Question

need help solving this

Answer 1

\[\frac{ 15x ^{8} }{ 24y ^{5} } \div \frac{ 4x ^{4}}{ 8y ^{2} }\]

Answer 2

I don't know, i am sorry :3 (dumb at maths)

Answer 3

@AkashdeepDeb @Mackenzie2013 @cail @bookworm00981 @thomaster

Answer 4

@phi could you pleasee help me

Answer 5

change the divide to a multiply. You can do this if you "flip" the 2nd fraction

Answer 6

in other words
\[ \frac{ 15x ^{8} }{ 24y ^{5} } \div \frac{ 4x ^{4}}{ 8y ^{2} } = \frac{ 15x ^{8} }{ 24y ^{5} } \cdot \frac{ 8y ^{2} }{ 4x ^{4}} \]

Answer 7

so the 4 and 24 cancels out

Answer 8

First, do the numbers:
\[ \frac{15\cdot 8}{24\cdot 4} \]
can you simplify those numbers?

Answer 9

yes

Answer 10

what do you get ?

Answer 11

5/4

Answer 12

now simplify the x's
\[ \frac{x^4}{x^8}\]
can you simplify that ?

Answer 13

yes 1/2

Answer 14

almost the right idea. remember what x^4 means?
x*x*x*x
x^8 is x*x*x*x*x*x*x*x
so
\[ \frac{x^4}{x^8} = \frac{x\cdot x \cdot x \cdot x}{x\cdot x \cdot x \cdot x \cdot x\cdot x \cdot x \cdot x}\]
use the idea that \(\frac{x}{x}= 1 \)

Answer 15

each x/x is 1

in other words
\[ \frac{x^4}{x^8} = \frac{x\cdot x \cdot x \cdot x}{x\cdot x \cdot x \cdot x \cdot x\cdot x \cdot x \cdot x} = \frac{x \cdot x \cdot x \cdot x}{x\cdot x \cdot x \cdot x }\cdot \frac{1}{x\cdot x \cdot x \cdot x}
\]