2,195 Answered Questions for the topic Pre Calculus
09/14/15
find the lengths of the triangle and the square
the sides of an equilateral triangle are one unit more than the sides of a square. If the sum of their perimeters is equal to 107 inches, then find the lengths of the sides of both the square and...
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Pre Calculus
09/10/15
y is at most two units from a.
Use absolute value notation to describe the situation.
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Pre Calculus
09/09/15
Precalc word problem
An object is rotating at 600º per second, find the central angle of Θ, in radians, when t= 3 seconds
08/31/15
integration help
using integration, find the area of each of the enclosed regions
I've completed one correctly, but have no clue how to solve the other two can someone help? or set up the other two for...
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08/31/15
find the derivative of each of the following
1) f(x)=6x-11/8x+1
2) f(x)=(5x-2)(2x+3)/x-4
3) f(x))=√¯8-5x
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08/31/15
INTEGRATION
Using integration find the area of each of the enclosed regions how do I solve these?????? 1) x-axis and f(x)=2x-x^2 2) f(x)=x^2 and g(x)=x 3) f(x)=x^3-3x and g(x)=x
Pre Calculus
08/28/15
(4a+2)^3 find the product
I dont know what to do or how to start the problem. Math is not an easy subjuct for me, please help!!
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08/27/15
find the derivative of each of the following
1)f(x)=(3x2+5)(2x-1)
2) f(x)=6x-11/8x+1
3) f(x)=(5x-2)(2x+3)/x-4
4)f(x)=(8x+3)2
5) f(x)=√¯8-5x
6) f(x)-6x(7x-1)2
7) f(x)=-6ex+1
8) f(x) =1n(5x2-3x)
9)f(x)=5x2/ex
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Pre Calculus
08/27/15
.Determine the # of times a month the train must be used so that the total monthly cost w/out the pass is the same as the total monthly cost with the pass.
Train ticket is $2.00.Option of month pass for $18.00 each month.w/pass tickets only$1.25.
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08/26/15
is the function a one to one?
f(x)=1/(x^2−1)
i have to explain if its a one to one and why. i have no idea
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Pre Calculus
08/24/15
On January 1, 2010, an investment was worth $1000. By the end of 2010 the investment had lost 35%. What percent must the investment grow by in 2011 to be worth
On January 1, 2010, an investment was worth $1000. By the end of 2010 the investment had lost 35%. What percent must the investment grow by in 2011 to be worth $1000 by the end of 2011? Round your...
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Pre Calculus
08/20/15
y=59.617+1.18t/1+0.012t
A model that represents the data is given by:
y=59.617+1.18t/1+0.012t
0 less than equal to t less than or equal to 70
where t is the time in years, with t =0 corresponding to 1930.
a)...
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Limits help!!!
Determine whether the function is continuous or discontinous. Justify your reasoning. If discontinuous, identify points of discontinuity.
2-X^2 if X <= 1
ƒ(x)=...
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08/17/15
Can you represent ever series in sigma notation
can you?
can the series 1+4+9+61+52 be represented in sigma notation
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08/15/15
Express the series below in summation notation for the specific number of terms
A.) 0+1+2+3+4+5+6+7+8+9
b.) 4+8+12+16+20
c.) 6+11+16+21+26+31+36
d.) 0+3+8+15+24+35+48+63+80
e.) sum of a& e
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Pre Calculus
08/15/15
Cant solve question below
The population of Abnerville was 12,500 people in 1950. In 2000, the population was 250,000. Find the average rate of increase in the population over the 50 year period.
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Pre Calculus
08/12/15
Finding distance using Angles and Sine
Two weather tracking stations are on the equator 159 miles apart. A weather balloon is located on a bearing of North 38 degrees East from the station and on a bearing of North 14 degrees from the...
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Pre Calculus
08/07/15
word problem HELPPPP
the area of a rectagula garden is 125 ft sq. the garden is to be enclosed on three sides by a brick wall costing 20$ a foot and on one side by a fence costing 9 $ a foot. express the cost to...
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Pre Calculus
06/22/15
use a graphing utility to graph f(x)=0.2x^4+0.2x^3-0.9x^2+5 on the interval (-3,2) and approximate any local maxima and local minima
determine where f is increasing and where it is decreasing
using a graphing utilty, graph the function for -3<x<2 and -5<y<10.
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06/08/15
Sonic boom trig question
The US Air Force was running maneuvers with the F22 Raptor, flying low enough so that you could see the shock cone created as the jet flies overhead at supersonic speeds. You wanted to take a video...
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Pre Calculus
06/03/15
pre cal simplify
2m2-7m-15 9-4m2
divide * (3-2m)
2m2-10m 6
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Pre Calculus
06/03/15
pre cal simplify
x2-4 x2+x-6
divide
x2-4x x2+x-20
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