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#1 2006-06-08 05:00:44

needhelpplease
Guest

Algebra problem

1.If N = h(A²-B²),find N when h = 7,A = 5 and B = 3


2.IF V = hr², find V when h = 5 and r = 3

#2 2006-06-08 05:18:40

luca-deltodesco
Member
Registered: 2006-05-05
Posts: 1,470

Re: Algebra problem

just substitue the values

N = 7*(5^2 - 3^2) = 7*(25-9) = 7*14 = 91

V = 5*3^2 = 5*9 = 45


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#3 2006-06-08 18:02:14

numen
Member
Registered: 2006-05-03
Posts: 115

Re: Algebra problem

Just a correction...

1) N = 7*(5^2 - 3^2) = 7*(25-9) = 7*16 = 112 tongue


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#4 2006-06-12 03:18:51

the_wildcats
Guest

Re: Algebra problem

The answer to the first one is 112. Im so nervous...ive got my math exam tomorrow and i need an 80% to pass the course...keep your fingers crossed:P:P:P

#5 2006-06-12 03:20:20

the_wildcats
Guest

Re: Algebra problem

Number 2 is 45 tongue

#6 2006-06-12 03:22:51

the_wildcats
Guest

Re: Algebra problem

luca-deltodesco, 25-9 is 16 tongue dont worry i do it all the time:P

#7 2006-06-12 03:25:48

luca-deltodesco
Member
Registered: 2006-05-05
Posts: 1,470

Re: Algebra problem

the_wildcats wrote:

luca-deltodesco, 25-9 is 16 tongue dont worry i do it all the time:P

oooh yeh big_smile


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