All Questions ⁺⁰237726 Questions

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254

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Pls help on Precalc

The vectors $\mathbf{a},$ $\mathbf{b},$ and $\mathbf{c}$ satisfy $\|\mathbf{a}\| = \|\mathbf{b}\| = 1,$ $\|\mathbf{c}\| = 2,$ and \[\mathbf{a} \times (\mathbf{a} \times \mathbf{c}) + \mathbf{b} = \mathbf{0}.\]If $\theta$ is the angle between $\mathbf{a}$ read more ..

Guest Jun 7, 2022

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217

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Parabola

The graph of y = f(x) is a parabola whose vertex is at The graph of y = f(x - 3) is also a parabola. Where is the vertex of the graph of y = f(x-3)? Write your answer as an ordered pair.

Guest Jun 7, 2022

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300

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Algebra

The roots of the equation sum to 6 and multiply to 10. What is the value of m + n?

Guest Jun 7, 2022

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196

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Algebra

Let a and b be the solutions of the equation 2x^2 - 10x + 5 = x^2 + 1. What is the value of (2a - 3)(4b - 6)?

Guest Jun 7, 2022

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398

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Find the number of complex numbers z such that

Find the number of complex numbers z such that

Guest Jun 7, 2022

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218

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hard probability

When I go to work, there's a 20% probability that I'll forget my office keys and a 30% probability that I'll forget my wallet. If there's a 10% probability that I forget both, then what's the probability that I arrive at work with both my office keys and read more ..

Guest Jun 7, 2022

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223

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Counting question

How many ways are there to divide a group of 6 friends among the basketball team and the soccer team? (Each team could have anywhere from 0 to 6 of the friends on it. Assume the friends are distinguishable.)

Guest Jun 7, 2022

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214

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Roots of quadratic

If the roots of the equation 3x^2 - 6x + 5 = 0 are a and b, then find the quadratic whose roots are a + b and 2/(a + b).

Guest Jun 7, 2022

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284

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quadratic

I choose a random integer n between 1 and 10 inclusive. What is the probability that for the n I chose, there exist no real solutions to the equation ? Express your answer as a common fraction.

Guest Jun 7, 2022

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213

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Let z and w be complex numbers satisfying |z|=4 and |w|=2

Let z and w be complex numbers satisfying |z|=4 and |w|=2.

Find the values of some of these cannot be found with the info given.

Guest Jun 7, 2022

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287

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need help with probability

The sum of two dice rolls is 6. What is the probability that the number 3 appeared at least once?

Guest Jun 7, 2022

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215

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Function

Find all values of k so that the domain of
is the set of all real numbers.

Guest Jun 7, 2022

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289

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help with coordinates

Find the points of intersection of the line 4x - 3y - 10 = 0 and the circle x^2 + y^2 - 2x + 4y - 20 = 0.

Guest Jun 7, 2022

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278

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Quadratic

Let 7x^2 + 5x = h - x^2 + x. What value of h will give us exactly one solution for x?

Guest Jun 7, 2022

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301

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Clock problem

What is the measure, in degrees, of the acute angle formed by the minute hand and the hour hand on a standard clock when it indicates 9:45?

Guest Jun 7, 2022

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282

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geometry

In the figure shown, ABCD is a square and CDE is equilateral. What is the degree measure of CBE?

Guest Jun 7, 2022

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289

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help geometry

In the diagram below, AM = BM = CM and angle BMC + angle A = Find angle B in degrees.

Guest Jun 7, 2022

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311

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Robin earned $4,320 in 9 weeks and worked 40 hours in each week. How much did he earn per hour?

Guest Jun 7, 2022

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292

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Coordinates

A segment with endpoints at A(2,-2) and B(14,4) is extended through B to point C. If BC = 3*AB, what are the coordinates for point C? Express your answer as an ordered pair.

Guest Jun 7, 2022

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277

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Sum

Evaluate the sum 6/(3^2 - 1) + 6/(4^2 - 1) + 6/(5^2 - 1) + 6/(6^2 - 1) + 6/(7^2 - 1) + ...

Guest Jun 7, 2022

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207

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one auditorium has 40 meter length, 35 meter breath, 10 meter height and 15 centimeter what is the volume of this auditorium

one auditorium has 40 meter length, 35 meter breath, 10 meter height and 15 centimeter what is the volume of this auditorium

Guest Jun 7, 2022

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304

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geometric sequence

If c(1) = 3/16 and c(n) = c(n - 1)*4, then what is the third term in the sequence?

Guest Jun 7, 2022

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