09/21/16

On the overlap of two events.

Suppose for events A and B, P(A) = 1/2, P(B) = 2/3, but we have no more information aboutthe events.(a) What are the maximum and minimum possible values for P(A U B)?(b) What are the maximum and... more

Consumer survey conducted to examine patterns in ownership of tablet computers, cellular telephones, and blue ray players

a consumer survey was conducted to examine patterns in ownership of tablet computers, cellular telephones,  and blue ray players. The following data was obtained: 311 people had tablet computers,... more

03/16/15

Find the missing side length, in terms of x

A triangle has a perimeter of 23a2--7a. Two of the side lengths are 6a+8a2 and 8a2-9a. 

03/16/15

How many times did he go on each ride?

Corion goes to the carnival. He goes in his favorite ride the Ferris wheel (4 tickets each ride) and the dizzy cups (3 tickets each ride). He uses 30 tickets and goes on the ferris wheel 4 times... more

03/16/15

How many liters of solution will she require?

Ms. Ian is measuring out a solution for chemistry. Each lab will require 50 millimeters (mL) for their experiment. If Ms. Ibrahim has 4 classes with 6 groups in each class, how many liters of... more

Ratical and Rational Equations

(4/X^2+X-6)-(1/X^2-4)=(2/X^2+5X+6)   Please help me solve

03/16/15

At 9:45 am Margie threw a ball upwards while standing on a platform 75 ft off the ground. The trajectory after t seconds follows the equation

At 9:45 am Margie threw a ball upwards while standing on a platform 75 ft off the ground. The trajectory after t seconds follows the equation : h(t)=-0.4t^2+96t+75 a) What will be the maximum... more

03/15/15

The Poe family bought a house for $240,000. If the value of the house increases at a rate of 4% per year, about how much will the house be worth in 20 years?

Its a very hard question to answer. I need help my parents are all gone to work and I need a little help. It's dealing with Exponential Growth and Decay. 

Mutually exclusive events

Let A and B be two mutually exclusive events. The P(A)=.4 and the P(B)=.2  Compute all of the following   a) P(A intersection B) b) P(Ac) c) P(A U B) d) P(Bc) e) P(Ac intersection Bc)

03/15/15

solve for thata in the interval 0 to 360

3 tan2 theta - 1 = 8

03/14/15

Rent or Own?

When considering the pros and cons of renting versus purchasing a home, one of the angles to consider would be to contrast the rent with the actual mortgage payments. For the problem below,... more

Is this parameter or statistic?

Average commute time for employees at a small company, based on interviews with all employees.

what is the probability of a man over 50 showing no signs of heart disease, given that he smokes?

In a research study concerning the relatioship between smoking and heart disease in men over 50, it was found that 20% of the men smoked and had showed no signs of heart disease. Futhermore, it was... more

How do you solve: 7x^2 minus radical13x minus3 =0

How do you solve:   7x² -√13x -3=0

01/29/15

How many people attended the party?

A scientist wants to research the potential spread of germs by contact. She knows that the number of possible handshakes within a group of n people is given by the equation H=(1/2)(n^2-n). Everyone... more

Find a and b (given a binomial of x, a and b and a coefficient of a term)

 In the expansion of (x+a)^3(x-b)^6, the coefficient of x^7 is -9 and there is no x^8 term. Find a and b.

01/28/15

Word problem involving a couple variables.

Brad and angelina can mow their yard together with two mowers in 45 min. when brad works alone it takes him 1hr 10min. How long would it take angelina to mow the lawn by herself

01/28/15

Pineapple is 7 times as heavy as an orange. Pineapple weighs 870 grams more than orange. How much do each weigh?

how much do each weigh in grams and in kilograms

01/26/15

Probability Problem #4

Which expression can you use to calculate the conditional probability of event A given that event B has occurred?   Answers- A: P(A)+P(B)- P(A and B) B: P(B)*P(A l B) C: P(A and B)/P(B) D:... more

01/21/15

A bag contains 4 blue marbles and 4 red marbles

A bag contains 4 blue marbles and 4 red marbles. You choose a marble without looking, put it aside, and then choose another marble. Is there a greater than or less than 50% chance that you choose... more

How long would it take two vacuum cleaners to clean if they are operated simultaneously?

It takes 3 hours for vacuum cleaner A to clean a cinema theater. A more efficient vacuum cleaner B would clean the cinema theater in 0.5 hours. How long would it take if the two vacuum cleaners are... more

09/24/14

for any positive integer m; 3v(-m) 3 is a) - m b) m c) (- m) 3 d) v(-m).

for any positive integer m; 3√(-m) 3 is a) - m b) m c) (- m) 3 d) √(-m).

An autoclaves and sterilizers manufacturer has estimated the manufacturing costs of its new product as follows:

An autoclaves and sterilizers manufacturer has estimated the manufacturing costs of its new product as follows: Cost Elements Cost Rate Direct labor $20 per hour Material $270 per unit Overhead... more

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