1.Ahmad has just received the results of three assignments that he completed last week. His marks were 34 out of 40 on his science fair project,64 out of 80 on
his geography presentation, and 21 out of 25 on his French oral dictation.
a)Calculate each of Ahmad's marks as a percent. b) To summarize his results,
Ahmad decides to calculate two average percentages: First, he calculated the
mean of the three percents in part a). Second, he calculated the percent of total
marks awarded out of total marks available for all three scores. Explain whether
these two percents should be the same. If not, which value should be higher.
Then calculate both values and compare."

29.5977692753

step-by-step explanation:

$15 each

step-by-step explanation:

$45/3 children= $15 each

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

multiple all that

step-by-step explanation:

27×17