Problem Jim has 19{,}700\text { g}19,700 g19, comma, 700, start text, space, g, end text of sand in his sandbox. He brings home another 6{,}300\text { g}6,300 g6, comma, 300, start text, space, g, end text of sand from the beach to add to his sandbox.
How many kilograms of sand does Jim have in his sandbox now?

idk

step-by-step explanation:

i got 142 as my answer

step-by-step explanation:

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560