All Questions ⁺⁰236378 Questions

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288

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+24

geometry

In triangle ABC, let I be the incenter and Γ be the circumcircle. Extend AI to intersect the circle at L. Show that L is the circumcenter of triangle BIC

OdrogMath Apr 30, 2022

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285

1

help please

Two perpendicular chords AB and CD intersect at P. If PA = 4, PB = 10, and CD = 13, calculate the length of P to the center of the circle

Guest Apr 30, 2022

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279

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geometry

How many units are in the sum of the lengths of the two longest altitudes in a triangle with sides 8, 12, and 14?

Guest Apr 30, 2022

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281

1

Probability

A drawer contains 3 white balls and 6 black balls. Two balls are drawn out of the box at random. What is the probability that they both are black?

Guest Apr 30, 2022

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275

1

Algebra

Simplify (1+3+5+...+199)/(2+4+6+...+198+200+202).

Guest Apr 30, 2022

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172

0

Probability

Two different numbers are selected simultaneously and at random from the set {1,2,3,4,5,6,7}. What is the probability that the positive difference between the two numbers is 3 or greater? Express your answer as a common fraction.

Guest Apr 30, 2022

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189

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im not sure how to solve this please help

ABCD is a cyclic quadrilateral with circumcircle Γ. Points P, Q, R, and S are the midpoints of arcs AB, BC, CD, and DA, respectively, show that PR is perpendicular to QS.

Guest Apr 30, 2022

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173

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Algebra

A portion of the graph of y=f(x) is shown in red below, where f(x) is a quadratic function. The distance between grid lines is 1 unit.
What is the sum of all distinct numbers x such that f(f(f(x)))=-3 ?

read more ..

Guest Apr 30, 2022

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187

0

geometry help

A circle has radius 5. AB and CD are two parallel chords with AB = 8 and CD = 6. Find all possible lengths of AC.

Guest Apr 30, 2022

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175

0

trig

In right triangle ABC with B = 90, we have sin A = 2 cos A + sin 2A. What is cos A?

Guest Apr 30, 2022

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180

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Algebra

Find all values of z such that z^4 - 4z^2 +4 = 0.

Guest Apr 30, 2022

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286

1

Proportion

If p is inversely proportional to the square of q, and p is 19 when q is 8, determine p when q is equal to 3

Guest Apr 30, 2022

+1

298

3

+42

help <3

Simplify (1 + i\sqrt{3})^6 (the i is outside of the sqrt of 3)

Celestianee Apr 30, 2022

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224

1

Help please

https://web2.0calc.com/questions/math-help-please_66

Guest Apr 30, 2022

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182

0

Decimals

For how many integer values of n between 1 and 1000 inclusive does the decimal representation of n/1375 + n/3 terminate?

Guest Apr 30, 2022

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273

1

Coordinates

The line y = 3x - 10 intersects a circle centered at the origin at A and B. We know the lenght of chord AB is . Find the area of the circle.

Guest Apr 30, 2022

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303

3

questions

1)Simplify i^12345
2)Compute $(1 + i)(2 + i)(3 + i).$

Guest Apr 30, 2022

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238

1

Pls help Cphill!

1. Let G be the center of equilateral triangle XYZ. A dilation centered at G with scale factor -3/4 is applied to triangle XYZ to obtain triangle X'Y'Z'. Let A be the area of the region that is contained in both triangles XYZ and X'Y'Z'. Find read more ..

Guest Apr 30, 2022

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208

1

Trapezoid

Trapezoid ABCD has bases AB and CD. Line segment EF, which is parallel to the bases, divides trapezoid ABCD into two trapezoids of equal area. Find the length EF.

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Guest Apr 30, 2022

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266

1

Probability

Given that a and b are real numbers such that -3 ≤ a ≤ 2 and -1 ≤ b ≤ 4, and values for a and b are chosen at random, what is the probability that product a*b is positive?

Guest Apr 30, 2022

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159

0

trig

What is sin GIH? What is sin GHI?

Guest Apr 30, 2022

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159

0

Algebra

Let x and y be real numbers such that x^2 + y^2 = 2x + 4y + 6x + 8y. Find the largest possible value of x. Find the largest possible value of 3x - 2y.

Guest Apr 30, 2022

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249

1

Impossible geo probs, pls help fast!

1. Let G be the center of equilateral triangle XYZ. A dilation centered at G with scale factor -3/4 is applied to triangle XYZ to obtain triangle X'Y'Z'. Let A be the area of the region that is contained in both triangles XYZ and X'Y'Z'. Find read more ..

Guest Apr 30, 2022

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279

2

Coordinates

Two black lines pass through the origin, as shown below. If their slopes are and , then find the slope of the red line that bisects the acute angle between these lines.

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Guest Apr 30, 2022

0

259

1

+10

HELP FASSSSTTTT!!!!

Helloineedhelp Apr 30, 2022

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