All Questions ⁺⁰236350 Questions

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277

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Algebra

Linda, Miah, and Noah are all wearing hats with numbers on them. Each person adds the two numbers on the other two hats, and they come up with the totals 11, 17, and What is the largest number that is on a hat?

Guest Apr 23, 2022

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261

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What is the angle formed by the line (1,2,0) + t(-1,2,1) and a normal vector of the plane x+y-z = 4? Give your answer in degrees.

What is the angle formed by the line (1,2,0) + t(-1,2,1) and a normal vector of the plane x+y-z = 4? Give your answer in degrees.

Guest Apr 23, 2022

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278

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Algebra question

What is the smallest distance between the origin and a point on the graph of y = x^2 - 8.

Guest Apr 23, 2022

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183

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Rate problem

Richard needs to fly from San Diego to Halifax, Nova Scotia and back in order to give an important talk about mathematics. On the way to Halifax, he will get a speed boost from the wind which blows at 50 miles per hour (mph). On the way back, the plane read more ..

Guest Apr 23, 2022

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Geometry Problem

Find the value of x.

read more ..

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TheEarlyMathster Apr 23, 2022

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182

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math problem

A point with coordinates is randomly selected such that 0 <= x <= 10 and 0 <= y <= 10. What is the probability that the coordinates of the point will satisfy 3x + 5y >= ? Express your answer as a common fraction.

Guest Apr 23, 2022

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285

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geometry

Consider the grid of points shown below. Find the area of the pink region.

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Guest Apr 23, 2022

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169

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help geometry

Two tangent circles are shown below. One circle is centered at (2,4) with radius 4, and the other circle is centered at (6,1) with radius 1. The equation of a common external tangent to the circles can be written in the form y = mx + b with read more ..

Guest Apr 23, 2022

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291

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Mod arithmetic

FInd the integer n, 0 <= n <= 11, such that n = 1089 (mod 12).

Guest Apr 23, 2022

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300

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3d geo

The center of a regular octahedron is 1 foot away from every vertex. What is the surface area of the octahedron in cubic feet?

Guest Apr 23, 2022

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294

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Algebra Help please!

If 1/x + 1/y = 3 and 1/x - 1/y = -7 what is the value of x+y? Express your answer as a common fraction.

Guest Apr 23, 2022

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203

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annuity

If $2,000 is deposited at the end of each quarter for 2 years into an ordinary annuity earning 7.9% compounded quarterly, construct a balance sheet showing the interest earned during each quarter and the balance at the end of each quarter

Guest Apr 23, 2022

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283

1

Algebra

Let x^2+bx+c=0 be a quadratic whose roots are each two more than the roots of 3x^2-5x-17. What is c?

Guest Apr 23, 2022

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263

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Polynomial problem

The polynomial f(x) has degree 3. If f(0) = 4, f(1)= -2 , f(2) = 0, and f(3) = 31, then what are the x -intercepts of the graph of f(x)?

Guest Apr 23, 2022

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285

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help polynomial

When x^4 + ax^3 + bx +c is divided by (x–1), (x+1), and (x+2), the remainders are 14, 0, and -28 respectively. Find the values of a, b, and c.

Guest Apr 23, 2022

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281

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I need help

David, Evan and Filip go out and buy a computer game. They agree to share the cost equally. Filip only has $4.50 with him. David and Evan agree to pay the rest of Filip' share and he will pay them back. David pays in total 50% more than Evan pays in total. read more ..

Guest Apr 23, 2022

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298

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Algebra

Write each fraction in terms of the LCM of the denominators.

x2/2x − 1; x + 1/x + 9 read more ..

Guest Apr 23, 2022

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269

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3d geometry

The edge length of a regular tetrahedron ABCD is 2. M and N are the midpoints of BC and AD, respectively. Find angle AMD.

Guest Apr 23, 2022

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273

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geometry

Two sides of an isosceles triangle are 10 inches and inches. What is the area of the triangle?

Guest Apr 23, 2022

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301

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I really need help on this...

Guest Apr 23, 2022

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283

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Triangle geometry

The centroid of ABC is G. Find BG.

Guest Apr 23, 2022

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269

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Domain

Find the product of all x such that the expression (x^2 - 4)/(x^2 - 1) is undefined.

Guest Apr 23, 2022

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286

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Counting

In how many ways can 8 people be seated in a row of chairs if three of the people, John, Wilma and Paul, want to sit in three consecutive seats, with Wilma in the middle?

Guest Apr 23, 2022

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299

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degrees pls?

Jabar goes to the playground to play on the swings. The length of each swing is 1.75 m.
What is the distance traveled on one swing, from maximum height to the next maximum height, if the central angle of the swing is 1.4 rad? Give your answer to the read more ..

Guest Apr 23, 2022

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