06/18/15

Physics: What is the tangential velocity, and how many revolutions?
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the... more
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06/17/15

Please explain and show work
Kyle has two summer jobs. He earns 7.25 per hour at an icecream stand and 9.50 per hour doing landscaping. In July, Kyle will work 45 hours and earn 382.50. How many hours will Kyle do of... more
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06/16/15

Rate of Change
Find the average rate of of change of f(x) = -2x^2 +6 a. from 2 to 4 b. from -1 to 1 c. from -3 to o
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06/16/15

Distance problem with unknown rate of speed
A plane is traveling at a constant rate of speed from city A to city B and arrives in 2 hours. On the trip back from city B to city A the plane travels 10 miles per hour slower and arrives 30... more
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06/16/15

word problem and linear equations
A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 80 pounds. The truck is transporting 65 large boxes and 55 small boxes.... more
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06/15/15

Word problems?:(
your cell phone plan has just expired with Company X and you want to switch companies. Below is the information you gathered regarding the plans you are considering: Cingular does not have an... more
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02/27/15

Find the average value of the function
Find the average value of the function f(t)=-5te(-t^2) on the interval [0,5]. favg=?
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02/27/15

How much would Greg need to have on deposit at retirement in order to withdraw $35000 annually over the 15 years if the retirement fund earns 4 percent?
How much would Greg need to have on deposit at retirement in order to withdraw $35000 annually over the 15 years if the retirement fund earns 4 percent?
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02/26/15

solve word problem
A corner lot that originally was square lost 185 m2 of area when one of the adjacent streets was widened by 3 m and the other was widened by 5 m. Find the new dimensions of the lot. (hint: Let x=... more
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02/26/15

a circle has a radius with endpoints at (-3,1) and (2,-5). find the circumference and area of the circle. Write the answer in terms of pi
a circle has a radius with endpoints at (-3,1) and (2,-5). find the circumference and area of the circle. erote the answer in terms of pi
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11/24/14

Question below
Need two equations    Bob had $20,000 to invest for one year and he invested different accounts in two accounts. The first account was a CD that earned interest at a 6% annual simple rate. The... more
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11/22/14

limit x?0 for 1/x-log(1+x)/x^2
please solve it  
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11/17/14

Compounded annually
The parents of a baby want to provide for the child's college education. How much should be deposited on each of the child's first 17 birthdays to be able to withdraw $10,000 on each of the next... more
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10/09/14

one week you work 20 daytimes hours and 20 nightime hours, and earn $380. another week you work 30 daytime and 12 evening and earn $276
What is daytime andwhat is nigtime rate?
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10/08/14

A clothing manufa has some silk thread some thread that is 70% silk. How many kilograms of each must be woven together to make 75 kg of cloth that is 88% silk
need answer for pure silk thread and 70% silk thread please don't mind spelling just because you can only fit 160 characters in the question.
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10/01/14

The length of your room is 2 ft more than three times the width. If the area is 16 ft, find the width and the length.
I need help.
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09/18/14

Distance Problem Solving
A diesel train traveled north. 14 hours later a freight train left traveling at 70 mph in an effort to catch up to the diesel train. After traveling for six hours the freight train finally caught... more
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09/18/14

I'm not sure how to solve this or even how to set up the equation.
Melissa Patterson won $12000 in a contest. She decided to invest part of the money at 3% simple interest, and put the rest in an investment paying 4% simple interest. At the end of the year, she... more
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09/16/14

Average speed of a car on a trip.
A car travels for an hour at a speed of 20 km/hr, the next two hours at a speed of 65 km/hr and the final hour at a speed of 85 km/hr. What is the average speed of the car for the entire trip?
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09/16/14

Word problem
If 20 lb of rice and 30 lb of potatoes cost $29.80, and 30 lb of rice and 12 lb of potatoes cost $29.52, how much will 10 lb of rice and 50 lb of potatoes cost?
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09/16/14

word problem help
Sarah blends coffee. She needs to prepare 170 pounds of blended coffee beans selling for $4.12 per pound. she plans to do this by blending a high quality bean costing $5.25 per pound and a cheaper... more
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09/16/14

Solve the system
Solve the system  x1+x2-4x3=3  3x1+4x2+3x3=-8   x1=? x2=? x3=?
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09/16/14

write 2 linear functions : one to model a cost that the business has and the other to model the revenue of the business
the template of the model might look something like this: revenue= (amount off each customer)(number of customers) Cost=(cost created by each customer)(number of customers) + (some flat cost... more
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08/28/14

Division of polynomials: x^3-7/x-2
This is a division of polynomials. It is supposed to be divided by using the division algorithm. Please help me!
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08/18/14

Least value of tan2?T + cot2?T is
Least value of tan2Θ + cot2Θ is 
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