All Questions ⁺⁰235546 Questions

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183

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Book Moving- Physics

A book is moving along a floor. Final State- the book is at rest on the floor. The system includes the book and the floor. Friction brings the book to a stop. What is the LOL chart for this?

Guest Feb 16, 2022

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298

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Algebra

Richard needs to fly from San Diego to Halifax, Nova Scotia and back in order to give an important talk about mathematics. On the way to Halifax, he will get a speed boost from the wind which blows at miles per hour (mph). On the way back, the read more ..

Guest Feb 16, 2022

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278

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Algebra

Simplify and rationalize the denominator: 1/(1 + 1/(sqrt(3) + 2)).

Guest Feb 16, 2022

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171

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Equations

Let a, b, c be nonzero constants. Solve the system

ay + bx = c,
az + cx = b, read more ..

Guest Feb 16, 2022

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316

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geometry

In ΔVWX, w = 55 inches, x = 26 inches and ∠V=103°. Find the length of v, to the nearest inch.

Guest Feb 16, 2022

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295

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help algebra

If the roots of the quadratic equation 1/2*x^2 + 99x + c = 0 are x = -99 + sqrt(8021) and x = -99 - sqrt(8021), then what is the value of c?

Guest Feb 16, 2022

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262

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help

help

You can place particular numbers within the parentheses of function notation.
A. True read more ..

Guest Feb 16, 2022

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291

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help binomial

What is the sum of all possible values of for which x^2 + kx - 10x + 36 + 12x - 8 is the square of a binomial?

Guest Feb 16, 2022

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282

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Function

Given f(x) = sqrt(x - 1)/(x + 12), what is the smallest possible integer value for x such that f(x) has a real number value?

Guest Feb 16, 2022

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291

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Number Theory

In how many different ways can 2/15 be represented as 1/a + 1/b + 1/c, if a and b and c are positive integers with a >= b >= c.

Guest Feb 16, 2022

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295

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Range

The range of the function g(x) = 2/(2 + 4x^2 + 2x^2) can be written as an interval (a,b]. What is a+b?

Guest Feb 16, 2022

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306

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Pls help

A bookshop was selling textbooks and workbooks. A textbook cost 3/5 more than a workbook. 35% of the books sold were textbooks. If the price of a workbook was $6, and $108 more was collected from the sales of workbooks than textbooks, how many books were read more ..

Guest Feb 16, 2022

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169

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Algebra

If if a and b are roots of equation x^2 - 2x + 2*sqrt(3) = 0 and x^4 + px^2 + q = 0, what is p?

Guest Feb 16, 2022

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312

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+1124

Triangles

Hi friends,

Last one for the day please....
read more ..

juriemagic Feb 16, 2022

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270

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Tangents

Circle O is tangent to AB at A, and angle ABD = 90 degrees. If AB = 12 and CD = , find the radius of the circle.

read more ..

Guest Feb 16, 2022

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273

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Geometry

Let A, B, C be points on circle O such that AB is a diameter, and CO is perpendicular to AB. Let P be a point on OA, and let line CP intersect the circle again at Q. If OP = 20 and PQ = , find r^2, where r is the radius of the circle. read more ..

Guest Feb 16, 2022

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291

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Parabolas

The parabola y = x^2 is tangent to a circle at (2,4). The circle passes through the point (0,7). Find the center of the circle.

Guest Feb 16, 2022

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321

1

Multiply (x2 + 2x + 3)(4x2 – 2x + 1).

Multiply (x2 + 2x + 3)(4x2 – 2x + 1).

Guest Feb 16, 2022

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335

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Complex Numbers

Find all complex numbers z such that z^2 = 2i + 2.
Write your solutions in form, separated by commas. So, "1+2i, 3-i" is an acceptable answer format, but "2i+1; -i+3" is not. (Don't include quotes in your answer.)

Guest Feb 16, 2022

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273

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Function

The function f(\sqrt{x + 1}) = \frac{1}{x + 1} satisfies
for all $x \ge -1,$ Find f(2).

Guest Feb 16, 2022

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279

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Quadratic

If f(0)=0, f(1)=2, f(2)= and f(x)=ax^2+bx+c, what is the value of f(3)?

ElectricPavlov ●

Guest Feb 16, 2022

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297

4

Counting problem

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

Guest Feb 16, 2022

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406

13

+1124

fraction sequence

Hi friends!,
it's been a looooong time...

Please help me with the following: read more ..

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juriemagic Feb 16, 2022

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