Raymond B.

04/02/15

Statistics problem about tossing a coin

An experiment consists of first rolling a die and then tossing a coin.a. List the sample space.b. Let A be the event that either a three or a four is rolled first, followed by landing a head on the... more

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Geometry

04/01/15

finding midpoint

Did I solve this correctly: E 2x __________________________________________________ A ... more

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Algebra

04/01/15

let a1 , a2 , a3, a4, a5 be the roots of equation x^5 + x^3 + x^2 + 2x + 3 = 0, then choose the correct options :

options : (a) ∑ai^2 [i = 1 to 5] = -2 (b) ∑ai^3 [i = 1 to 5] = -3 (c) ∑ai^4 [i = 1 to 5] = -6 (d) ∑ai^5 [i = 1 to 5] = -4

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Pentagon Ratio

03/31/15

Finding ratios of a pentagon ( diagonal to side)

Given a regular pentagon, find the ratio of the diagonal, d, to its side, a.

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Statistics Question

03/31/15

Chebychevs theorm

For sample of people playing a certain carnival game it took an average of 15 throws to score a basket the standard deviation is . At least what percentage of people score a basket in 11 to 19... more

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Other

03/31/15

find sin(x/2) if tanx=4/3 and pi<x<(3pi/2)

this is a math problem im stuck on...

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Sum Term Arithmetic Sequence

03/30/15

What is the sum of a 34-term arithmetic sequence where the first term is 14 and the last term is 146?

What is the sum of a 34-term arithmetic sequence where the first term is 14 and the last term is 146?Choose one answer.A. 2,550 B. 2,720 C. 2,890 D. 2,982

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Precalculus

03/30/15

The half-life of cesium-137 is 30 years. Suppose we have a 15-g sample.

The half-life of cesium-137 is 30 years. Suppose we have a 15-g sample. Find a function m(t) = m02−t/h that models the mass remaining after t years. m(t) = Find a function m(t) =... more

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Precalculus

03/30/15

This exercise uses the radioactive decay model. The burial cloth of an Egyptian mummy is estimated to contain 60% of the carbon-14 it contained originally.

How long ago was the mummy buried? (The half-life of carbon-14 is 5730 years. Round your answer to the nearest ten years.

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Probability Fractions Decimals

03/30/15

(1) What is Pr[E | F]? (2) What is Pr[F | E]?

Suppose for this problem that Pr[E] = [ 1/12], Pr[F] = [ 1/6], and Pr[E ∩F′] = [ 0/1].(1) What is Pr[E | F]? (2) What is Pr[F | E]?

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Midpoint

03/30/15

If point D is at -2, what are all possible midpoints for line EF?

Point D is 8 units always from point E. Point D is also 10 units away from Point F.

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Statistic

03/30/15

Help with statistics

1. Determine which of the four levels of measurement (nominal, ordinal, interval, or ratio) is most appropriate.a. Amount of fat (in grams) in cookies.b. Temperatures of ocean at various depths.

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Triangle Interior Angle Sums

03/29/15

the longest side of the triangle lies opposite which interior angle of an acute and obtuse triangle?

Foe math homework I had to draw an acute and obtuse triangle and measure each interior angle and label I'm not sure how to do this thought can you please give me an example?

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Math Help

03/29/15

math problem

State the domain and range of the function and sketch its graph: s(x)= x^2-2x+1/x^3-3x^2

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Math Help

03/29/15

math problem

Find any x and y-intercepts. Also, list all vertical and horizontal asymptotes: r(x)=x-1/x+4

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Algebra

03/28/15

Find (g°k)(1)for g(x)=5x2+6x-4and k(x)=6x2+x-5. (g°k)(1)=

Find (g°k)(1)for g(x)=5x^2+6x−4and k(x)=6x^2+x−5. (g°k)(1)=

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Probability Combinations Sets

03/27/15

Assume that Pr[A] = 0.4, Pr[B] = 0.7, and Pr[A nB] = 0.3.

events A and B in a sample space S. Assume that Pr[A] = 0.4, Pr[B] = 0.7, and Pr[A ∩B] = 0.3.(1) Pr[B′∩A] = (2) Pr[A′∩B] = (3) Pr[A′∩B′] =

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Probability Combinations Sets

03/27/15

Find the following probabilities

involving events E, F, and G in a sample space S. Assume that Pr[E] = 0.45, Pr[F] = 0.3, Pr[G] = 0.5, Pr[E∩F] = 0.15, Pr[E∩G] = 0.25, Pr[F∩G] = 0.1, and Pr[E∩F ∩G] = 0.05;. Find the following... more

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Conics

03/26/15

Find the vertex, focus, and directix of this parabola. Graph the equation. y^2 - 4y + 4x + 4 = 0

Find the vertex, focus, and directix of this parabola. y^2 - 4y + 4x + 4 = 0 Vertex( , )Focus( , )Directix = please help!!!

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Conics

03/26/15

Find the vertex, focus, and directix of this parabola. Graph the equation. x^2 = 4y

Find the vertex, focus, and directix of this parabola. Graph the equation.x^2 = 4y Vertex( , )Focus( , )Directix =

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Conics

03/26/15

Find the vertex, focus, and directix of this parabola. Graph the equation. (y + 3)2 = 8(x - 2)

Find the vertex, focus, and directix of this parabola. Graph the equation. (y + 3)2 = 8(x - 2) Vertex( , )Focus( , )Directix = please help!!!

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Terms Sum Arithmetic Sequence

03/26/15

What is the sum of the arithmetic sequence 140, 134, 128..., if there are 33 terms?

What is the sum of the arithmetic sequence 140, 134, 128..., if there are 33 terms?Choose one answer. A. 1,364 B. 1,408 C. 1,452 D. 1,496

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Terms Sum Arithmetic Sequence

03/26/15

What is the sum of the arithmetic sequence 3, 11, 19 ..., if there are 26 terms?

What is the sum of the arithmetic sequence 3, 11, 19 ..., if there are 26 terms?Choose one answer. A. 1,222 B. 1,261 C. 2,486 D. 2,678

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Probability

03/25/15

probability qestion

in class we showed that if 1/1000 people have a disease and the probability that a test for disease gives the correct result 95% of the time then the probability that a randomly selected person has... more

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Math Inverse Math Help For College

03/25/15

Find the inverse, if possible

C=[1 0 0] [-2 1 0] [3 0 2] 1st row=? 2nd row=? 3rd row=?

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Statistics problem about tossing a coin

finding midpoint

let a1 , a2 , a3, a4, a5 be the roots of equation x^5 + x^3 + x^2 + 2x + 3 = 0, then choose the correct options :

Finding ratios of a pentagon ( diagonal to side)

Chebychevs theorm

find sin(x/2) if tanx=4/3 and pi<x<(3pi/2)

What is the sum of a 34-term arithmetic sequence where the first term is 14 and the last term is 146?

The half-life of cesium-137 is 30 years. Suppose we have a 15-g sample.

This exercise uses the radioactive decay model. The burial cloth of an Egyptian mummy is estimated to contain 60% of the carbon-14 it contained originally.

(1) What is Pr[E | F]? (2) What is Pr[F | E]?

If point D is at -2, what are all possible midpoints for line EF?

Help with statistics

the longest side of the triangle lies opposite which interior angle of an acute and obtuse triangle?

math problem

math problem

Find (g°k)(1)for g(x)=5x2+6x-4and k(x)=6x2+x-5. (g°k)(1)=

Assume that Pr[A] = 0.4, Pr[B] = 0.7, and Pr[A nB] = 0.3.

Find the following probabilities

Find the vertex, focus, and directix of this parabola. Graph the equation. y^2 - 4y + 4x + 4 = 0

Find the vertex, focus, and directix of this parabola. Graph the equation. x^2 = 4y

Find the vertex, focus, and directix of this parabola. Graph the equation. (y + 3)2 = 8(x - 2)

What is the sum of the arithmetic sequence 140, 134, 128..., if there are 33 terms?

What is the sum of the arithmetic sequence 3, 11, 19 ..., if there are 26 terms?

probability qestion

Find the inverse, if possible

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