All Questions ⁺⁰237643 Questions

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Geometry

1. In△ABC, we know that AB=5, BC=9, and CA=7.D is a point on BC such that AD
bisects ∠BAC. What is DC?
2. O is the circumcenter of △ABC. If OB = OC = BC, what is ∠BAC?
read more ..

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Chickenfingrrss Dec 19, 2022

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181

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which ratio is the same 2/3

which ratio is the same 2/3

1) 8/12 read more ..

Guest Dec 19, 2022

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171

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Functions

The functions f and h are defined as follows:
f(x) = (x + 5)/(x - 7) and h(x) = (x + 5)(x - 7).

Explain why the functions f and h are not the same function. read more ..

Guest Dec 19, 2022

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174

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Mathematic questions

Hello my math question is 1 / 6 of 18 is

Guest Dec 19, 2022

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223

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Pentagon A'B'C'D'E' is the image of pentagon ABCDE after a dilation centered at F. What is the scale factor of this dilation

Pentagon A'B'C'D'E' is the image of pentagon ABCDE after a dilation centered at F. What is the scale factor of this dilation

Guest Dec 19, 2022

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171

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Which of the following represents the solution set for the simultaneous equations y=x+2y=x+2 and y=x2y=x2?

y=x+2y=x+2 and y=x2y=x2 ?

Guest Dec 19, 2022

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169

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square numbers between 10 and 50 denote the set a in venn diagram

a= square numbers between 10 and 50 denote the set a in venn diagram

Guest Dec 19, 2022

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183

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Probability

A bag contains five white balls and three black balls. Your goal is to draw two white balls.

(a) You simultaneously draw two balls at random. What is the probability that they are both white?
(b) You simultaneously draw two balls read more ..

Guest Dec 19, 2022

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164

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Function

The function f(n) satisfies
binom(2n)n - binom(2n + 1)(2n) = f(n) *binom(2n + 1)(n + 1)
for all positive integers n. Find f(n).

Guest Dec 19, 2022

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165

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Algebra

Let c be a real number, and consider the system of quadratic equations
y = 6x^2 - 9x + c - x^2 - x
y = 5x^2 - 3x + x^2 + 2x

For which values of c does this system have:
(a) Exactly one real solution (x,y)
(b) More than read more ..

Guest Dec 19, 2022

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168

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Algebra

Find all real numbers x such that (3x - 27)^3 + (27x - 3)^3 = (3x + 27x - 30).

Guest Dec 19, 2022

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176

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help with triangle

Let ABC be a triangle, and let its angle bisectors be AD, BE, and CF, which intersect at I. If DI = 3, BD = 4, and BI = 8, then find the area of triangle ABC.

Guest Dec 19, 2022

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Algebra

Find all solutions to the system
a + b = 14
a^3 + b^3 = 812 + a^2 + b^2

Guest Dec 19, 2022

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225

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help counting

Find the number of positive integers that satisfy the following conditions:
* Each digit is a 1 or a 2 or a 3
* The sum of the digits is 10

Guest Dec 19, 2022

Dec 18, 2022

+22

232

7

+1307

Please help me asap.

How many positive integers less than or equal to 100 have a prime factor that is greater than 4?

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dolphinia Dec 18, 2022

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217

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Each square of a 3x3 grid of squares is painted black or white with equal probability.

Each square of a 3x3 grid of squares is painted black or white with equal probability. What is the chance that the grid does not contain a 2x2 square that is entirely white?

Guest Dec 18, 2022

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207

2

Five standard six-sided dice are rolled. What is the probability that at least 3 of them show a 6 as the top face?

Five standard six-sided dice are rolled. What is the probability that at least 3 of them show a 6 as the top face?

Guest Dec 18, 2022

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207

1

How many positive integers less than are relatively prime to ?

How many positive integers less than are relatively prime to ?

Guest Dec 18, 2022

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201

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counting question

In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color, and at lest three of the squares are red. How many ways are there to color the five squares?

Guest Dec 18, 2022

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162

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Fractions

Levans writes a positive fraction in which the numerator and denominator are integers, and the numerator is 1 greater than the denominator. He then writes several more fractions. To make each new fraction, he increases both the numerator and the denominator read more ..

Guest Dec 18, 2022

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173

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help algebra

Consider the two expressions (6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)/(2x + 3 - 7x - 11) and 4x^2 - 7 + 1/(2x + 3 - 7x - 11)
a) Show that the two expressions represent equal numbers when x = 10
b) Explain why these two expressions do not represent read more ..

Guest Dec 18, 2022

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165

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Graph

What is the smallest distance between the origin and a point on the graph of y = 1/2*(x^2 - 8)?

Guest Dec 18, 2022

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