Question

fifteen times the square of a non-zero number is equal to 20 times the number

Answer 1

Helpp Pleasee

Answer 2

let the number be x
square of the number is : x^2
so the equation becomes

15*(x^2) = 20*x
can you solve it now ?

Answer 3

Noo..(: Answerr Please

Answer 4

15x^2 - 20x = 0
5x(3x - 4) = 0
tell me the solutions now ?

Answer 5

I Need dha answer im doing a test lol ian got time to be thinking and solving

Answer 6

now you should be able to
Here we guide and help and WE DON`T give direct answer

i have taken you to last step i want you to atleast try

Answer 7

I like @harsimran_hs4 's approach. That's fair.

Answer 8

Do i Multiply the 5 and 3 ?? and then subtract 4?

Answer 9

consider pq = 0 , so what are the possible solutions
either p = 0 or q = 0 or both are zero
now if you carefully observe in above equation
p = 5x and q = 3x-4
now tell what are possible values of x ?

Answer 10

its 5x and 3x ???

Answer 11

look either 5x can be zero or 3x-4 can be zero or both
if 5x = 0 then x = 0
if 3x-4 = 0 then x = 4/3
but the number is non zero
so x = 4/3

Answer 12

since you had problem understanding , try and analyze each step
and ask if there is any doubt

Answer 13

It Says That Was Wrong But Thanks Anyway (:

Answer 14

Really? \(\frac{4}{3}\) Is wrong? I don't think so...

\(15(\frac{4}{3})^2=20\frac{4}{3}\)
\(15(\frac{16}{9})=\frac{80}{3}\)
\(\frac{240}{9}=\frac{80}{3}\)

Answer 15

and yes since it was a quadratic eq it can have atmost 2 real solutions and they are 0 (which you can easily see) and 4/3 (which @KeithAfasCalcLover showed above)

so check if you copied the statement correctly

Answer 16

k