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329

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slope

Juwan and his friend Jamie are watching their favorite tech penny stocks in the stock market. The initial value of Jamie’s stock was $4.00, while Juwan’s stock’s initial value was $0.00. Because of some incredible turns in the market this morning, the stocks read more ..

Guest Jan 6, 2022

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391

1

Functions

For all complex numbers z,
let f(z) = z^2 if z is not real, f(z) = 2z if z is real.

Find f(f(f(f(1+i)))). read more ..

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Guest Jan 6, 2022

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510

1

What is the frequency of a photon of light that has an energy of 2.95 × 10−17 J?

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Guest Jan 6, 2022

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314

1

Counting

How many distinguishable ways are there to write 9 as the sum of 1's, 3's and 4's, where the order of the addends matters? For example, 1 + 3 + 4 + 1 and 4 + 1 + 3 + 1 are two different ways.

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Guest Jan 6, 2022

0

399

1

Counting

A Senate committee has 5 Democrats and 5 Republicans. In how many distinguishable ways can they sit around a circular table if all 5 Republicans want to sit next to each other?

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Guest Jan 6, 2022

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248

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Counting

In how many ways can 4 distinct beads be placed on a bracelet? (Two ways are considered the same if one is a reflection of the other, since we can flip the bracelet over.)

Guest Jan 6, 2022

0

425

1

Thanks

The diameter of our solar system (depending on how you define “solar system”) is about
8,980,000,000,000 kilometers.
The distance from our solar system to the nearest star, Proxima Centauri, is about
39,900,000,000,000,000 kilometers.
A light-year read more ..

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Guest Jan 6, 2022

0

289

0

Coordinates

The points (1,7), (13,18) and (16,k), where k is an integer, are vertices of a non-degenerate triangle. What is the sum of the values of k for which the area of the triangle is a minimum?

Guest Jan 6, 2022

0

373

1

Please help

Suppose ten distinct, positive integers have a median of 10. ("Distinct integers" means that no two integers are the same.)

What is the smallest the average of those ten integers could be?

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Guest Jan 6, 2022

0

491

3

Challenging geometry problems

In triangle PQR, PQ=8, PR=lO and QR=9. PD bisects angle QPR, QA
is perpendicular to PD, and BC passes through A such that BC is
parallel to PR. Prove that AC is a median of triangle PAQ. Find DB.

In right triangle ABC, read more ..

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Guest Jan 6, 2022

0

417

1

Help would be appreciated please

Juwan and his friend Jamie are watching their favorite tech penny stocks in the stock market. The initial value of Jamie’s stock was $4.00, while Juwan’s stock’s initial value was $0.00. Because of some incredible turns in the market this morning, the stocks read more ..

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Guest Jan 6, 2022

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384

1

Number Theory

Find all positive integers n such that n^2 is divisible by n - 12.

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Guest Jan 5, 2022

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390

2

Percent

According to the statistics, the Megalopolis lacrosse team scores 25% of their goals in the first half of play and the rest during the second half. Thus, it seems that the coach's opinion that they are a "second half team" is correct. If they scored 13 read more ..

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Guest Jan 5, 2022

0

417

2

Geometry

Find angle x, in degrees.

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Guest Jan 5, 2022

0

275

1

What is the cubic yard of 27,000sq ft?

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Guest Jan 5, 2022

0

292

0

help counting

In how many ways can I arrange 3 different math books and 6 different history books on my bookshelf, if I require there to be a math book on both ends?

Guest Jan 5, 2022

0

285

0

Probability

A five-digit number is chosen at random from all possible five-digit numbers. Find the probability that the number is NOT divisible by every element of ( 1,2,3,4,5 )

Guest Jan 5, 2022

0

280

0

Help

The smallest square shown is inscribed in square ABCD which is inscribed in square EFGH which is inscribed in the largest square MNOP. If the area of the smallest square has the minimum possible value, what is the ratio of the area of the smallest square read more ..

Guest Jan 5, 2022

0

352

2

Algebra

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 38 miles per hour instead, then I would have arrived 10 minutes later. How many miles did I drive?

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Guest Jan 5, 2022

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325

1

Geometry

Triangle AHI is equilateral. We know BC, DE, and FG are all parallel to HI and AB = BD = DF = FH. What is the ratio of the area of the trapezoid FGIH to the area of triangle AFG? Express your answer as a common fraction.

read more ..

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Guest Jan 5, 2022

0

358

2

Math

Emily just finished painting the smallest wall in her room. It took her 1 hour and 40 minutes and she was able to paint at a rate of forty-two square feet per hour. If the wall is thirteen feet long, how tall is it? Round your answer to the nearest foot. read more ..

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Guest Jan 5, 2022

0

353

1

Number Theory

Find the sum of the primes between 100 and 200, inclusive, that are 1 or 2 or 3 more than a perfect square.

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Guest Jan 5, 2022

0

344

1

Algebra

The quadratic equation ax^2 + 8x + c = 0 has exactly one solution. If a + c = 12, and a < c, find the ordered pair (a, c).

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Guest Jan 5, 2022

0

374

1

plz help

What is the largest three-digit integer whose digits are distinct and form a geometric sequence with common ratio 2?

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Guest Jan 5, 2022

All Questions ⁺⁰237687 Questions

slope

Functions

What is the frequency of a photon of light that has an energy of 2.95 × 10−17 J?

Counting

Counting

Counting

Thanks

Coordinates

Please help

Challenging geometry problems

Help would be appreciated please

Number Theory

Percent

Geometry

What is the cubic yard of 27,000sq ft?

help counting

Probability

Help

Algebra

Geometry

Math

Number Theory

Algebra

plz help

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