All Questions ⁺⁰238221 Questions

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159

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math problem

This is some very hard geometry
Triangle XYZ is equilateral. Points Y and Z lie on a circle centered at O, such that X is the circumcenter of triangle OYZ, and X lies inside triangle OYZ. If the read more ..

Guest Jul 12, 2023

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161

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solve

If I give my brother 5 dollars, then we will have the same amount of money. If instead he gives me 25 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?

Guest Jul 12, 2023

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164

3

Area of Triangle

Triangle ABC has its 3 altitudes H(a) =16, H(b) =18 and H(c) =20. What is the area of this triangle? Thank you.

Guest Jul 12, 2023

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171

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triangle

Help Im bad at geometry
In triangle ABC, let the angle bisectors be BY and CZ. Given AB = 16, AY = 16, and CY = 16, find BC and BZ.

Guest Jul 12, 2023

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174

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proportion

I need help with this
In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to resistance, R:
I = V/R
It's also true that resistance is directly proportional read more ..

Guest Jul 12, 2023

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80

2

+8

Queen game

There is a field x on y, two players, in turn, rearrange the queen from the lower left corner to the upper right one by n cells vertically, or horizontally, or d cells diagonally (right-up). The one who cannot make a move loses. Does the player who started read more ..

CameronLord Jul 12, 2023

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154

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solve

Solve for the variable x in terms of y and z, assuming y \neq \frac{1}{2}:
xy + x = \frac{3x + 2y + z + y + 2z}{3}

Guest Jul 12, 2023

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185

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rates

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 50 miles per hour instead, then I would have arrived 45 minutes later. How many miles did I drive?

Guest Jul 12, 2023

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171

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quadratic

Find all values of x such that 3x^2 + 14x + 8 = x^2 - 2x + 6. If you find more than one value, then list your solutions, separated by commas.

Guest Jul 12, 2023

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146

3

Can someone draw me a diagram

There exists a not necessarily convex quadrilateral ABCD such that ∠B = ∠C = 60◦ and ∠A = 30◦ . Lines AB and CD intersect at E, lines AD and BC intersect at F, and EF meets BD at P. If CF = AE = 1, then EP2 can be expressed as m n where m and n are relatively read more ..

Guest Jul 12, 2023

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177

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polynomials

Let f(x) = x^{10}+5x^9-8x^8+7x^7-x^6-12x^5+4x^4-8x^3+12x^2-5x-5-x^10-5x^9+8x^8-7x^7+x^6+12x^5-4x^4+8x^3-12x^2.
Without using long division (which would be horribly nasty!), find the remainder when f(x) is divided by x^2-1.

Guest Jul 12, 2023

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186

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need help with system

plz help with systems
For certain values of k and m, the system
3a + 2b = 2
6a + 2b = k + 3a + mb read more ..

Guest Jul 12, 2023

Jul 11, 2023

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143

3

I don't even know where to start

Warehouse A has 5 times as many employees as Warehouse B, and Warehouse C has 3 times as many employees as Warehouse B. Warehouse A has how many times as many employees as Warehouse C?

Guest Jul 11, 2023

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167

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solve

Solve 3a + 4b = 5a - 6b + 24 - 3a for a in terms of b.

Guest Jul 11, 2023

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137

2

need help

For any positive integer n, let f(n) = 4n/(sqrt(2n - 1) + sqrt(2n + 1)). find the sum of f(1)+f(2)+...+ f(40)

Guest Jul 11, 2023

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88

2

+1348

Primes

Goldbach's conjecture states that every even number greater than two can be expressed as the sum of two prime numbers. For example, $2022 = 191 + 1831.$ How many ordered pairs of prime numbers have a sum of $100 \,?$

sandwich Jul 11, 2023

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109

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+1348

Question on Prisms

I need help plz
Both of the right triangular prisms shown have bases that are right triangles with hypotenuse length $10$ cm. One prism has height $x$ and a base leg of length $6$ cm. The other prism has height $(x - 2)$ cm and a base read more ..

sandwich Jul 11, 2023

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143

2

+44

Quick question about Algebra

How do you find values of a and b, if you are given a+b and ab (and also a^3 + b^3)?
The question I have is: find all the possible solutions of a and b, given a+b=14 and a^3+b^3=812.
Using this information, read more ..

ANITBIOTICS Jul 11, 2023

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152

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percent

Our badminton team has finished 75% of its season. So far, we have won 10% of the games we played. What percent of the remainder of our games must we win in order to finish the season with the same number of wins as losses? read more ..

Guest Jul 11, 2023

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143

4

+194

Please help and post the CORRECT answer

If $-6\leq a \leq -2$ and $3 \leq b \leq 5$, what is the greatest possible value of $\displaystyle\left(a+\frac{1}{b}\right)\left(\frac{1}{b}-a\right) $? Express your answer as a common fraction.

HumenBeing Jul 11, 2023

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