12/12/16

inverse of f(x)= (x-1)/(x+1)
Finding inverse function  of f(x)=(x-1)/(x+1)
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12/12/16

The number of bacteria in a culture grows at an exponential growth rate of 139% per hour what is the doubling time for these bacteria
need immediately 
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12/12/16

find the standard deviation
SS = 120 and score or (n) is 30. how do I compute the standard deviation with no individual scores. Variance is 4.14
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12/12/16

Math Help!!
An open barrel is to have a protective metal rim around the top. The top of the barrel has a diameter of 6.5 inches. What is the length of metal needed to form the strip?
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12/12/16

why is absolute value always positive but the number is negitive?
like if it looks like this [-634]
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12/12/16

If it takes Cynthia 6 hours to read a book and Mandy 7 hours to read a book how long would it take if they read worked together
it takes cynthia 6 hours to proof a chapter of hawkes learning systems introductory algebra books and it takes mandy 7 hours how long would it take them working together
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12/12/16

geometric sequence of 3,6,12,24,48
 geometric sequence
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12/12/16

Let's say you have your email has a set total of 315 total messages how many subsets can you possibly create
This is a set theory problem my teacher say its easier than I think but I don't understand. 
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12/11/16

What numbers multiply to equal .042
The question is: What two numbers multiplied equals.042? The answer from those two numbers has to equal .16.  Example: What two numbers when multiplied equals 42 and when those two numbers are... more
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12/11/16

The sum of two consecutive numbers is 69. Find the numbers
The sum of two consecutive numbers is 69. Find the numbers  
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12/11/16

Finding length and width with a word problem.
The length of a rectangle is 5 yd more than double the width. And the area of the rectangle is 42 yd ^2 . what are the dementions
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12/11/16

how far would it be from eds house to the store if there were a direct route?
to get to the store, ed leaves his house and drives 8 miles south. he then turns east and drives 5 more miles. At this point, he has to turn due south and drive another 4 miles. how far would it be... more
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12/11/16

terry rented 6 movies 2 video games for a total of 36.00 next month rented 3 movies and 5 video games for 39.00 find the rental cost each game and moviep
Help please 
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12/11/16

Linear Inequalities
Avery High School honds a walk-a-thon each fall to raise money for charity. This year they want to raise at least $375. Each student earns $0.75 for every half mile walked. How many miles will the... more
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12/11/16

Systems of equations
I bought some dogs and octopi.  Each dog costs $100 and each octopus cost $200. I paid a total of $2000 and got a total of 80 legs.  How many of each did I get?   Please show work 
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12/11/16

probability
I don't know how to solve this    The average weight of a nickel is 5 grams, with a standard deviation of 0.1 grams. What is the probability of opening a roll of 20 nickels and finding the... more
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12/11/16

A doorway is 2.0m high and 1.0m Wide. A square piece of plywood has side length 2.2m. Can it fit through
I been trying to get this but can't. Plz solve in numbers the sentence 
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12/11/16

the line perpendicular to y=7 ,passing through the point (-2,5)
how do I solve
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12/11/16

What is the slope of the line that passes through the points (-2,5) and (1,4)?
What is the slope of the line that passes through the points (-2,5) and (1,4)?
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12/11/16

I need help.
The sum of a number times 6 and 9 is equal to 4.   Use the variable y for the unknown number.
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12/11/16

Let f(x) = 8x + 7 and g(x) = 9x − 8. Find the function. f/g
Let f(x) = 8x + 7 and g(x) = 9x − 8. Find the function.f/g
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12/10/16

simplify....
Simplify .... log(M/N)
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12/10/16

growth....
How much would a person have to invest at 4.5% compounded continuously to have $10,000 fiveyears from today?
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12/10/16

A piece of string with a length of n cm is cut into 2 pieces. One of the pieces will be used to make a square, while the other piece will be used to...
A piece of string with a length of n cm is cut into 2 pieces. One of the pieces will be used to make a square, while the other piece will be used to make an equilateral triangle. How should the... more
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12/10/16

Exponential
The balance of a bank account after t years is given by the formula B=9000e^.074t. If the formula B is written B=9000b^t, find b exactly, and give the value of b correct to four decimal places.
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