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274

i need help

Find the radius of the circle with equation 9x^2 - 18x + 9y^2 + 36y + 44 = 8x^2 - y^2 + 2x - 6y,

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Guest Oct 28, 2022

289

Help me please. I don't understand??

Please help me

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Guest Oct 28, 2022

287

The speed of 10 Ferris wheels is sampled. The speed, measured in miles per hour, are

The speed of 10 Ferris wheels is sampled. The speed, measured in miles per hour, are
10, 10, 12, 14, 10, 9, 8, 14, 12, 15
What is the best estimate of the population mean for the speed of a Ferris wheel?
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Guest Oct 28, 2022

275

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What is the x-coordinate for the x-intercept of the line containing the points (7,4) and (6,3)?

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Guest Oct 28, 2022

249

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A spinner is divided into four equal sections that are numbered 2, 3, 5, and 6. The spinner is spun twice.
How many outcomes have a product less than 14 and contain at least one odd number?

Responses read more ..

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Guest Oct 28, 2022

273

Algebra

$x = 1 + \cfrac{\sqrt{3}}{1 + \cfrac{\sqrt{3}}{1 + \dotsb}}$. Find $\frac{1}{(x + 2)(x - 1)}$. When your answer is in the form $\frac{A + \sqrt{B}}{C}$, where $A$, $B$, and $C$ are integers, and $B$ is not divisible by the square of a prime,

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Guest Oct 28, 2022

283

proportion

If j and k are inversely proportional and j = 42 when k = 56 , what is the value of j when k = 98?

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Guest Oct 28, 2022

Oct 27, 2022

281

Algebra

The function f(x) = ax^r satisfies f(2) = 1 and f(128) = 5. Find r.

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Guest Oct 27, 2022

269

number theory

In the equation 1/j + 1/k = 1/3 + 1/4 , both j and k are positive integers. What is the sum of all possible values for k?

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Guest Oct 27, 2022

273

help counting

I have 10 distinguishable socks in my drawer: 4 white, 4 brown, and 2 blue. In how many ways can I choose a pair of socks, provided that at least of them is white?

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Guest Oct 27, 2022

321

+349

integral question

$\int_{0}^{\infty} x^{3} e^{-x^4} dx$

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hipie Oct 27, 2022

273

geometry

In a certain Pentagon, the interior angles are a˚, b˚, c˚, d˚, and e˚ where a, b, c, d, and e are integers strictly less than 180. ("Strictly less than 180" means they are "less than and not equal to" 180.)

If read more ..

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Guest Oct 27, 2022

309

help me or else

The cost to purchase a song from iTunes is $0.99 per song. To purchase a song from Napster, you must be a member. The Napster membership fee is $10. In addition, each purchased song costs $0.89. How many downloaded songs, d, must be purchased for the monthly read more ..

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Guest Oct 27, 2022

261

polynomial

When the polynomial p(x) is divided by x - 1, the remainder is 3. When the polynomial p(x) is divided by x - 3, the remainder is 8. What is the remainder when the polynomial p(x) is divided by (x - 1)(x - 3)?

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Guest Oct 27, 2022

271

Number Theory

Given that $33^{-1} \equiv 77$ (mod $508$), find $19^{-1}$ (mod $508$) as a residue modulo 508. (Give an answer between 0 and 507, inclusive.)

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Guest Oct 27, 2022

265

geometry

In the diagram, point E lies on line segment AB, and triangles AED and BEC are isosceles. Also, angle DEC is twice ADE. What is the measure of EBC in degrees?

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Guest Oct 27, 2022

258

help please help help help

Let f(x) = x^3 + 3x ^2 + 4x - 7 and g(x) = -7x^4 + 5x^3 +x^2 - 7. What is the coefficient of x^3 in the sum f(x) + g(x)?

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Guest Oct 27, 2022

226

help!!!!!

i forgor

Guest Oct 27, 2022

272

geometry

Points M, N, and O are the midpoints of sides KL, LJ, and JK respectively of triangle JKL. Points P, Q, and R are the midpoints of segments NO, OM, and MN respectively. If they are of triangle PQR is 27, then what is the area of triangle LNQ? read more ..

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Guest Oct 27, 2022

236

help algebra

Alice and Bob each have a certain amount of money. If Alice receives n dollars from Bob, then she will have 8 times as much money as Bob. If, on the other hand, she gives n dollars to Bob, then she will have 2 times as much money as Bob. If neither gives read more ..

Guest Oct 27, 2022

217

Algebra

If I give my brother 5 dollars, then we will have the same amount of money. If instead, he gives me 14 dollars, then I'll have three times as much money as he will have. How much money does my brother currently have (in dollars)?

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Guest Oct 27, 2022

266

triangles

Let ABC be a triangle, and let its angle bisectors be AD, BE, and CF, which intersect at I. If DI = 3, BD = 4, and BI = 8, then find the area of triangle ABC.

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Guest Oct 27, 2022

335

+22

Please help me, I'm having a hard time understanding this question and doing it.

cosθ=−√2/6 , where π≤θ≤3π/2 .
tanβ=5/12 , where 0≤β≤π/2 .
What is the exact value of sin(θ+β)?
Enter your answer, as a single fraction in simplified form, in the box. read more ..

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Sarcasticcarma Oct 27, 2022

238

counting

In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color and there must be at least 2 red squares. How many ways are there to color the five squares?

Guest Oct 27, 2022

All Questions ⁺⁰238458 Questions

i need help

Help me please. I don't understand??

The speed of 10 Ferris wheels is sampled. The speed, measured in miles per hour, are

Help Help Help Help

666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666

Algebra

proportion

Algebra

number theory

help counting

integral question

geometry

help me or else

polynomial

Number Theory

geometry

help please help help help

help!!!!!

geometry

help algebra

Algebra

triangles

Please help me, I'm having a hard time understanding this question and doing it.

counting

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