All Questions ⁺⁰237690 Questions

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154

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Probability

I need the answer to this

Right triangle XYZ has legs of length XY = 12 and YZ = 6. Point D is chosen at random within the triangle XYZ. What is the probability that the area of triangle XYD is at most 20?

Guest Mar 4, 2023

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183

1

Algebra

Factor (ab + ac + bc)^3 - a^3*b^3.

Guest Mar 4, 2023

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163

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Precalc

The position of a particle is given by the parametric equations
x = sqrt(t^2 + t)
y = t^2 - 1
as t ranges over all real numbers. read more ..

Guest Mar 4, 2023

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149

0

Counting

I have to count these for class

There are 18 padded chairs around a circular table, and the chairs are numbered from 1 through 18 . How many ways can five people take their seats, so that no two people are adjacent? read more ..

Guest Mar 4, 2023

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183

1

Counting

Find the number of six-digit numbers, where the sum of the digits is divisible by 8.

Guest Mar 4, 2023

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147

6

+1124

Minimum Value

Hi friends,

Please kindly explain this to me:
read more ..

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juriemagic Mar 4, 2023

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174

0

You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%.

You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%.

Guest Mar 4, 2023

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147

1

Counting

Find the positive integer n such that the expansion of (4x - 7y)^n contains a term of the form cx^2*y.

Guest Mar 4, 2023

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186

3

help plz

Find the number of six-digit numbers, where the sum of the digits is divisible by 10

Guest Mar 4, 2023

0

198

1

Need help on ixl writing a quadractic function

A parabola opening up or down has vertex (0,2) and passes through (4,1). Write its equation in vertex form.

Guest Mar 4, 2023

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174

1

Counting

Find the number of positive integers that satisfy both the following conditions:
Each digit is a 1 or a 2 or a 3
The sum of the digits is 5

Guest Mar 4, 2023

0

179

1

+4

What is the sum of the digits in the expansion of

10^36 + 26
----- <= fraction
18
read more ..

Ilovemeself Mar 4, 2023

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154

0

geometry

Plz help with geometry problem

In the diagram below, PQRS is a parallelogram with a perimeter of 26 and an area of 28. What is the perimeter of rectangle OSTQ? Include an explanation of how you solved the problem. read more ..

Guest Mar 4, 2023

Mar 3, 2023

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149

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Algebra

Let r be a root of x^3 - 2x + 5 = x^3 - x^2 + 9. Show that none of r, r^2, or r^3 is irrational.

Guest Mar 3, 2023

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178

0

In the given pattern find the 9th number in the 121st row 1 23 654 789 10 15 14 13 12 11

In the given pattern find the 9th number in the 121st row
1
23
654
789 10 <#> 15 14 13 12 11

Guest Mar 3, 2023

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176

1

pattern to solve

86, 116, 153, ...
(86+30=116, 116+37=153. pattern continues like this with the number being added increasing by 7 each time.)

find the 30th term read more ..

Guest Mar 3, 2023

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154

0

Inequality

Let a, b, and c be nonnegative real numbers. Prove that for all x >= 0,
(x + abc)^3 >= abc(x + a)(x + b)(x + c) >= (x + a + b + c)^3.

Guest Mar 3, 2023

0

159

0

Polynomials

Find a polynomial f(x) of degree 5 such that both of these properties hold:
* f(x) is divisible by x^3
* f(x) + 1 is divisible by (x+ 1)(x + 2)(x + 3)
read more ..

Guest Mar 3, 2023

0

191

1

counting

When it rains, every student in Margo's school brings a raincoat, an umbrella, or both. And of the students bring both. The total number of umbrellas brought is equal to twice the number of raincoats.

What percent of the read more ..

Guest Mar 3, 2023

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