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 musho3210 02-19-2007 09:29 PM

More math help, please answer fast

A=H(x+y)/2, make it y=

How do you find the distance between two points, (2,5) and (-4,3)

True or false:
A relation is a function if each input has only one output
Another name for the set of outputs of a function is the domain of the function.

The formula h=-16t squared + 96t gives the height of h in feet of a projectile at time t seconds. At what time(s) is the projectile 144 feet above the ground?

 GalaxyGirl 02-19-2007 10:48 PM

Re: More math help, please answer fast

Quote:
 Originally Posted by musho3210 How do you find the distance between two points, (2,5) and (-4,3)
I am giving my best guess, I had math last semester, but I got an F because I never did homework, so dont trust my answer 100%

2= x1 and 5= y1
-4=x2 and 3=y2

so d=(square root of all the next im going to type) (x2-x1)squared + (y2-y1)squared

so THEN d=(square root of all) (-4-2)squared + (3-5)squared

can you get it from there?

 jones57742 02-20-2007 02:39 AM

Re: More math help, please answer fast

Quote:
 Originally Posted by musho3210 A=H(x+y)/2, make it y= y=(2A/H)-X How do you find the distance between two points, (2,5) and (-4,3) ((2-(-4)^2+(5-3)^2)^.5 True or false: A relation is a function if each input has only one output Another name for the set of outputs of a function is the domain of the function. These are simple: Look in your book!! The formula h=-16t squared + 96t gives the height of h in feet of a projectile at time t seconds. At what time(s) is the projectile 144 feet above the ground? Look in your book for the quadratic formula or http://www.purplemath.com/modules/quadform.htm 0=-16t^2+96t-144 a=-16 b=96 c=-144

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