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649

probability q

To take quizzes, each of 30 students in a class is paired with another student. If the pairing is done randomly, what is the probability that Margo is paired with her best friend, Irma, and that George is paired with his best friend Fred? Express your answer read more ..

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Guest Dec 15, 2020

385

number theory

Find the largest integer n for which 12^n evenly divides 50!.

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Guest Dec 15, 2020

431

cphill please help me :DDDD

A function $f$ has a horizontal asymptote of $y = -4,$ a vertical asymptote of $x = 3,$ and an $x$-intercept at $(1,0).$ Part (a): Let $f$ be of the form $$f(x) = \frac{ax+b}{x+c}.$$Find an expression for $f(x).$ Part (b): Let $f$ be of the form $$f(x) read more ..

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Guest Dec 15, 2020

429

kaske

Find the mean and the standard deviation for the following data set: 5, 2, 2, 5, 3, 2, 3, 4, 4, 1, 2, 3, 3, 6, 3, 1 a Mean = 2.06 and s = 0.93 b Mean = 3.44 and s = 1.55 c Mean = 2.31 and s = 1.01 d Mean = 3.06 and s = 1.44

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Guest Dec 15, 2020

381

Help!

If , $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.

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Guest Dec 15, 2020

681

Help! Not sure!

Find the sum of the squares of the solutions of $x^2-13x+4=0$.

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Guest Dec 15, 2020

577

probability

The digits from 1 to 6 are arranged to form a six-digit multiple of 5. What is the probability that the number is greater than 300,000? Express your answer as a common fraction.

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Guest Dec 15, 2020

420

probability question

A target consists of four concentric circles with radii 4 inches, 6 inches, 9 inches and 13 inches as shown. Given that a dart is thrown that hits the target at a random point, what is the probability that it hits a shaded region? Express your answer as read more ..

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Guest Dec 15, 2020

469

Joe wants to find all the four-letter words

Joe wants to find all the four-letter words that begin and end with different letters. How many combinations of letters satisfy this property?

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Guest Dec 15, 2020

756

+466

For some constants $a$ and $b,$ let The function $f$ has the property that $f(f(x)) = x$ for all $x.$ What is $a + b?$

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dududsu2 Dec 15, 2020

1180

Help!

A player can move from point to point only in a direction that includes a downward motion (slanted or not). In how many distinct ways can a player move from the top to bottom? read more ..

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Guest Dec 15, 2020

406

Sums

Find \[\sum_{n = 1}^\infty \frac{n^2 + n - 1}{(n + 2)!}.\]

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Guest Dec 15, 2020

372

help with probability

If six people decide to come to a basketball game, but three of them are only 2/5 sure that they will stay for the entire time (the other three are sure they'll stay the whole time), what is the probability that at the end, all six people stayed the entire read more ..

Guest Dec 15, 2020

716

+296

What is the cosine equation of the function shown?

Fill in the blanks
f(x)=___cos (x__)__

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lovesosa12 Dec 15, 2020

512

probability

Chris wants to put six plants in a row on his windowsill. He randomly chooses each plant to be an aloe plant, a basil plant, or a violet. What is the probability that either exactly four of the plants are aloe plants or exactly four of the plants are basil read more ..

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Guest Dec 15, 2020

529

+296

Please use the given word problem to answer the following questions.

How far is Corey from the tree in the initial position?
read more ..

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lovesosa12 Dec 15, 2020

327

is there a sum of button

Guest Dec 15, 2020

432

+296

Please Answer the following questions based on this right triangle

The hypotenuse of a right triangle measures2√22centimeters and its shorter leg measures 2√6centimeters. Answer the following questions based on this right triangle:

What is the measure of the 3rdside?
read more ..

lovesosa12 Dec 15, 2020

595

expected value

A fair 6-sided die is rolled. If I roll n then I win 1/n dollars. What is the expected value of my win? Express your answer as a dollar value rounded to the nearest cent.

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Guest Dec 15, 2020

636

Please help

Please help with this question, im stuck on it

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Guest Dec 15, 2020

541

I dont understand

I dont get this at alll

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Guest Dec 15, 2020

407

quadratic

It is known that x_{1} and x_{2} are roots of the equation x^{2}-8x + k = 0, where 3x_{1}+4x_{2}=35. Find k.

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Guest Dec 15, 2020

446

+296

Help please

Are the trigonometric functions odd, even, or neither odd nor even?
Choose one of the options provided to complete the sentences.

The function f(x)=tan x is _____. The function f(x)=sec x is ____. read more ..

lovesosa12 Dec 15, 2020

481

What are the period and amplitude of the function?

What are the period and amplitude of the function?

read more ..

Guest Dec 15, 2020

624

+30

pls help! due tmrw night!

1. A rectangular prism has a total surface area of 48. Also, the sum of all the edges of the prism is 40. Find the length of the diagonal joining one corner of the prism to the opposite corner.

2. Let ABCDEFG be a rectangular read more ..

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akacindy Dec 15, 2020

All Questions ⁺⁰237641 Questions

probability q

number theory

cphill please help me :DDDD

kaske

Help!

Help! Not sure!

probability

probability question

Joe wants to find all the four-letter words

For some constants $a$ and $b,$ let The function $f$ has the property that $f(f(x)) = x$ for all $x.$ What is $a + b?$

Help!

Sums

help with probability

What is the cosine equation of the function shown?

probability

Please use the given word problem to answer the following questions.

is there a sum of button

Please Answer the following questions based on this right triangle

expected value

Please help

I dont understand

quadratic

Help please

What are the period and amplitude of the function?

pls help! due tmrw night!

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