All Questions ⁺⁰230590 Questions

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811

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Probability

The following cards are dealt to three people at random, so that everyone gets the same number of cards. What is the probability that everyone gets a red card?

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Guest Nov 15, 2021

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370

1

+99

Math help please

Can someone help me on this problem

Jxalskdfjarkfhqwio3r Nov 15, 2021

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475

1

+101

two concentric circles are drawn so that the shaded area is equal to unshaded area. The radius of the outer circle is 6 cm. Find the differe

two concentric circles are drawn so that the shaded area is equal to unshaded area. The radius of the outer circle is 6 cm. Find the difference in the radii of the two circles

vxnessa Nov 15, 2021

Nov 14, 2021

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209

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Help

Solve the inequality 2x > -10 Give your answer in interval notation.

Guest Nov 14, 2021

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168

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Domain

What is the domain of the real-valued function
q(x) = sqrt(x)/sqrt(-1 + x^2)?
Express your answer as an interval or as a union of intervals.

Guest Nov 14, 2021

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179

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Coordinates

Points A(0,0), B(6,0), C(6,10) and D(0,10) are vertices of rectangle ABCD, and E is on segment AB at (2,0) . What is the ratio of the area of triangle ADE to the area of quadrilateral ABCD? Express your answer as a common fraction. read more ..

Guest Nov 14, 2021

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159

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Chance math question

Some game involves rolling 10 times.
Each roll has a of 8.2% chance of success.
You play this game twice in a row.
What is the chance of achieving success at least three times, in both games? read more ..

Guest Nov 14, 2021

+1

316

2

Help

A position vs. time graph for a uniformly accelerating skateboarder riding down a ramp is shown below.

What is the acceleration of read more ..

Guest Nov 14, 2021

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234

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geometry

A sphere is inscribed inside a hemisphere of radius 2. A cube is inscribed in the sphere. What is the volume of this cube?

Guest Nov 14, 2021

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304

2

+4

Help!

Compute $\dbinom{5}{1}$

oiwrhtgoerhtgeoh Nov 14, 2021

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233

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Trapezoid

What is the area of the trapezoid shown? Express your answer in the simplest exact form.

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Guest Nov 14, 2021

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337

2

halp

A bicyclist brakes while approaching a stop sign, accelerating uniformly as the bike slows to a stop. The bicyclist presses the brakes when 3.3m away from the stop sign and it takes the bike 2.4s to stop at the stop sign. What was the acceleration read more ..

Guest Nov 14, 2021

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195

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Help please

Paul has a mix of quarters and dimes in his piggybank. He has twice as many dimes than he has quarters. He counts all his coins and notices that he has nine dollars in total. How many quarters does Paul have?

Guest Nov 14, 2021

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284

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${x}^{2} + 2x = 8$

Can anyone use the p-q formula to solve this equation?

Thanks in advance read more ..

Guest Nov 14, 2021

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264

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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 Nov 14, 2021

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321

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Algebra

If f(x) = (x + 4)/(x^2 + ax + b), and f(x) has two vertical asymptotes at x = 1 and x = 2, find the sum of a and b.

Guest Nov 14, 2021

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292

1

HELPPPPP

The shaded sector of the circle below has an area of 4 pi what is the radius of the circle

Guest Nov 14, 2021

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240

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Domain problem

What is the domain of the real-valued function f(x) = (2x - 7)/sqrt(x^2 - 5x + 1)?

Guest Nov 14, 2021

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185

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Complex Numbers

William Sydney Porter tried to perform the calculation (-3 + 4i)/(1 + 3i). However, he accidentally missed the minus sign, finding (3 + 4i)/(1 + 3i) = 3/2 - 1/2*i. What answer should he have obtained?

Guest Nov 14, 2021

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211

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Algebra

x and y are nonzero real numbers such that x^2 + xy + y^2, find the value of (x^2001 + y^2001)/(x + y)^2001.

Guest Nov 14, 2021

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213

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geometry

In the figure below, isosceles triangle ABC with base AB has altitude CH = 24 cm, DE = GF, HF = 12 cm, and FB = 8 cm. find area of CDEFG

Guest Nov 14, 2021

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259

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pls help

Points A, B, and C are given in the coordinate plane. There exists a point Q and a constant k such that for any point P, PA^2 + PB^2 + PC^2 = 3PQ^2 + k. If A = (4,-1), B = (-3,1), and C = (5,-3), then find the constant read more ..

Guest Nov 14, 2021

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322

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Algebra

Find a monic quartic polynomial f(x) with rational coefficients whose roots include x=1-sqrt2 and x=2+sqrt7. Give your answer in expanded form.

Guest Nov 14, 2021

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