21 is 35% of what number? a. ; 7.4 b. ; 60 c. ; 40.8 d. ; 62.4

1.677

step-by-step explanation:

i'm not good at explaining stuff but if you need an answer i'm here for you.

step-by-step explanation:

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%

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50