All Questions ⁺⁰238122 Questions

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389

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necesito ayuda

Guest Nov 4, 2020

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609

2

Let A, B, C be points on circle O such that AB is a diameter

Let A, B, C be points on circle O such that AB is a diameter, and CO is perpendicular to AB. Let P be a point on OA, and let line CP intersect the circle again at Q. If OP = 20 and PQ = 8, find r^2, where r is the radius of the read more ..

Guest Nov 4, 2020

+1

494

1

+5

Basic Pi - HELP!!

If a circle has a radius of 5 meters, what is the circumference?

If a circle has a diameter of 17 inches, what is the circumference?
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DM374 Nov 4, 2020

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1044

1

Circle O is tangent to AB at A, and angle ABD = 90 degrees

Circle O is tangent to AB at A, and angle ABD = 90 degrees. If AB = 12 and CD = 28, find the radius of the circle.

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Guest Nov 4, 2020

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583

1

chemistry moles to grams

How many grams of iron(III) chloride will form when 5.5 moles of iron react with chlorine gas in this synthesis reaction? 2Fe + 3Cl2 --> 2FeCl3

Guest Nov 4, 2020

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529

2

I need help

Guest Nov 4, 2020

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563

2

find the area of the circle

If AB = 3, AC = 9 and BS = 22, find the area of the circle.

Guest Nov 4, 2020

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761

2

+179

Can you help me understand what to do next?

Let G be the center of equilateral triangle XYZ. A dilation centered at G with a scale factor is applied to triangle XYZ, to obtain triangle X'Y'Z'. Let A be the area of the region that is contained in both triangles XYZ and X'Y'Z'. Find . read more ..

xCorrosive Nov 4, 2020

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637

2

Point Y is on a circle and point P lies outside the circle

Point Y is on a circle and point P lies outside the circle such that PY is tangent to the circle. Point A is on the circle such that segment PA meets the circle again at point B. If PA = 15 and PY = 10, then what is AB?
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Guest Nov 4, 2020

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659

1

Nine stones are arranged in a straight line. They are counted from left to right as , and then from right to left, so that the stone previou

Nine stones are arranged in a straight line. They are counted from left to right as , and then from right to left, so that the stone previously counted as 8 is counted as 10. The pattern is continued to the left until the stone previously counted read more ..

Guest Nov 4, 2020

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882

5

An ant is walking on a hexagon. At each step, he moves from the vertex on which he is standing to an adjacent vertex.

An ant is walking on a hexagon. At each step, he moves from the vertex on which he is standing to an adjacent vertex. After 6 steps, what is the probability that he is standing on the same vertex on which he began?

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Guest Nov 4, 2020

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668

1

$x^2+px+q=0$ has one negative solution and one positive solution. Which of following statements must be true?

$x^2+px+q=0$ has one negative solution and one positive solution. Which of following statements must be true?

(A) $p$ must be positive.
(B) $p$ must be negative. read more ..

Guest Nov 4, 2020

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825

1

Given x^2-3x-1=0, what is 1/x-x ?

Given $x^2-3x-1=0,$ what is $\dfrac{1}{x}-x ?$

(please no decimal answers)
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Guest Nov 4, 2020

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385

0

Find the smallest distance between the origin and a point on the parabola

The smallest distance between the origin and a point on the parabola y = x^2 - 2.

Guest Nov 4, 2020

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624

3

Gram to Mole - Stoichiometry

When 0.325 moles of iron metal react copper(II) chloride solution to produce copper metal and iron(III) chloride. How many grams of copper will be produced? 2Fe + 3CuCl2--> 3Cu + 2FeCl3

How read more ..

Guest Nov 4, 2020

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405

1

Scientific Notation

the pygmy shrew is the world's smallest mammal by weight. it weighs just 0.0013 kilograms how much would 3,000,000 pygmy shrew weigh? use scientific notation to calculate the weight.

Guest Nov 4, 2020

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553

1

What is the equation of a line that passes through the point (10, 5)

What is the equation of a line that passes through the point (10, 5) and is perpendicular to the line whose equation is y=7/4*x−2 ?

Guest Nov 4, 2020

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536

1

help please

Guest Nov 4, 2020

0

512

1

Let be the sum of a finite geometric series

Let S be the sum of a finite geometric series with negative common ratio whose first and last terms are 1 and 9, respectively. (For example, one such series is 1 - 3 + 9, whose sum is 7.) There is a real number L such that S must be greater than L, but read more ..

Guest Nov 4, 2020

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