All Questions ⁺⁰237779 Questions

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246

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Algebra

In a zoo the ratio of giraffes to apes is 6 to 5 and the ratio of apes to zebras is to 1. What is the minimum number of zebras the zoo could have?

Guest May 29, 2022

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309

1

Number Theory

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

Guest May 29, 2022

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225

0

Number Theory

How many different positive values of x will make this statement true: there are exactly positive two-digit multiples of x.

Guest May 29, 2022

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208

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Number Theory

What is the smallest positive integer that can be written in the form ,2002m + n where m and n are integers?

Guest May 29, 2022

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296

1

Help Please!!!

On a rainy day, every kid at Margo's school brings a raincoat, an umbrella, or both. $8\%$ of the kids bring both. The total number of umbrellas brought is twice the total number of raincoats. What percent of the kids bring only an umbrella?

Guest May 29, 2022

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211

0

Modulus!

how do you calculate the modulus of the answer of 3 congruence equations if 2 pairs of 2 modulus' of the equations are not relatively prime to eachother?

Guest May 29, 2022

-1

315

0

+614

sequences and series

what value does sequence an=65x/e1/4xconverge to?

please provide an explanation

xxJenny1213xx May 29, 2022

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221

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Algebra

If we express 3x^2 - 6x - 2 + x^2 - 2x in the form a(x - h)^2 + k, then what is a + h + k?

Guest May 29, 2022

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2

367

1

system

x(y + z) = 39
y(x + z) = 60
z(x + y) =
What is x? read more ..

Guest May 29, 2022

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270

1

Number Theory

How many four-digit numbers N = abcd satisfy all of the following conditions?
1. 4000 <= N < 6000
2. N is a multiple of 5.
3. N is a multiple of 11. read more ..

Guest May 29, 2022

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289

0

y = ((time - 50) ÷ 5) ^ 2

y = ((time - 50) ÷ 5) ^ 2

Guest May 29, 2022

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281

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+37

Prime factors of semiprimes and squares

What are the semiprimes and square numbers that have strictly factors between 30 & 40 whose numbers are between 10000 & 20000?

GP72022a May 29, 2022

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225

0

Algebra

Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 - y^2 = 56.

Guest May 29, 2022

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215

0

Algebra question

Find all values of x such that 2x/(x - 2) = -6/(x + 4).
If you find more than one value, then list your solutions, separated by commas.

Guest May 29, 2022

May 28, 2022

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329

1

Clock angles

Find all integers n such that when the clock strikes n o'clock, the acute angle between the hour and minute hands is 90 degrees. Enter your answer as a comma-separated list.

Guest May 28, 2022

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333

1

Domain

There are three real numbers that are not in the domain of
f(x) = (x - 1)(x - 2)(x - 3)/(x(x - 1)(x - 2))
What is the sum of those three numbers?

Guest May 28, 2022

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343

1

trig question

In triangle BCD, angle C = 90 degrees, CD = 3, and BD = sqrt(14) . What is tan B?

Guest May 28, 2022

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339

3

please please help me

32(cos(7pi/4)+i sin(7pi/4))
4root2(cos(5pi/6)+i sin(5pi/6))

Guest May 28, 2022

0

2

390

2

geometry question, please tell me what I am doing wrong

Two 3x4 rectangles overlap, as shown below. Find the area of the overlapping region. (Which is shaded)

What I've done so read more ..

Guest May 28, 2022

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331

1

What is the product of 3√6cis(π/8) and 2√5cis(7π/6)

I'm really struggling with this, please help.

Guest May 28, 2022

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220

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Coordinates

The vertices of a triangle are the points of intersection of the line y = -x-5, the line x=2, and y = -1/5x+13/5. Find an equation of the circle passing through all three vertices.

Guest May 28, 2022

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316

1

Counting

In how many ways can I choose 4 different officers (President, Vice President, Treasurer, and Secretary) from a club of 8 people?

Guest May 28, 2022

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323

1

Number Theory

How many zeros are at the end of (100!)(200!)(300!)(400!) when multiplied out?

Guest May 28, 2022

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322

1

Function

The function f : R -> R satisfies
f(x)f(y) = f(x + y) + f(xy)
for all real numbers x and y. Find all possible functions f.

Guest May 28, 2022

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194

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math problem

Four positive integers A, B, C, and D have a sum of 36. If A + 2 = B - 2 = C + 2 = D - 2, what is the value of the product ABCD?

Guest May 28, 2022

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