Question

Can someone help me??(:

Answer 1

\[What is product of 5\sqrt{3}\times 4 \sqrt{15}? simplify if possible.\]
\[A.) 60\sqrt{15}\]
\[B.) 20\sqrt{5}\]
\[C.) 20\sqrt{15}\]
\[D.) 60\sqrt{5}\]

Answer 2

@Teddyiswatshecallsme @amistre64 @KyanTheDoodle

Answer 3

what have you attemoted?

Answer 4

**attempted

Answer 5

c? but im really not sure

Answer 6

C is like totally not it

Answer 7

sqrt(a) * sqrt(b) = sqrt(ab)

Answer 8

so

even tho 5*4 = 20, 3*15 isnt 15

Answer 9

so it would be B?

Answer 10

if 3*15 isnt 15, then it sure isnt goinna be 5

it aint B

Answer 11

5*4 = 20

sqrt(3)*sqrt(15) = sqrt(???)

Answer 12

45

Answer 13

good

so the solution is some simplified version of

20 sqrt(45)

can sqrt(45) be simplified? any perfect square factors in 45?

Answer 14

maybe 9*5 = 45?

Answer 15

20 sqrt(45)

20 sqrt(9*5)

20 sqrt(9) sqrt(5)

Answer 16

so that would be D?

Answer 17

60 sqrt(5)

yes :)

Answer 18

yay thank you for helping me!(: