06/24/15

Word problem, Math, Matrix unit
"In a football game, Team A defeated Team B by a score of 28 to 10. The total points scored came from a combination of touchdowns, extra-point kicks, and field goals, worth 6, 1, and 3 points,... more
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06/24/15

how do I do a chi square test when I am not give the alpha?
A coffeehouse wishes to see if customers have any preference among 5 different brands of coffee. A sample of 200 customers provided the data below. Calculate the chi-square test statistic χ2 to... more
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06/23/15

For how many integers n is 3 < 5n-1 < 13?
I got 4/5 < n < 14/5, but the answer choices only have from one to five. I am confused, please help.   Thank you.
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06/23/15

Limits multivariable Problem?????
I am not really sure how to solve this problem...   Evaluate the Limit:   Limit  (x,y,z) ----> (0,0,0)            (x2+y2+z2)/(x2-y2-z2)    
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06/18/15

Need help setting up the question.
Allison replaced 100 watt fixture with 15 watt fixture.  She estimated that fixture will burn 2000 h per year and that the annual savings will be $20.400 what is the cost of her electricity per kwh? 
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06/17/15

Find two numbers whose sum is 55 and whose product is 684
Need help setting up the equation it self.
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06/16/15

What is the smallest sample size n that would be needed to give p hat within 3 percentage points of the true population proportion if p=40
δp= √pq/n
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06/16/15

explain how (y^4)/(1+(y^2)) simplifies to ((y^2) -1 + (1/(1+(y^2))
can't visualise how to simplify this for part of an integration problem
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06/13/15

Rate of Change from June and September
From April through December 2012, the stock price of QRS Company had a roller coaster ride. The chart below indicates the price of the stock at the beginning of each month during that period. Find... more
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06/11/15

juice glasses
Six glasses are in a row. The first three are full of juice; the second three are empty. By moving only one glass, can you arrange them so empty and full glasses alternate?
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06/09/15

math brain power Please clarify why my answer would be incorrect. Thank you.
''Plane" Numbers:  Replace the letters below with numbers so that the addition will be numerically correct.                K=9                                         M O M        THE CORRECT... more
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06/07/15

Identify which value represents the sample mean and which value represents the claimed population mean
A recent article in a college newspaper stated that college students get an average of 5.5 hrs of sleep each night. A student who was skeptical about this value decided to conduct a survey by... more
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05/27/15

If a single fair die is rolled, find the probability. An even number, given that the number rolled was 6
If a single fair die is rolled, find the probability. An even number, given that the number rolled was 6
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05/25/15

How many different ways can Joe eat the candy
Joe is eating colored candy and he has 5 orange candies and 5 yellow candies left. how many different ways (color patterns) can joe eat the candy?
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05/21/15

Evaluate e^1/2 to one decimal place
How do you solve this
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05/21/15

Chris says that about 14.6 of the world's oranges are grown in Florida, Mary says that 292 out of every 2000 oranges are grown in Florida. Who is correct?
I need help with this question  
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05/21/15

trinity enlarged her favorite 3inch by 5inch photo to a size that was 3 times its original size. what is the area, in square inches, of the enlarged photograph?
I'm checking my daughter's homework and I'm trying to figure out if I'm wrong or is she wrong. She multiplied 3*3*3. According to the problem i entered wouldn't it be 3*3=9, 5*3=15. Then... more
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05/21/15

Vector help, please!
I feel like the answer is right in front of me. I just keep arriving at the same solution which is apparently the wrong one. Could someone guide me to an easier way of approaching this problem that... more
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05/19/15

You have to pick a pizza with 1 crust, 3 toppings and 1 cheese. You have 3 crust options, 7 topping options and 3 cheese options. How many choices do I have?
You have to pick a pizza with 1 crust, 3 toppings and 1 cheese.   You have 3 crust options, 7 topping options and 3 cheese options. How many combinations options do I have?
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05/19/15

A runner travels 800 meters ( 2 full laps ) in 80 seconds, what is the runner's displacement
I have a science exam and do not understand this question. Please help
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05/18/15

Barbara can swim at 4km/h in still water.
She wishes to swim across a river to a point directly opposite from where she is standing.?The river is moving at a rate of 5km/h. Explain, with the use of a diagram, why this is not possible.Isn't... more
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05/18/15

the fish tank shown is filled to height of 15 inches. what is the volume of water in the tank?
18in.multiply by 22in. multiply by 34in. 13464 is the answer the value is 13464.  
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05/14/15

The prob. that Candela will score above 90 on a test is 4/5.
What s the prob. that shell score above 90 3 out of 4 tets this quarter?
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05/14/15

help????????
You draw 3 cards from a standard deck of 52 playing cards. What is the probability that you get at least 2 face cards?
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05/13/15

6 friends go out for dinner and order from a menu of 8 different sandwiches. What is the probability that at least 2 of the group order the same sandwich?
Factorials
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