All Questions ⁺⁰231320 Questions

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339

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Algebra

The sum of 3 real numbers is known to be zero. If the sum of their cubes is -1, what is their product equal to?

Guest Oct 29, 2021

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172

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help Algebra

Let r, s, and t be the roots of 2x^3 - 7x^2 - 6 = 1. Find rst.

Guest Oct 29, 2021

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170

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Analytic Geometry

Enter the letters of the points that lie on the line y=1/2x- 4

Guest Oct 29, 2021

-9

1055

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+118613

Remeniscing - a little historical humour.

I just found this old post that some of you, who have been around for a while, might find amusing.

https://web2.0calc.com/questions/look-at-the-new-leader-board

off-topic

Melody Oct 29, 2021

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169

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help algebra

There is a unique polynomial P(x) of degree 4 with rational coefficients and leading coefficient 1 which has sqrt(2) + sqrt(15) as a root. What is P(1)?

Guest Oct 29, 2021

Oct 28, 2021

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172

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Geometry question

Two sides of a triangles are 5 and 5, and the inradius is $4/3$. Find the length of the third side.

Guest Oct 28, 2021

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289

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need help

Find the area of the region enclosed by the graph of $x^2 + y^2 = 2x - 6y + 6 - 18x + 2y$

Guest Oct 28, 2021

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174

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Algebra

Find all the values of a for which the equations

x^2 + ax + 1 = 0
x^2 - x - a = 2 read more ..

Guest Oct 28, 2021

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163

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help plz

The fifth term of an arithmetic sequence is 9 and the 32nd term is 84. What is the 23rd term?

Guest Oct 28, 2021

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294

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need help with coordinates

Find the area of the region enclosed by the graph of x^2 + y^2 = 4x - 12y + 8.

Guest Oct 28, 2021

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247

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A particle is moving so that its position at time is given by the parametric equations what is the speed of the particle

A particle is moving so that its position at time is given by the parametric equations what is the speed of the particle

Guest Oct 28, 2021

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209

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geometry

In triangle ABC, the circumcenter and orthocenter are collinear with vertex A. Which of the following statements must be true?
1) Triangle ABC must be an isosceles triangle
2) Triangle ABC must be an equilateral triangle
3) Triangle read more ..

Guest Oct 28, 2021

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188

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Geometry

Right triangle ABC with a right angle at A has AB = 20 and AC = 15. Point D is on AB with BD = 2. Points E and F are placed on ray CA and ray CB, respectively, such that CD is a median of CEF. Find the area of CEF.

Guest Oct 28, 2021

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692

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Algebra

All of the members of our spray-painting team paint at the same speed. If $5$ team members can paint a certain wall in $27$ minutes, then how many minutes would it take $15$ of our team members to paint the same wall?

Guest Oct 28, 2021

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381

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Polynomials

If the roots of p(x) = x^3 - 15x^2 + 74x + c form an arithmetic sequence, find c.

Guest Oct 28, 2021

+1

574

5

+589

Graphing

Question 1 (a,b,c) are related to the graph above, and 2, 3, and 4 are different questions:
1a) Enter the letters of the points that lie on the line y= 1/2x+3 ( I found read more ..

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weredumbmaster22 Oct 28, 2021

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289

1

Algebra

If a and b are nonzero real number such that $|a| \neq |b|$, compute the value of the expression (a + b)(b - a)/(a^2 - b^2).

Guest Oct 28, 2021

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192

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Coordinates

A line with slope 3 intersects a line with slope 5 at the point $(10,16)$. What is the distance between the x-intercepts of these two lines?

Guest Oct 28, 2021

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321

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Geometry

D is on side BC of triangle ABC. We know $ABC \sim ACD$ and angle A = 49 degrees. If BC = CD, what is angle B in degrees?

Guest Oct 28, 2021

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166

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help with math

Find all possible integer values of n such that 2n^2 + 2n + 38 is a 4-digit number with all 4 digits equal.

Guest Oct 28, 2021

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226

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Counting

The product of all digits of positive integer M is 105. How many such Ms are there with four digits?

Guest Oct 28, 2021

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183

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Number Theory

For each positive integer n, let S(n) denote the sum of the digits of n. How many three-digit n's are there such that n == S(n) + S(S(n)) (mod 9)?

Guest Oct 28, 2021

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338

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Please help me

Sharon sold 3/10 of her mangoes and Ahmad sold 1/4 of his.
They found that each of them had sold the same number of mangoes.
If Sharon had 36 fewer mangoes than Ahmad at first, how many mangoes did
Ahmad have left? read more ..

Guest Oct 28, 2021

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306

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help plz

Claire jogs 6 miles per hour and Megan jogs 5 miles per hour. They start together at their campsite and jog to an outpost 16 miles away. When Claire gets there, she immediately turns around and heads back towards Megan. How many miles will they be from read more ..

Guest Oct 28, 2021

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