09/29/13

Find the speed of the plane
A plan flies 420 miles with the wind and 350 miles against the wind in the same length of time . If the speed is 15mph, find the speed of the plane still in the air.  
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09/29/13

Calculation Body Mass
Calculating body-mass index (BMI) is a way to gauge whether a person should lose weight. Doctors recommend that body-mass index values fall between 19 and 25. The formula for Body mass index B is... more
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09/29/13

The Maximum Weight
The Maximum weight that a rectangular beam can support varies jointly as its width and the square of its height and inversely as its length. If a beam 1/3 foot wide, 1/4 foot high, and 17 feet long... more
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09/29/13

is there any relation between y=1/x graph and hyperbola? if so than explain how?
is there graph have same discription?  
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09/28/13

Two marbles are drawn, without replacement, from an urn containing 4 red marbles, 5 white marbles, and 2 blue marbles. Determine the probability that:
a. Both are red. b. The first marble drawn is red, and the second is blue. c. The first marble drawn is blue, and the second is red. d. One of the marbles is red and the other is blue.
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09/27/13

derivatives
f(x)= (5x2 -7)(x2-2) / x2+6 find f ' (x)  at x=5    
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09/27/13

at time = 20 s a rocket velocity is 15,000m/s, up, at time = 40 s the rocket's velocity was 17,500 m/s, up. what was its acceleration during that time?
at time = 20 s a rocket velocity is 15,000m/s, up, at time = 40 s the rocket's velocity was 17,500 m/s, up. what was its acceleration during that time? please help
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09/25/13

write the complex number in standard form?
write the complex number in standard form: (3-2i)^2(3+2i)                                                              ... more
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09/25/13

using binomial theorem whats the first term in (x-y)^12
i need the answer
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09/24/13

find the equation of a parabola whose focus is at (0,-2) and directrix at y=4
I need help finding the equation for the parabola
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09/23/13

whats the axis of symmetry for y=x^2+6x+6
whats the axis of symmetry
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09/23/13

What's the minimum y-value on the graph of y= f(x)
f(x) = x^2 - 4x - 2 the minimum y-value is y=?
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09/23/13

One solution of the equation x^3-8x^2+16x-3=0 is 3. Find the sum of the remaining solutions.
The answer is suppose to be 5, but I keep getting 2 irrational solutions.
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Lcm

09/22/13

At what times of the day between 10:00 a.m. and 5:00 p.m. do the chemistry presentation and the recycling presentation start at the same time?
Chemistry- Every 30 minutes   Recycling- Every 40 minutes
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09/22/13

Find the real zeroes of f. Use the real zeroes to factor f. F(x) = 4x^5-8x^4-x+2
I'm having trouble factoring and finding all the zeroes.  
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09/22/13

factor the expression x^6-1, using the following methods
Factor the expression x^6-1, using the following methods (a)Factor the expression by treating it as the difference of two squares, (x^3)^2-1^2 (b) Factor the expression, treating it as the... more
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09/22/13

How do I find the rule for these values?
x values= 2,4,6,8,10,12,14,16,18,20,22   y values= 7,8,13,19,20,24,32,37,38,41,47   How do I find the equation for this line?
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09/20/13

Find its time of flight?
A shell was fired from ground level with an initial speed of 350 m/s at an angle of 30 degrees to the horizontal. Assuming there is no air resistance, calculate:   a) its time of flight; b) its... more
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09/20/13

How to write an equation for a parabola in vertex form
 Like if i was givin a graphed parabola how would i figure out how to write the equation, in vertex form/
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09/18/13

What math subject is after this?
What math subject comes after Fourier Analysis for physics and electrical engineering majors?
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09/17/13

Find the three consecutive even integers such that five times the smallest is four times the largest
Find the three consecutive even integers such that five times the smallest is four times the largest  
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09/17/13

square root and Integers
The value of 3√180 is between which two integers?
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09/16/13

how do i solve multi step equations
i need to find the solution for y= 2x-1 and 3x-y=-1
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09/16/13

The sum of three consecutive integers is 378. Find the three integers.
how to you get the answer?
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09/16/13

An object is falling at a rate that is 60% of the acceleration of gravity....
An object is falling at a rate that is 60% of the acceleration of gravitytherefore it is pressing down on anything below it with:A> 100% of its massB> 60% of its massC> 140% of its... more
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