50 is the mean because you add all the diameters then divide by 8
Answer:
3/8
Step-by-step explanation:
Three of the eight outcomes have exactly two heads: HHT, HTH, THH. The probability of getting exactly two heads is 3/8.
Answer:
28
Step-by-step explanation:
the highest is 30 subtract that by 2 because it is 2 spaces below and then your answer should be 28
The number of permutations of objects from objects is .
The number of ways of choosing 3 digits from 6 digits without replacement ( order is important) is . This is the number of all possible permutations of choosing 3 from 6.
Correct choice is 120.
S10 = -150;
<span> the sum of next 10 terms = S20 - S10 => -550 = S20 + 150 => S20 = -700;
</span>S10 = -150 => 2a1 + 9r = -30;
S20 = -700 => 2a1 + 19r = -70;
Then 10r = -40 => r = -4 , and, 2a1 -36 = -30 => 2a1 = 6 => a1 = 3;