All Questions

273

+24

Trig question

I have a couple of questions but idk how to put asymptote code into an image here so ill sub mit the questions one at a time

Find BC in the diagram below
read more ..

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figlavaplanet Jun 22, 2022

301

Algebra

If 1/x + 1/y = 3 and 1/x - 1/y = 7, what is the value of x + y? Express your answer as a common fraction.

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Guest Jun 22, 2022

302

implicit differentiation

Hello,
I need to find the second derivative of 2x^2 - 3y^2 = 4 using implicit differentiation.
I got 2x/3y as my first derivative but am confused on how to solve for the second derivative using implicit differentiation.

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Guest Jun 22, 2022

285

system

Find the value of a so that the system has no solutions.

y = 11x + 14
2y - 4 = ax + 3y read more ..

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Guest Jun 22, 2022

294

sequence problem

The sum of the first n terms of a certain sequence is n(n + 1)(n - 2). Find the tenth term of the sequence.

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Guest Jun 22, 2022

324

pls help!

Given the following list of numbers: $\frac{3}{5}, \frac{5}{6}, \frac{2}{3}, \frac{9}{8}, \frac{7}{9}, \frac{3}{4}$ what is the smallest number subtracted from the biggest number? Express your answer as a decimal.

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Guest Jun 22, 2022

223

help pls, ty

prove that 2a^2+3b^2+6c^2 ≥ (a+b+c)^2

i tried using cauchy schwarz but i got sort of stuck with coming up with the LHS, can someone please help, thank you

Guest Jun 22, 2022

321

Quadratic

For specific positive numbers m and n, the quadratics 16x^2 + 44x + 56 + 4x^2 - 14x - 30 and (mx + n)^2 differ only in their constant term. What is mn?

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Guest Jun 22, 2022

296

Probability question

Cosmin has three ping pong balls, and ten cups in front of him. If he throws the ping pong balls into the cups, what is the probability that exactly two balls land in the same cup? (A ping pong ball has an equal probability of landing in any cup.) read more ..

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Guest Jun 22, 2022

305

Binomial

What non-zero integer must be placed in the square so that the simplified product of these two binomials is a binomial: $(3x+1)(12x-\Box )$?

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Guest Jun 22, 2022

289

Sequence

The first term of a sequence is 13. Starting with the second term, each term is the sum of the cubes of the digits in the previous term. For example, the second term is 1^3 + 3^3 = 28. Find the 5th term.

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Guest Jun 22, 2022

286

Function

Let
f(x) = -x + 3 if x >= 1
f(x) = 2x + 1 if x < 1
Find the sum of all values of x such that f(x) = 0 read more ..

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Guest Jun 22, 2022

257

A city's soccer coaches conducted a survey of 50 city soccer players. These players were chosen at random from the city's soccer teams' rost

A city's soccer coaches conducted a survey of 50 city soccer players. These players were chosen at random from the city's soccer teams' rosters. Participants were asked the question, "Do you prefer to drink water or a sports drink after playing in a soccer read more ..

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Guest Jun 22, 2022

303

counting problem

Dogs in the GoodDog Obedience School win a blue ribbon for learning how to sit, a green ribbon for learning how to roll over, and a white ribbon for learning how to stay. There are dogs in the school.
62 have blue ribbons, 55 have green read more ..

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Guest Jun 22, 2022

297

Probability

The faces of two regular dodecahedra are labeled with the numbers 1 to 12 in order to make dice. If these dice are rolled, what is the probability that the sum of the two top numbers is greater than 16?

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Guest Jun 22, 2022

278

need help

A box contains 4 white balls and 5 red balls. I draw 3 of them out of the box, one at a time, and set them aside. What is the probability that all three balls have the same color?

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Guest Jun 22, 2022

259

quadratic

There are two distinct solutions x to the equation 18 + 5x^2 = 30x. If each solution is rounded to the nearest integer, and then these two integers are multiplied together, what is the result?

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Guest Jun 22, 2022

294

help geometry

In triangle ABC, CA = 4sqrt2, CB = 4sqrt3, and angle A = 45 degrees. What is B in degrees?

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Guest Jun 22, 2022

266

Algebra

The line $x = k$ intersects the graph of the parabola $x = -2y^2 - 3y + 5$ at exactly one point. What is $k$?

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Guest Jun 22, 2022

284

system

If the system of equations
3x + y = a
2x + 5y = 2a
has a solution (x,y) when x = -2, compute a read more ..

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Guest Jun 22, 2022

322

+166

Algebra - Floor Functions

Let for .
(a) Find all such that
(b) Find all such that
(c) Find all such that
(d) Find the number of possible values of for

I've solved read more ..

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RainbowSquirrel53 Jun 22, 2022

305

Algebra

The integers G and H are chosen such that
\[\frac{G}{x+5}+\frac{H}{x^2-4x}=\frac{x^2-3x+5}{x^3+x^2-20x}\]
for all real values of $x$ except -5, 0, and 4. Find $H/G$.

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Guest Jun 22, 2022

Jun 21, 2022

298

Domain

What is the domain of the function
f(x) = (2x - 3)(2x + 5)/((x - 9)(x + 9))
Express your answer as an interval or as a union of intervals.

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Guest Jun 21, 2022

222

help algebra

The polynomials x^3-ax^2-2x-1 and x^3-3x^2+2 have a common root. Find all possible values of a.

Guest Jun 21, 2022

327

math

In triangle ABC, medians AD and CE intersect at P , PE=1.5, PD=2 and .DE= 2.5 What is the area of AEDC?

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Guest Jun 21, 2022

All Questions ⁺⁰237783 Questions

Trig question

Algebra

implicit differentiation

system

sequence problem

pls help!

help pls, ty

Quadratic

Probability question

Binomial

Sequence

Function

A city's soccer coaches conducted a survey of 50 city soccer players. These players were chosen at random from the city's soccer teams' rost

counting problem

Probability

need help

quadratic

help geometry

Algebra

system

Algebra - Floor Functions

Algebra

Domain

help algebra

math

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