All Questions

272

Coordinates

What is the number of units in the area of the circle with center at P and passing through Q? Express your answer in terms of pi.
P = (0,0), Q = (8,-3)

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Guest Jul 20, 2022

279

Assistance needed please!

Write $\log_a b$ in terms of the natural log.

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Guest Jul 20, 2022

294

Function

Let
f(x) = x^2 + 9 if x > 5
f(x) = 3x - 8 if x <= -5
If f(x)=10, find the sum of all possible values of x.

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Guest Jul 20, 2022

287

geometry

The square below has area 100. Find the area of the shaded region

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Guest Jul 20, 2022

255

Help Please!

Let $f$ be a continuous function with domain $[0,1]$ and range $[0,1]$. Prove that $f$ must have a fixed point: that is, there exists some $a \in [0,1]$ such that $f(a) = a$. Is the result still true if the domain and range are $(0,1)$? Why or why not? read more ..

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Guest Jul 20, 2022

262

Help please!

Find an example of a function $f$ with domain $\mathbb{R}$ that is continuous nowhere, but where $|f|$ is continuous on all of $\mathbb{R}$.

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Guest Jul 20, 2022

197

help algebra

Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 - 2xy. For example, to enter the solutions (2,4) and (-3,9), you would enter "(2,4),(-3,9)" (without the quotation marks).

Guest Jul 20, 2022

Jul 19, 2022

263

Algebra

If the cube of a positive number is five times the square of the number, what is the number?

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Guest Jul 19, 2022

215

Number line

On a number line, what number is two-thirds of the way from 5/7 to 4/8? Express your answer as a common fraction.

Guest Jul 19, 2022

367

+1166

Viral triangle question!!! Post your answer!!!

How many triangles are in the figure below?

read more ..

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nerdiest Jul 19, 2022

301

complex roots

The roots of the quadratic equation z^2 + bz + c = 0 are -7 + 2i and -1 - 2i. What is b+c?

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Guest Jul 19, 2022

286

angles

What is the degree measure of angle A in the figure shown here?

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Guest Jul 19, 2022

197

Primes

What is the fewest number of consecutive primes, starting with 2, that when summed produce a number divisible by 17?

Guest Jul 19, 2022

257

Algebra

Sean had 72 dollars in his bank account before he spent 1/3 of it on a birthday present for his mom. He then deposited 53.43 into his bank account. How much money does Sean have in his account now?

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Guest Jul 19, 2022

281

digits

What is the smallest even integer greater than 10,000 that contains three distinct digits?

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Guest Jul 19, 2022

261

Coordinate geometry

What is the area, in square units, of a triangle whose vertices are at (4, -1), (10, -1) and (4, 5)?

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Guest Jul 19, 2022

279

Number Theory

If n gives a remainder of 3 when divided by 7, then what remainder does n^2+1 give when divided by 7?

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Guest Jul 19, 2022

270

Pentagon

In pentagon ABCDE, BC=CD=DE=2 units, angle E$ is a right angle and angle B = angle C = angle D = 120 degrees. The length of segment AE can be expressed in simplest radical form as a+\sqrt{b} units. What read more ..

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Guest Jul 19, 2022

243

triangle problem

The triangle ABC is an isosceles triangle where AB = 4\sqrt{2} and angle B$is a right angle. If I is the incenter of triangle ABC,then what is AI?
Express your answer in the form a + b\sqrt{c}, where a, b, and c are read more ..

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Guest Jul 19, 2022

284

triangle problem

What is the radius of the circle inscribed in triangle ABC if AB = 15, AC = 40, and BC = 50?

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Guest Jul 19, 2022

-2

328

HELP I'M OVERDUE!!!!!11

The letters $A, B$ and $C$ are used to form every possible three letter ``word.'' When these ``words'' are arranged in alphabetical order and numbered so that $AAA$ is Word $1$ and $CCC$ is Word $27$, what number will correspond to the position of word read more ..

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Guest Jul 19, 2022

324

cubes

The volume of a cube is numerically equal to two times the sum of the lengths of its edges. What is the volume, in cubic units, of the cube? Express your answer in simplest radical form.

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Guest Jul 19, 2022

294

+252

The height (in meters) of a shot cannonball follows a trajectory given by $h(t) = -4.9t^2 + 14t - 0.4$ at time $t$ (in seconds). As an impro

The height (in meters) of a shot cannonball follows a trajectory given by $h(t) = -4.9t^2 + 14t - 0.4$ at time $t$ (in seconds). As an improper fraction, for how long is the cannonball above a height of $6$ meters?

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Blizzardshine Jul 19, 2022

254

Counting

The Petersonian alphabet consists of the 5 letters: O, R, Z, S, T. Any sequence of 1-8 letters is a valid word in this language (including words with repeated letters). How many different words does the Petersonian language read more ..

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Guest Jul 19, 2022

255

algebra

Company A sells pencils in packs of 12 for 1.60. Company B sells pencils in packs of 18 for 3 dollars. What is the absolute difference of the total costs fo purchase 360 pencils from each company?

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Guest Jul 19, 2022

All Questions ⁺⁰237785 Questions

Coordinates

Assistance needed please!

Function

geometry

Help Please!

Help please!

help algebra

Algebra

Number line

Viral triangle question!!! Post your answer!!!

complex roots

angles

Primes

Algebra

digits

Coordinate geometry

Number Theory

Pentagon

triangle problem

triangle problem

HELP I'M OVERDUE!!!!!11

cubes

The height (in meters) of a shot cannonball follows a trajectory given by $h(t) = -4.9t^2 + 14t - 0.4$ at time $t$ (in seconds). As an impro

Counting

algebra

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