All Questions ⁺⁰237784 Questions

0

449

1

polynomial

Find polynomial f(n) such that for all integers n >= 1 we have
f(n) = 1^3 + 2^3 + 3^3 + ... + n^3

Write f(n) as a polynomial with terms in descending order of n read more ..

Guest May 3, 2021

0

352

1

Trig Ratios/Reasoning

a ladder is leaned against a wall. the distance from the base of the ladder to the wall is 12m.If the ladder is 20m.what angle is it leaning at?

Guest May 3, 2021

0

419

1

Math help!

Let f(x)=x2−2bx, where bb is a constant. What can you say about the zeros, yy-intercept, axis of symmetry and extreme value of f(x) in terms of bb? Justify your answers.

Guest May 3, 2021

0

537

2

Can I please have some help on this problem?

Let x = 2001^1002 -2001^-1002 and y = 2001^1002 + 2001^-1002. Find x^2 - y^2.

Guest May 3, 2021

0

490

1

complex numbers

Suppose z and w are complex numbers. Prove that $z + \overline{z}$ and $w \overline{w}$ are real.

Guest May 3, 2021

-2

561

0

+16

help!

The mean weight of baby deer at a local zoo is 15.8 lbs., with a standard deviation of 2.4 lbs. A researcher records the weight of the following five baby deer. 14.5 lbs., 16.8 lbs., 15 lbs., 16.4 lbs., and 15.9 lbs. SHOW ALL WORK!

A) read more ..

luckystar042003 May 3, 2021

May 2, 2021

0

439

1

3d geometry

A circle has a radius of 25. A circular sector, with an angle of 320 degrees at the center, is cut from the circle, and then rolled to form a cone. Find the volume of the cone.

Guest May 2, 2021

0

582

2

Please Help!

Find all complex numbers such that
Note: All solutions should be expressed in the form , where and are real numbers.

Guest May 2, 2021

0

344

1

geometry

Let Y, X, and W be three consecutive vertices of a regular 18-gon. A regular heptagon is constructed on Line XY, with a vertex Z next to X. Find angle YXW, in degrees.

Guest May 2, 2021

+1

657

2

probability

I roll a die and flip three coins at the same time, and repeat this multiple times. What is the probability that I flip three heads twice in a row before I roll a 6?

Guest May 2, 2021

+2

597

1

+256

Vieta's Formula

Given the equation ((m^2)-1)(x^2)-2mx+m+1=0 has two roots x1 and x2, calculate x1^3 - x2^3. Simplify.

BWStar May 2, 2021

0

374

1

polygons

Suppose regular polygon has an exterior angle that measures 18 degrees. How many sides does this polygon have?

Guest May 2, 2021

0

374

1

triples

Find the number of triples (a, b, c) of positive integers, such that 1 <= a, b, c <= 100 and a^2 + b^2 + c^2 = ab + ac + 4bc.

Guest May 2, 2021

0

559

2

Two trains leave towns

Two trains leave towns
1130 kilometers apart at the same time and travel toward each other. One train travels
22 kmh faster than the other. If they meet in 5 hours, what is the rate of each train?

Guest May 2, 2021

0

460

1

Isosceles triangles

How many isosceles triangles with whole-number length sides have a perimeter of 30 units?

Guest May 2, 2021

0

384

1

trapezoid

The area of the trapezoid ABCD is equal to 60. The length of one of of the bases is 7 units greater than the other base, and the height of trapezoid ABCD is equal to 6. What is the legth of the median of trapezoid ABCD

Guest May 2, 2021

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