All Questions ⁺⁰237643 Questions

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207

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Probability

A member of the junior varsity swim team will be elected as President. Each member is equally likely to be elected. The probability that a sophomore is elected is the probability that a freshman is elected. Everyone on the junior varsity read more ..

Guest Jan 10, 2023

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168

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Probability

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

Guest Jan 10, 2023

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250

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help plz

The grid below is made up of line segments, like the line segment in red.

There are a number of paths that go from A to B in the grid, where every step goes to the right or up. If we choose a line segment at random, then read more ..

Guest Jan 10, 2023

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167

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help expected value

Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 5 on them.

How many 5's do we need to add to make the expected value equal to 7?
How many read more ..

Guest Jan 10, 2023

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157

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help probability

Let PQR be an equilateral triangle, centered at O. A point X is chosen at random inside the triangle. Find the probability that X is closer to O than to any of the sides. (In other words, find the probability that XO is read more ..

Guest Jan 10, 2023

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194

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0,36644/0,9(lg(20,9)/0,1+1/2lg(40,95+0,9)/(4*0,95-0,9)) решение этого примера

0,36644/0,9(lg(2*0,9)/0,1+1/2lg(4*0,95+0,9)/(4*0,95-0,9))

Guest Jan 10, 2023

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158

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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 10, 2023

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213

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Quadratic

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 10, 2023

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162

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Graph question

The graph of y = f(x) is shown below.

For each point (a,b) that is on the graph of y = f(x), the point ((a - 7)/2, (3b + 1)/4) is plotted, forming the graph of another function y = g(x). As an example, the point read more ..

Guest Jan 10, 2023

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163

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math

In this problem a,b,c and d are nonzero integers. If a/b is added to x, the sum is c/d. Which statement can be used to prove that x must be a rational number.

Guest Jan 10, 2023

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211

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У меня ответ получился = 10,89% это верно?

Дх = (√(2&20 000/(16 264,46))-1)*100%

Guest Jan 10, 2023

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170

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Expected value

Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 5 on them.

(a) What is the expected value of the number shown when we draw a single slip of read more ..

Guest Jan 10, 2023

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163

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Probability

Four points W, X, Y, and Z are chosen at random on a circle. Find the probabiity that WX > YZ.

Guest Jan 10, 2023

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162

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Probability

Triangle XYZ is equilateral, with O as its center. A point P is chosen at random. Find the probability that P is closer to point O than to any of the side lengths.

Guest Jan 10, 2023

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158

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help with probability

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 Jan 10, 2023

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258

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writing systems of Equations from Context

Jordan and his children went into a restaurant and he bought $26 worth of drinks and tacos. Each drink costs $2.50 and each taco costs $2. He bought 4 more tacos than drinks. Write a system of equations that could be used to determine the number of drinks read more ..

Guest Jan 10, 2023

Jan 9, 2023

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160

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help plz

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

Guest Jan 9, 2023

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156

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Expand

Expand (sqrt(t) + 3t + 1)^3 + (sqrt(t) - 3t + 1)^3.

Guest Jan 9, 2023

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189

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Math

Write an equation in point-slope form of the line that passes through the point (1,0) with slope -1/4

Guest Jan 9, 2023

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