All Questions

282

need help with this

What is the sum of the roots of the equation 4x^3 + 5x^2 - 8x = 3x^3 - x^2 + 12x? Express your answer as a decimal to the nearest hundredth.

●

Guest Jul 23, 2022

252

HALP!!

Find $\frac{1}{a-1}+\frac{1}{b-1},$ where $a$ and $b$ are the roots of the quadratic equation $2x^2-7x+2 = 0.$

●

Guest Jul 23, 2022

297

help @Voldemort can you do a walkthrough on this one

Find the product of all real values of r for which 1/(2x) = (r - x)/5 has exactly one real solution.

●●

Guest Jul 23, 2022

312

plz help Voldemort

A square is drawn such that one of its sides coincides with the line y = 7, and so that the endpoints of this side lie on the parabola y = 2x^2 + 6x + 4. What is the area of the square?

●●

Guest Jul 23, 2022

261

Voldemort need help

What number is 55% of the way from 736 to 976?

●

Guest Jul 23, 2022

320

One more question @Voldemort! Please do a full walkthrough; thank you!

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

●●●

Guest Jul 23, 2022

285

Probability

A bag contains three red marbles and eight blue marbles. Your randomly pick a marbles and then pick a second marble without returning the marbles to the bag. What is the probability that the first marble is red and the second marble is red? read more ..

●

Guest Jul 23, 2022

249

Please help with walkthrough!

Let $a$ and $b$ be the solutions of the equation $2x^2-10x+5=0$. What is the value of $(2a-3)(4b-6)$?

●

Guest Jul 23, 2022

298

Function

Given that f(x) = x^{-1} + x/(1 + x^{-1}), f(f(-2))? Express your answer as a common fraction.

●●

Guest Jul 23, 2022

280

Help

Jonatan and Trudu had an equal number of coins. After Jonatan gave away 30 coins and Trudu gave away 49 coins, Jonatan had 2 times as many coins as Trudu. How many coins did each have at first?

●●

Guest Jul 23, 2022

292

algebra problem

Wally Woodchuck can chuck 3 cords of wood every 2 hours. Wanda Woodchuck can chuck 2 cords of wood every 3 hours. To the nearest whole cord, what is the greatest amount of wood that Wally and Wanda Woodchuck can chuck in a 24-hour period?

●

Guest Jul 23, 2022

274

help with math problem

Jae-ho’s special coin has the number 5 on one side and 6 on the other side. Jae-ho flips the coin an unlimited number of times, and his score is determined by summing the numbers which appear on top. What is the greatest integer number of points read more ..

●●

Guest Jul 23, 2022

295

complex numbers

If re^{i theta} is a root of z^8 + z^7 + z^6 + z^5 + z^4 + z^3 + z^2 + z + 1 = 0, where r > 0 and 0 <= theta < 2pi, then find the sum of all possible values of theta.

●●●

Guest Jul 23, 2022

264

number theory

If the number 216738A8 is divisible by 13, what digit does A represent?

●●

Guest Jul 23, 2022

293

Positive integers

If a and b are positive integers such that (6a - 2b)^2 + (3a + 2b)^2 = 90, what is the value of ab?

●

Guest Jul 23, 2022

271

triangles

Find the area of triangle JKL below.

●

Guest Jul 23, 2022

287

Rate problem

Jenny is running a 10-km race that starts at 9:00 a.m. Linus is running a 6-km race that starts 20 minutes later at 9:20 a.m. If Linus takes 30 minutes to finish his race, what must Jenny’s average running speed be, in kilometers per hour, to finish her read more ..

●

Guest Jul 23, 2022

287

help plz

If 10^{2n} < 25,000,000 < 10^{2n + 1}, what is the integer value of n?

●

Guest Jul 23, 2022

304

trig

In triangle VWX shown, VX = sqrt13 and VW = 3. What is cos X?

●

Guest Jul 23, 2022

288

Help ASAP

Which of the following numbers is the smallest? Your answer is the letter in front of the smallest number. A. 14.45001 rounded to the nearest tenth. B. 14.54999 rounded to the nearest tenth. C. 14.44999 rounded to the nearest read more ..

●

Guest Jul 23, 2022

315

Please help! And please do a walkthrough!

What is the sum of the reciprocals of the roots of the equation $ \frac{2003}{2004}x + 1 + \frac{1}{x} = 0? $

●

Guest Jul 23, 2022

281

Please show a walkthrough!

The equation $y = -16t^2 + 80t$ describes the height (in feet) of a projectile launched from the ground at 80 feet per second. At what $t$ will the projectile reach 36 feet in height for the first time? Express your answer as a decimal rounded to the nearest read more ..

●

Guest Jul 23, 2022

258

HELP Intervals

Find the set of all z such that neither 2+z nor 2-z is in the interval (-1, 1]. Express your answer as an interval or as a union of intervals.

●●

Guest Jul 23, 2022

309

Graphing quadratics

The graph of the line y = 3x + a intersects the graph of the parabola y = x^2 + x in two points. If the distance between these points is sqrt(30), what is the value of a? Express your answer as a common fraction.

●

Guest Jul 23, 2022

284

quadratic

Find the quadratic whose roots are 7 and 4.

x^2 + __x + __

●

Guest Jul 23, 2022

All Questions ⁺⁰237785 Questions

need help with this

HALP!!

help @Voldemort can you do a walkthrough on this one

plz help Voldemort

Voldemort need help

One more question @Voldemort! Please do a full walkthrough; thank you!

Probability

Please help with walkthrough!

Function

Help

algebra problem

help with math problem

complex numbers

number theory

Positive integers

triangles

Rate problem

help plz

trig

Help ASAP

Please help! And please do a walkthrough!

Please show a walkthrough!

HELP Intervals

Graphing quadratics

quadratic

3 Online Users

Top Users

Sticky Topics