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Old 07-09-2003, 02:42 AM   #1
bmwm5lover
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For Those Good In Math!!!!



I need URGENT HELP with the following word problems! please help me get them ASAP

1) The sum of two real numbers is 19 and their product is -66. Fin the number.



2) The average of a number and its reciprocal is 17/8. Find the number.




3) The difference of a number and three times its reciprocal is 23/6. What is the number.



ALL HELP APPRECIATRED!!!!!!!
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Old 07-09-2003, 03:00 AM   #2
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answer to number 1 is......22 & -3
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Old 07-09-2003, 03:00 AM   #3
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1) x + y = 19 xy=-66
x=22 y=-3
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Old 07-09-2003, 03:01 AM   #4
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Quote:
Originally posted by 85eta
answer to number 1 is......22 & -3
lol, u posted as i was typing it.
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Old 07-09-2003, 03:01 AM   #5
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Quote:
Originally posted by 85eta
answer to number 1 is......22 & -3
Next time i see you, Im buying you a coffee!
Try to help me on the other ones too !!!! I need help BADLY!
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Old 07-09-2003, 03:04 AM   #6
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Quote:
Originally posted by ///deni-boy///
lol, u posted as i was typing it.
haha, ya just beat ya!...the other questions are much harder
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Old 07-09-2003, 03:05 AM   #7
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what does reciprocal mean? man i forgot this stuff.
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Old 07-09-2003, 03:06 AM   #8
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Quote:
Originally posted by ///deni-boy///
what does reciprocal mean? man i forgot this stuff.
reciprocal of 17/8 is 8/17
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Old 07-09-2003, 03:06 AM   #9
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ohhhhh ok, thanks.
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Old 07-09-2003, 03:07 AM   #10
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what about this one.....

a football is kicked into the air and its height (h) after (t) seconds is given by h=-16t squared+48t+64. After how many seconds will the ball hit the ground.


This is what i have, but i cant figure out what to do next.


h=-16(t squared-3t-4)
h=-16(t+1)(t-4)

NOW WHAT?
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Old 07-09-2003, 03:07 AM   #11
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Re: For Those Good In Math!!!!

Quote:
Originally posted by bmwm5lover
I need URGENT HELP with the following word problems! please help me get them ASAP

1) The sum of two real numbers is 19 and their product is -66. Fin the number.



2) The average of a number and its reciprocal is 17/8. Find the number.




3) The difference of a number and three times its reciprocal is 23/6. What is the number.

Hey Terry, is this EXACTLY what the questions say? #2 and 3 seem like there would be TWO numbers in the answer?


ALL HELP APPRECIATRED!!!!!!!
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Old 07-09-2003, 03:10 AM   #12
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Quote:
Originally posted by bmwm5lover
what about this one.....

a football is kicked into the air and its height (h) after (t) seconds is given by h=-16t squared+48t+64. After how many seconds will the ball hit the ground.


This is what i have, but i cant figure out what to do next.


h=-16(t squared-3t-4)
h=-16(t+1)(t-4)

NOW WHAT?
t+1=0 its not this because its negative number
t=-1

t-4=0
t=4, that is your answer.
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Old 07-09-2003, 03:11 AM   #13
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Quote:
Originally posted by ///deni-boy///
t+1=0 its not this because its negative number
t=-1

t-4=0
t=4, that is your answer.
Nice work....this time you just beat ME!
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Old 07-09-2003, 03:11 AM   #14
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oh BTW i'm just going by what u have done so far, i didnt do the math before that step.
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Old 07-09-2003, 03:11 AM   #15
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Quote:
Originally posted by 85eta
Nice work....this time you just beat ME!
hehehehe
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