02/05/15
A rectangle has a perimeter of 30 inches. it's length is one less than three times it's width. what are the length and width of the rectangle.
I believe that it should be 30=3x-1 but I really don't know how to solve the problem.
02/05/15
2sin^4(x) + sin^2(x)cos^2(x) - cos^4(x) = 3sin^2(x)
Could you please make one side equal the other?
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02/05/15
Matt just got hired selling widgets. The Widget company has offered to pay Matt in two ways.
Matt just got hired selling widgets. The Widget company has offered to pay Matt in two ways. Plan A offers to pay him $0.75 for each widget he sells. Plan B offers to pay him $250 per week plus...
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02/05/15
what is 1/8 to the eighth power written as a negative exponent without using negative 1
I don't understand it
it
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02/05/15
Mixture word problem
A tank contains 20 / of a solution that is 60% acid. How much water must be added to reduce it to a 20% solution
02/05/15
Removable discontinuity?
A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS...
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02/05/15
what are f and a?
The following limit represents the derivative of some function f at some number a.
lim (1+h)^10-(1)/h
h-->0
what are f and a?
f(x)= ?
a= ?
02/04/15
Return trip one way
Terrell drove to the mountains at an average of 40 miles per hour. His return trip, by the same roads, averaged 50 miles per hour. His total driving time was 9 hours. How far did he drive one way?
02/04/15
The original amount of money shared among the three men?
A sum of money was shared among Daniel, Elliot, and Frank in the ratio 5 : 7 : 8 if Frank's share was $2,781 more than Daniel's share, what was the original sum of money shared among the three men?
02/04/15
sphere increasing in volume at rate of 3(pi)cm^3/s. what rate is its radius changing when the radius is 1/2cm? The volume of a sphere is given as V= 4/3(pi)r^3.
A sphere is increasing in volume at a rate of 3(pi)cm^3/s. At what rate is its radius changing when the radius is 1/2cm? The volume of a sphere is given as V= 4/3(pi)r^3.
02/03/15
A Delta 727 traveled 2520 miles
A Delta 727 traveled 2520 miles with the wind in 4.5 hours and 2160 miles against the wind in the same amount of time. Find the speed of the plane in still air and the speed of the wind.
02/03/15
tough question
The total curb weight of a truck, a car A, and a car B is 11,450 lb. The weight of car A is 15 lb less than the weight of two B cars. The truck weighs 2135 lb more than car A. What is the curb...
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02/03/15
One morning, Justin drove 4 hours before stopping to eat lunch at Pizza Hut.
One morning, Justin drove 4 hours before stopping to eat lunch at Pizza Hut. After lunch, he increased his speed by 10 mph. If he completed a 360-mile trip in 8 hours of driving time, how fast did...
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02/03/15
An executive invests $25,000, some at 5% and some at 4% annual interest.
An executive invests $25,000, some at 5% and some at 4% annual interest. If he receives an annual return of $1,100, how much is invested at each rate?at 5% interest $ at 4% interest $
02/03/15
the graph of f(x)=6^x is translated 3 units right and 9 units up to forn g(x). What is the function for g(x)?
the graph of f(x)=6^x is translated 3 units right and 9 units up to forn g(x). What is the function for g(x)?
02/02/15
Distance Word Problem Help
Having problem with setup of a word problem - Two cyclists start at 1:00 PM from opposite ends of a 54-mile race course. The average rate of speed for the first cyclist is 17mph, and the average...
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02/02/15
Given the volume and height, find a polynomial expression for the area of the base in terms of x for each figure.
V=Bh
V(x)=x^4-16
h=x+2
02/02/15
When a company manufactures 1000 game consoles, its profit is 20,000.00. When it manufactures 1500 game consoles, its profit is 35,000.00
A) Find the slope, m, of the line that models the profits as a function of the number of consoles B) Use a complete sentence to interpret the value of m. C) Sketch the graph libe passing through...
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02/02/15
Suspension bridge
A suspension bridge has twin towers that extend 75 meters above the road surface and are 400 meters apart. The cables are parabolic in shape and are suspended from the tops of the towers. The...
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02/02/15
Fractions!
Sam was planning his time during study week. He decided to allocate 5 days of 6 hours each to homework. He decided to spend 2/5 of the time on math, 10% of the total time on language arts, and 0.4...
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02/02/15
A desired mixed solution of 8% Minoxidil. She has 60 ml of a 4% solution and wishes to add 10% to obtain 8% solution. How much 10% solution should she add?
A desired mixed solution of 8% Minoxidil. She has 60 ml of a 4% solution and wishes to add 10% to obtain 8% solution. How much 10% solution should she add?
02/02/15
The area of a sector
The area of a sector of a circle with a diameter 0f 8 cm is 16π/3 square cm. Find the measure of the central angle of the sector.
02/02/15
Word problem
Antifreeze is a compound added to water to reduce the freezing point of a mixture. In extreme cold (less than -35 F ) one car manufacturer recommends that a mixture of 65% antifreeze be used. How...
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