646036323141935836144224627527034421721943138543437843833428039947524334031931438636437142931327924831725629124722934522441929229246038336244639533537231633646440243963 read more ..

MathKing Dec 31, 2019

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736

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Halp

Guest Dec 31, 2019

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1973

1

Geometry Question

A large square is divided into 4 small congruent rectangles and a small square as shown. The areas of the large and small squares are 25 and 7, respectively. What is the length of a diagonal of a small rectangle?
read more ..

Guest Dec 31, 2019

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619

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Help please

Guest Dec 31, 2019

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852

2

help

Find angle DAC + angle EBD + angle ACE + angle BDA + angle CEB.

Guest Dec 31, 2019

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624

3

Halp!

Guest Dec 31, 2019

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581

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help

If (a + bi)^2 = b + ai, where i^2 = -1, and a and b are positive, then find (a,b).

Guest Dec 31, 2019

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634

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help

A man lost in the woods decides to flip a coin, walking one mile east each time it appears heads and one mile west each time it appears tails. He flips the coin six times and walks accordingly. Find the probability that he will be at least two read more ..

Guest Dec 31, 2019

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143

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+306

A coin is flipped 10 times, and at least 8 of the flips were heads. How many different sequences of flips could there have been?

A coin is flipped 10 times, and at least 8 of the flips were heads. How many different sequences of flips could there have been?

mathmathj28 Dec 31, 2019

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