All Questions ⁺⁰237643 Questions

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225

2

help

If and , what is the value of ?

Guest Jan 8, 2023

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243

5

Probability

A stick is broken at two points. If the length of the stick is 6, then what is the probability that all three resulting pieces are shorter than 3 units?

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Guest Jan 8, 2023

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196

1

Probability

Two points on a circle of raadius 1 are chosen at random. Find the probability that the distance between the two points is at most 1.5.

Guest Jan 8, 2023

+1

214

1

help plz

In a sequence of coin flips, a run is a series of consecutive coin flips that are all the same. For example, in the sequence
the red letters form a run.

If a fair coin is flipped two times, what is the expected length read more ..

Guest Jan 8, 2023

0

189

3

combinations problem that can't rack my brain. appreciate help

You roll 4 fair dice with the numbers 1, 2, 3, 4, 5, and 6. What is the probability that AT LEAST 2 dice roll a 3?

I want a thorough explanation pls!
read more ..

Guest Jan 8, 2023

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186

1

help plz

find an equation for the normal to the curve defined by x^4+y^2-3xy+1=0 at the point with the coordinates (1,1)

Guest Jan 8, 2023

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223

1

Algebra

A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 50% magical syrup by volume (and the rest is just water), and blue potion, which read more ..

Guest Jan 8, 2023

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155

0

binomials

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

Guest Jan 8, 2023

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162

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Counting

For some real number a and some positive integer n, the first few terms in the expansion of (1 + ax)^n are
1 + 10x + 150 x^2 + cx^3 + ...

Find c. read more ..

Guest Jan 8, 2023

0

221

2

Please Help

The product of the roots of 2x^2 - 7x + N = 0 is -5. Find N.

Guest Jan 8, 2023

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186

1

counting problem

Find the number of solutions to
x_1 + x_2 + x_3 + x_4 + x_5 + x_6 + x_7 + x_8 + x_9 + x_10 <= 2
in nonnegagive integers.

Guest Jan 8, 2023

0

259

2

Exponents

what is the value of n such that, 81^n=9*27*27*9?

Guest Jan 8, 2023

0

187

1

helpp

An item is regularly priced at $83. Deon bought it on sale for 30% off the regular price.

Guest Jan 8, 2023

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161

0

binomials

For nonnnegative integers a and b, where a >= 2 and b >= 2, simplify
binom{a + b}{2} + binom{2a + b}{2} + binom{a + 2b}{2} - binom{a - b}{2}

Guest Jan 8, 2023

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190

1

geometry

In triangle PQR, M is the midpoint of PQ. Let X be the point on QR such that PX bisects angle QPR, and let the perpendicular bisector of PQ intersect AX at Y. If PQ = 36, PR = 22, QR = 26, and MY = 8, then find the area read more ..

Guest Jan 8, 2023

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209

1

help

Grogg, Lizzie, Alex, Winnie, and Max each own a hat marked with the first letter of their name. All five hats are placed in a bag. Each beast then removes one hat from the bag in turn at random and places it on their head. Once this is done, what is the read more ..

Guest Jan 8, 2023

Jan 7, 2023

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162

0

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 Jan 7, 2023

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160

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Coordinates

A median of a triangle is a line segment joining a vertex of a triangle to the midpoint of the opposite side. The three medians of a triangle are drawn below.

Note that the three medians appear to intersect at the same point! Let's read more ..

Guest Jan 7, 2023

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197

1

plz help

(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)

(b) Find the number of ways that Magnus can give out 20 identical stickers to 5 of read more ..

Guest Jan 7, 2023

0

206

1

Right triangles

How many non-congruent right triangles are there, all of whose sides are poisitve integer lengths, and one of whsoe legs (i.e. not the hypotenuse) has length 12?

Guest Jan 7, 2023

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173

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Equation

What is the largest number c such that 2x^2 + 5x + c = x^2 - 4x has at least one real solution? Express your answer as a common fraction.

Guest Jan 7, 2023

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172

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geometry

https://web2.0calc.com/questions/geometry_73043

Guest Jan 7, 2023

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157

0

plz help

locate and classify the stationary points on the curve with the equation y=x^3+3x^2+3x-6

Guest Jan 7, 2023

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174

0

Algebra

Fill in the blanks to make the equation true. (Each blank should contain a 2-digit number)

18/18 + 19/18 + 20/18 + ... + 45/18
read more ..

Guest Jan 7, 2023

0

197

1

Consant term

Find the constant term in the expansion of (2z - 1/(z*sqrt(z)) + 1)^4.

Guest Jan 7, 2023

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