10/25/15

Pythagorean Theorem Word Problem
I got confused on how to complete word problems involving the Pythagorean Theorem. I understand how to do it when it is not in word problem form, but this one confused me. Please review the problem... more
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10/25/15

a crew at an auto parts store can unloaded a shipment of 616 cases of fan belts in 4 hours.
a crew at an auto parts store can unloaded a shipment of 616 cases of fan belts in 4 hours. how many cases can they unload in 4 hours?
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10/25/15

need Math help
A grocer purchases 200 apples. find the standard deviation of bad apples assuming 5% are bad. (round two decimals)
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10/25/15

Find two numbers that differ by 10 and have a product that is a minimum
Must be at least two numbers  
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10/24/15

Total-Value Problems and Mixture Problems
Oh Nuts! Sells pistachio kernels for $10 per pound and almosnds for $8 per pound.  How much of each type should be used to make a 50-pound mixture that sells for $8 per pound.
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10/24/15

A local BBQ restaurants offers 2 side dishes with a lunch plate.There are 7 side dishes.How many choices of side dishes does a customer have? Can repeat.
Discrete math question about combinations  
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10/24/15

square root
how to do big numbers square root?
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10/22/15

what is the rate change in -8x-4y=10-2x+6y
Confused. Help needed.    -8x-4y=10-2x+6y
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10/21/15

How do I simplify in the binomial therom
x2 + 3)6 = 6C0 (x2)6(3)0 + 6C1 (x2)5(3)1 + 6C2 (x2)4(3)2 + 6C3 (x2)3(3)3+ 6C4 (x2)2(3)4 + 6C5 (x2)1(3)5 + 6C6 (x2)0(3)6   
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10/21/15

a group of 200000 people are surveyed from all over the world then what is the expected number of green eyed people in the sample?
When looking at a person’s eye color, it turns out that 1% of people in the world has green eyes ("What percentage of," 2013). Consider a group of 200000 people are surveyed from all over the world... more
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10/20/15

What is the probability that the program selects 5 as the first number and 7 as the second number?
You created a computer program that randomly selected a number from 1 to 20. You run the program two times.
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10/20/15

A train travels 20 feet in 1/5 seconds. At this same speed, how many feet will travel in three seconds?
A train travels 20 feet in 1/5 seconds. At this same speed, how many feet will travel in three seconds?
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10/20/15

14 government officials, 4 of them spies. A diplomat gives information to 10 at random, what is the probability that no secret information was given to spies?
A meeting takes place between a diplomat and fourteen government officials. However four of the officials are actually spies. If the diplomat gives secret information to ten of the attendees at... more
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10/18/15

find three consecutive integers such that the product of -5 and the sum of the first two is 43 less than twice the second
need help understand how to do problems such as this one
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10/09/15

How is it that sec(pi/4)=sqrt(2) when sec(pi/4)=1/cos(pi/4)=1/sqrt(2)/2=2/sqrt(2)?
The x-coordinate or cosine for 45º or π/4 on a unit circle is sqrt(2)/2.
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10/08/15

Stat probability help!
Suppose we roll an ordinary balanced six-sided die Let A = {1,2}, B = {2, 5}, C = {2, 4, 6} What is P(A ∩ B ∩ C)
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10/06/15

Two dice are rolled [probability]
A) Find the probability that the first number is 3 given that the sum is 7.   B) Find the probability that the first number is 3 given that the sum is 8.   I'm not understanding how the answers... more
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10/04/15

domain of 6x^2-3x/x^2-x-42
how do i get the domain of them f/g  
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10/04/15

A bus travels from El Paso, Texas, to an area near Chihuahua,in 5.3 h with an average velocity of 74 km/h to the south. What is the bus’s displacement?
This problem is extremely difficult for me to understand . Help is well needed.
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10/04/15

direction needed to head to cross river, and how long will it take.
Vanessa is on one side of the river at camp and wants to go straight across to the island. The current flows to the vest and has a speed of 3 km/h. she can paddle the canoe with a speed of 5 km/h... more
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10/04/15

ANSWER NEEDED PLEASE
Assume that women's heights are normally distributed with a mean given by μ=63.6 in, and a standard deviation given by σ=1.9 in. (a) If 1 woman is randomly selected, find the probability that her... more
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10/04/15

I am Stuck on these problems
The following formula describes the recent profit, P, in thousands of dollars, for a company that just implemented a new marketing campaign. The variable, t, is time, in weeks, after the campaign... more
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10/03/15

For a normal distribution curve with a mean of 17 and a standard deviation of 3, which range of the variable defines an area under the curve corresponding to a
For a normal distribution curve with a mean of 17 and a standard deviation of 3, which range of the variable defines an area under the curve corresponding to a probability of approximately 68%?
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10/03/15

test prep, question on average rate of return for BET from a table of annual returns
I am in a graduate level finance class, trying to do some test study questions and the formulas for this aren't even in the book and I can't figure out how to go about solving this. I can't even... more
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10/03/15

emerpical rule
Suppose that the mean height of 10th grade boys is 69 inches with a standard deviation of 2 inches and that it follows a normal distribution. Using the empirical rule, determine the percentage of... more
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