All Questions +0 231246 Questions

Find the smallest value of x such that x^2 + 10x + 25 = 4.

Guest Dec 28, 2021

317

Algebra

Let be defined by
\[f(x) = \left\{
\begin{array}{cl}
2-x & \text{ if } x \leq 1, \\
2x-x^2 & \text{ if } x>1.
\end{array} <#> \right.\]\
Calculate .

Guest Dec 28, 2021

295

Um I dont understand, a solution would help

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Guest Dec 28, 2021

286

Math problem

A woman labels the squares of a very large chessboard 1 through 64. On each square k, the woman puts 2^k grains of rice. How many more grains of rice are placed on the 10th square than on the first 9 squares combined?

Find all complex numbers z such that |z - 3| = |z + i| = |z - 1 - 2i|.

Guest Dec 28, 2021

213

Complex Numbers

Let

find the function such that is its own inverse function.

Guest Dec 28, 2021

219

Need Help

An Ariline currently charges 200 dollars per ticket and sells 40,000 tickets a week. For every 10 dollars they increase the ticket price, they sell 400 fewer tickets a week. How many dollars should they charge to maximize their total read more ..

Guest Dec 28, 2021

215

quadratic

What is the value of k if point P(k, k sqrt(3)) is 4 units from the line 5x+8y=17?

Guest Dec 28, 2021

288

Coordinates

There is a sequence of numbers such that every entry except for the first entry is the arithmetic mean of its two neighboring entries. The 27th entry is 94 and the 94th entry is 39. What's the first entry?

Guest Dec 28, 2021

Dec 27, 2021

292

Sequences

Suppose that we choose diameters in a sphere. Each diameter intersects the sphere's surface at points, defining two hemispheres (one centered at each point.)
Now, a research paper I found (linked here: https://www.mathpages.com/home/kmath327/kmath327.htm) read more ..

Guest Dec 27, 2021

320

+72

Subsets of a sphere - interpreting a research paper

Compute the domain of the real-valued function $f(x) = \sqrt{1 + \sqrt{2 - \sqrt{x}}}$.

jsaddern Dec 27, 2021

224

Domain

If 4x = 3y, what is the value of (2x + y)/(3x - y)?

Guest Dec 27, 2021

274

help Algebra

Guest Dec 27, 2021

237

when is coverted to the exponential forre^itheta what is theta

Find constants $A$ and $B$ such that \[\frac{x - 7}{x^2 - x - 2} = \frac{A}{x - 2} + \frac{B}{x + 1}\]for all $x$ such that $x\neq -1$ and $x\neq 2$. Give your answer as the ordered pair $(A,B)$.

Guest Dec 27, 2021

337

Need ASAP help

Joshua rolls two dice to form a two-digit integer. If the number on the first die represents the tens digit and the number on the second die represents the units digit, what is the probability that the integer formed is divisible by 8?

Guest Dec 27, 2021

217

Probability

Line $l_1$ represents the graph of 3x + 4y = -14. Line $l_2$ passes through the point $(-5,-7)$, and is perpendicular to line $l_1$. If line $l_2$ represents the graph of y=mx +b, then find m+b.

Guest Dec 27, 2021

288

Coordinates

How do give likes/thumbs ups (+1 heart) to people?

is it only possible if you're a user unlike a guest (like me)?

Guest Dec 27, 2021

228

Not math but a question about this site

Bridget places a box that is 4x6x8 on the floor. She then places a 2x3x5 box on top of the first box, forming a two-box tower. She will then paint all the surfaces she can paint without moving either of the boxes. She wants to paint as little as possible, read more ..

Guest Dec 27, 2021

289

An ARML problem from the past i think

Let f(x) = 7x + 5 and g(x) = x + 1. If h(x) = f(g(x)) , then what is the inverse of h(x)?

Guest Dec 27, 2021

219

Algebra

A monic polynomial P of degree 5 satisfies P(1)=1, P(2)=4, P(3)=9, P(4)=16, P(5)=73. Find P(6).

Guest Dec 27, 2021

333

i came up with a fun math problem ;)

Segment AB has length 2. Two circles with radii 2sqrt2 are drawn with centers at A and B. The area common to both circles can be represented as , where a and b are positive integers. Find the value read more ..

Guest Dec 27, 2021

224

Segment AB has length 2. Two circles with radii 2sqrt2 are drawn with centers at A and B. The area common to both circles can be

I was working on a problem what does space diagonal mean

Guest Dec 27, 2021

291

What is space diagonal?

I was working on geometry when I saw this problem that contained the phrase: " Space Diagonal"

Can anyone explane to me?

Guest Dec 27, 2021

288

What is a space diagonal?

During a football match in a tournament a goalkeepers save rate was given as 33%. After saving the next shot on target it rose to 40%. How many more shots on target does he need to save to raise his save rate to $60$%?

Guest Dec 27, 2021

227

Algebra