All Questions ⁺⁰237783 Questions

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Algebra

A 100-foot rope is cut into three pieces. The first piece is three times as long as the second, and the third piece is feet shorter than the second. How many feet long is the shortest piece?

Guest May 17, 2022

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224

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Divisors

If we let f(n) denote the sum of all the divisors of the integer n, how many integers i exist such that 1 <= i <= 2010 and f(i) = 1 + i?

Guest May 17, 2022

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224

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Isosceles Triangle

The lengths of the sides of isosceles triangle ABC are 3x+62, 7x+30, and feet. What is the least possible number of feet in the perimeter of triange ABC?

Guest May 17, 2022

May 16, 2022

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226

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Math

5 pencils and 4 crayons are 26.5 inches. 6 pencils and 5 crayons are 32.1 inches. Each pencil is the same length as the other pencils, and each crayon is the read more ..

Guest May 16, 2022

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207

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Polygon

In convex pentagon ABCDE, angles A, B and C are congruent and angles D and E are congruent. If the measure of angle A is 50 degrees less than the measure of angle D, what is the measure of angle D?

Guest May 16, 2022

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226

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Prism

What is the total surface area of this prism?

Guest May 16, 2022

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312

4

geometry word problem.

A circle with radius r is located in the first quadrant of the coordinate plane, so that it is tangent to both the x-axis and the y-axis. It is also tangent to the circle with center (3, 0) and radius 1. Find the sum of all possible values of r.
<read more ..

Guest May 16, 2022

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197

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domain

The domain of the function h(x) = sqrt(81-x^2) + sqrt(-(x-10)) is an interval of what width?

Guest May 16, 2022

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284

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+24

please help im not sure how to answer this

Let F =(3, 3). The points P= (x, y) that are equidistant from F and the line y = -5 form a parabola. Find the points where this parabola meets the x-axis. b) find an equation for the parabola.

OdrogMath May 16, 2022

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219

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counting

How many ways are there to divide a red bracelet, a yellow bracelet, a green bracelet, and a black bracelet among 4 people if someone must receive exactly two bracelets?

Guest May 16, 2022

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604

5

HELP! I tried multiple ways but still couldn't figure out how to solve this!!

Let
Then P can be expressed in the form where a, b, and c are positive integers. Find the smallest possible value of a+b+c.

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Guest May 16, 2022

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335

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Domain

Find the domain of the real-valued function
f(x) = -sqrt(-10x^2 - 4x + 6)

Give the endpoints in your answer as common fractions, not mixed numbers or decimals. read more ..

Guest May 16, 2022

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297

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Complex numbers

If Q = 11 - 5i, E = 11i, and D = 2i, find Q*E*D.

Guest May 16, 2022

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319

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Complex numbers

Express (4 - 5i)(5 + 5i) in the form a + bi, where a and b are integers and i^2 = -1.

Guest May 16, 2022

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232

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Probability

A point in space (x,y,z) is randomly selected so that $-1\le x \le 1$,$-1\le y \le 1$,$-1\le z \le 1$. What is the probability that $x + y +z \le 1$?

Guest May 16, 2022

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315

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Roots

Let a, b, and c be the roots of 24x^3 - 121x^2 + 87x - 8 = 0. Find

Guest May 16, 2022

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273

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Geometry

All the sides of a triangle are integers, and the perimeter is . How many different possible triangles are there? (Assume that the triangle is non-degenerate. Two triangles are considered the same if they are congruent.)

Guest May 16, 2022

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280

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Modular arithmetic

Find the modular inverse of 27, modulo . Express your answer as an integer from 0 to 27, inclusive.

Guest May 16, 2022

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313

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+22

help please.

The sequence x1,x2 ,x3 , . . ., has the property that xn=xn-1+xn-2 for all x is greater or equal to 3. If x11-x1=99, then determine x6.

oofta May 16, 2022

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271

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GCF

Find the GCF of the monomials 10p^2, 25pq, 15q^2, and 2p.

Guest May 16, 2022

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265

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The ornament below is composed of two congruent square pyramids.

The ornament below is composed of two congruent square pyramids. Each square pyramid has base side lengths of 2 inches and a height of 2.5 inches.
What is the volume, in cubic inches, of the ornament?

Guest May 16, 2022

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309

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Quadratic

If m is a real number and 2x^2 + mx + 18 has two distinct real roots, then what are the possible values of m? Express your answer in interval notation.

Guest May 16, 2022

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214

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Polynomials

The polynomial f(x) has degree 3. If f(0) = 4, f(1)= -2 , f(3) = 0, and f(3) = 28, then what are the x -intercepts of the graph of f(x)?

Guest May 16, 2022

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283

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Algebra

find 3 positive consecutive integers such that the product of the first and the third integer is 17 more than three times the second integer

Guest May 16, 2022

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220

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functions

Let N,O be functions such that N(x) = 2*sqrt(x), and O(x) = x^2. What is N(O(N(O(N(O(3)))))?

Guest May 16, 2022

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