06/23/15

Marcus Drives from Chicago to Detroit in 6 hours. On the return trip his speed is increased by 10mph and the trip takes 5 hours. Find his rate on the return tri
How do I go about sloving this problen
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06/23/15

Find the domain, the range, and describe the level curves for the function???
Find the domain, the range, and describe the level curves for the function   f(x,y) = 1 - e^(-4x2 -9y2)   I figure out that the domain is all real numbers The level curve I believe  is... more
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06/19/15

If f(x) = x 2 + 1 and g(x) = 3x + 1, find 2·f(4).
I have narrowed it down to either 18, 34, or 65. I can not determine which one though.
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06/19/15

find the time required for an investment of 12000 to grow to 19000 at an annual interest rate of 5 % yearly
find the time required for an investment of 12000 to grow to 19000 at an annual interest rate of 5 % yearly
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06/19/15

how many years does a person spend sleeping and watching tv
according to statistics, a person will devote 37 years to sleeping and watching TV. The number of years sleeping will exceed the number of years watching tv by 19. Over the lifetime, how many years... more
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06/19/15

I need a formula to code my microprocessor to tell me how fast my model train is going in MPH
Thank you for helping me with this. I am not very good with long algebra problems. It must be my "ADD". I am a 63 year old experimenter and I experiment with just about everything; engineering,... more
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06/14/15

A 23ft by 47 ft rectangular pool is surrounded by a walkway of uniform width. If the total area of the walkway is 624 feet squared, how wide is the walkway?
algebra word problem. i just can't understand how to solve this! 
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06/14/15

If y = (sin t)^5t , find dy/dx.
If y = (sin t)^5t , find dy/dx.
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05/10/15

PLEASEE Helppp need answer
Let t represent the time in seconds a ball is in the air and h(t) represents the balls height in feet above the ground. Then it's height can be modeled by the equation: h(t)= -16t^2+50t+5 a) what... more
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05/10/15

If f(x)= arctan x, g(x)=0.9x, and x is in radians, for how many values of x does f(x)=g(x)?
Given that arctan x= 0.9x how do you get an inverse tan of a variable that would give a result of 0.9 times the variable?
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05/09/15

word problem
serial numbers for a product are to be made using 4 letters followed by 4 numbers. if the letters are to be taken from the first 9 letters of the alphabet with no repeats and the numbers are taken... more
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05/09/15

cot(tetha)=cos(tetha)
so far i have done cos/sin=cos•sin and my teacher told me to equal it to zero but i i'm stuck. can someone help me find q1 2 3 4 
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04/18/15

Find the distance...
Find the distance in parsecs to Capella, which has an annual parallax of 0.077 arcsec.    ____ pc
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04/18/15

How many light-years is that?
The famous Pleiades star cluster is about 130 parsecs distant. How many light-years is that?   ____ ly
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04/18/15

What is the parallax of this star?
The red supergiant star in Orion is called Betelgeuse, and its distance is 130 pc. What is the parallax of this star?   ____ arcsec
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04/18/15

find the probability that, if two apples are chosen at random, the first weighs at least 20g more than the second
Normally distributed mean = 150g standard deviation = 16g
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03/20/15

Compound Interest on Loan Payments
If you owe $48,000 on a loan which charges an annual interest rate of 12% compounded monthly, and you can afford to pay $689 per month toward your loan, it takes 10 years to pay off your loan. If... more
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03/20/15

Formulate a system of equations
Lawnco produces three grades of commercial  fertilizer. A 100 pound bag of grade A fertilizer contains 18 lbs of nitrogen, 4 lbs of phosphate, and 5 lbs of potassium. A 100 bag of grade B... more
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03/06/15

How do you turn a percent into a decimal
Please help I am really not good at math and I will have another question after this
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01/14/15

3(x-2)-(3x+1)=4
my teacher says the answer is -7=-4
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01/03/15

temperature
matter is in a liquid state when temperature is between the melting point and it's boiling point.suppose that some substance has a melting point of -32.91C and a boiling point of 315.72C. what is... more
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12/28/14

What fraction of the bananas are left?
Miguel has 7 bananas and eats 4 bananas.
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12/22/14

how do i find y=mx+b from (9,8) and (7,3)
im stuck please help me with this algebraic equation
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12/19/14

The indicator of oil tank shows 1/5 full. when truck delivers 165 gallons oil, the indicator shows 4/5 full. What is the capacity ) of the tank?
options in gallons are 55 145 105 275 plz explain properly
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12/15/14

Let f(x)= 5x(squared) - 4x+2 or g(x)=4x-6
Find (f+g)(x) = Find (f*g) = 
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