All Questions

250

Domain

Suppose a function f(x) is defined on the domain [-8,4]. If we define a new function g(x) by
g(x) = f(2x - 1)
then what is the domain of g(x)? Express your answer in interval notation.

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Guest Jul 18, 2021

310

help geometry

Let A_1 A_2 A_3 ... A_{10} be a regular polygon. A rotation centered at A_1 with an angle of a takes A_5 to A_7. Given that a <180 degrees, find a in degrees.

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Guest Jul 18, 2021

337

+41

HELP PLZ

What is the domain of the function$$f(t) = \frac{1}{(t-1)^2+(t+1)^2}~?$$Express your answer in interval notation.

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CENTTRAL Jul 18, 2021

270

+68

Help asap please

(a) Let a be a cube root of unity, and let b be a fifth root of unity. Prove that ab is a root of unity.
(b) Let a be a primitive cube root of unity, and b be a primitive fifth root of unity. Prove that ab is a primitive root of unity. read more ..

brinlin Jul 18, 2021

395

GEOMETRY PLS HELP

In triangle PQR, PQ=13, QR=14, and PR=15. Let M be the midpoint of QR. Find PM.

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Guest Jul 18, 2021

412

Ratios

The number of roses, sunflowers and tulips a florist has are in the ratio 5:6:9
after the Florist sells 50 roses, the ratio becomes 3:4:6
Find the number of roses left after 50 of them are sold

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Guest Jul 18, 2021

411

Finding the length of a zip line (Measuring distance)

A zip line runs from the top of a platform on the edge of a pond to the ground across the pond. A camp counselor places a mirror on the edge of the pond across from the platform and stands back until the top of the platform is visible in the mirror. read more ..

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Guest Jul 18, 2021

703

+11

I need help idk how to do this

Consider the quadratic expression 13x^2+nx-17. For certain values of n, it may be factored into a product of two linear polynomials, both of which have integer coefficients. What are all such values of n?

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legendarymyth666 Jul 18, 2021

408

+100

halp!

if a and b are roots of equation , and , what is p?

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Wsai12 Jul 18, 2021

Jul 17, 2021

419

+41

Algebra

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

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CENTTRAL Jul 17, 2021

353

Answer this please

Monica tosses a fair 6-sided die. If the roll is a prime number, then she wins that amount of dollars (so that, for example, if she rolls 3, then she wins 3 dollars). If the roll is composite, she wins nothing. Otherwise, she loses 3 dollars. What is the read more ..

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Guest Jul 17, 2021

293

Please answer this question

Point $(x,y)$ is randomly picked from the rectangular region with vertices at $(0,0),(2008,0),(2008,2009),$ and $(0,2009)$. What is the probability that $x > 2y$? Express your answer as a common fraction.

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Guest Jul 17, 2021

214

Algebra

Simplify the following (2y-1)(4y^{10}+2y^9+4y^8+2y^7 + y^6) Express your answer as a polynomial with the degrees of the terms in decreasing order.

Guest Jul 17, 2021

346

Geometry

A right triangle has legs of length 6 and b and a hypotenuse of length c . The perimeter of the triangle is 12. Compute c.

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Guest Jul 17, 2021

252

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.

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Guest Jul 17, 2021

387

+41

ALGEBRA

Given $f(x) = \frac{\sqrt{x-1}}{x-2}$, what is the smallest possible integer value for $x$ such that $f(x)$ has a real number value?

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CENTTRAL Jul 17, 2021

339

help please

both the bus and you get to the bus stop at random times between 12 pm and 1 pm. when the bus arrives, it waits for 5 minutes before leaving. when you arrive, you wait for 20 minutes before leaving if the bus doesn't come. what is the probability that you read more ..

Guest Jul 17, 2021

255

probability question

given a, b such that 0

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Guest Jul 17, 2021

263

math help

adam, brian, and charles each randomly pick a real number between 0 and 1. what is the probability that the sum of the squares of their numbers <=1 ?

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Guest Jul 17, 2021

422

+514

sum

If two composite numbers are relatively prime and their least common multiple is 126, find the sum of these two numbers.

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mworkhard222 Jul 17, 2021

263

Please help fast

The Angles of triangle △ABC△ABC are 40∘,60∘,80∘. The inscribed circle is tangent to its sides at points H,K,L. What are the angles of the triangle △HKL?

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Guest Jul 17, 2021

410

+41

Quick Question :)

How many real numbers are not in the domain of the function$$f(x) = \frac{1}{x-64} + \frac{1}{x^2-64} + \frac{1}{x^3-64}~?$$

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CENTTRAL Jul 17, 2021

261

Help Please...

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

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Guest Jul 17, 2021

499

+874

Function Composition

A function $f(x)$ is defined by $f(x) = f(x) = \frac{x - \sqrt{3}}{x\sqrt{3} + 1}.$
Find $f^{2021}(x)$

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MathProblemSolver101 Jul 17, 2021

310

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?

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Guest Jul 17, 2021

All Questions ⁺⁰230566 Questions

Domain

help geometry

HELP PLZ

Help asap please

GEOMETRY PLS HELP

Ratios

Finding the length of a zip line (Measuring distance)

I need help idk how to do this

halp!

Algebra

Answer this please

Please answer this question

Algebra

Geometry

Number Theory

ALGEBRA

help please

probability question

math help

sum

Please help fast

Quick Question :)

Help Please...

Function Composition

Algebra

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