(3y-7)(9y^2+21y+49)
its for edmentum

Step-by-step explanation:

(3y-7)(9y^2+21y+49)

= 27y^3 + 63y^2 + 147y - 63y^2 - 147y - 343

= 27y^3 - 343

Hope this helped!

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

sine

step-by-step explanation: