All Questions ⁺⁰237643 Questions

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Γ is a circle with center O. AOB is a circular sector of Γ with ∠AOB=50∘. C is a point on minor arc AB such that ∠AOC=20∘. What is the measure (in degrees) of ∠ACB?

Guest Dec 23, 2019

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779

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Help pls

Lance has a regular heptagon (7-sided figure). How many distinct ways can he label the vertices of the heptagon with the letters in OCTAGON if the N cannot be next to an O ? Rotations of the same labeling are considered equivalent.
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Guest Dec 23, 2019

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787

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Need help asap

Hi, I need help with this, I can't figure it out.

Guest Dec 23, 2019

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747

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geometry

A half-circle is inscribed within an equilateral triangle such that the diameter of the half-circle is centered on one edge of the triangle and the arc is tangent to the other two sides. What is the diameter of the semi-circle if the triangle has an edge read more ..

Guest Dec 23, 2019

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811

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Geometry help

Suppose we take a unit square and divide each side into equal parts. We then connect each vertex to the point closest to the opposite vertex as seen in this figure:
If the area of the small square in the middle is , find . read more ..

EpicWater Dec 23, 2019

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1370

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Help quick. A VERY thorough explanation would be nice. Thank you!!!

Prove that if are complex numbers such that and , then is a real number.

EpicWater Dec 23, 2019

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526

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help

Let a, b, and c be constants, and suppose that the inequality ((x-a)(x-b))/(x-c) <= 0 is true if and only if either x < -4 or |x-25| <= 1. Given that a < b, find the value of a + 2b + 3c.

<= read more ..

Guest Dec 23, 2019

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424

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geometry help

An equilateral triangle of side length 200 is shown below. Three circular arcs are constructed on each side such that each arc passes through the two vertices of the side and such that it is tangent to the two other sides. The three arcs are also shown read more ..

Guest Dec 23, 2019

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729

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help

Given the circle center at O, OT ias perpendicular to PT, If arcNBT is a semi circle and minor arcNB is 60 degrees what is angle APT?

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Guest Dec 23, 2019

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781

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help needed

The arithmetic mean of two positive integers exceeds their geometric mean by 50. By how much does the square root of the larger of the two numbers exceed the square root of the smaller?

Guest Dec 23, 2019

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2117

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i don't understand...

I want to take a picture of my six friends standing in two horizontal rows of three. How many different photos can I take if the tallest person must stand in the back row, the shortest person must stand in the front row, and two of my friends are identical read more ..

Guest Dec 23, 2019

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769

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ANALYTIC GEOMETRY II

Let A = (10, -10) and O = (0, 0). Determine the sum of all x and y-coordinates of all points Q on the line y= - x + 6 such that angle OQA = 90 degrees.

mathleteig Dec 23, 2019

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1188

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+296

Complex numbers: Precalc

Find all real numbers so that the product is pure imaginary. Enter all the solutions, separated by commas.

EpicWater Dec 23, 2019

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664

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please help. i dont understand this...

please help. i dont understand this...

Guest Dec 23, 2019

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468

1

Help

In trapezoid ABCD, AB || CD. Let P be the midpoint of AD. If the area of triangle APB is 5, and the area of triangle CDP is 17,then find the area of trapezoid ABCD.

Guest Dec 23, 2019

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798

2

Help please

Let z and w be complex numbers satisfying |z| = 4 and |w| = 2. Find .
Let z and w be complex numbers satisfying |z| = 5, |w| = 2, and Find .

Guest Dec 23, 2019

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529

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help

In isosceles triangle ABC, E is the midpoint of base BC. Points F and G are on line segments AB and AC, respectively, and EFG is an equilateral triangle. If BC = 6 and AB = 5, then find FG.

Guest Dec 23, 2019

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738

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help

Determine the sum of all 24 distinct 4 digit numbers formed by 2 3 7 9

Guest Dec 23, 2019

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3097

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help

Steve has one quarter, two nickels and three pennies. Assuming no items are free, for how many different-priced items could Steve individually pay for with exact change?

Guest Dec 23, 2019

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415

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help

Guest Dec 23, 2019

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765

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+1

PLEASE HELP I NEED TO PASS THIS CLASS TO GRADUATE

Points A(-3, -3) B(-2, 2) C (3, 3), and D(2, -2) are the vertices of a quadrilateral
A- use the distance formula to determine the length of each side of the quadrilateral. Show your work
B- explain whether the quadrilateral is a rhombus read more ..

hm84014 Dec 23, 2019

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783

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help

Find all pairs of positive integers (a,b) that satisfy a^3 - b^3 = 721.

Guest Dec 23, 2019

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447

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help

O denotes the centre of the circle. Find x.

Guest Dec 23, 2019

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