Answer:
b) 1.34
Step-by-step explanation:
The z score is used to determine the number of standard deviations by which the raw score is above or below the mean. If the z score is positive then the z score is above the mean while for a negative z score implies that it is below the mean. The z score is given by:

For the largest 9%, the score is 100% - 9% = 91% = 0.91
From the normal distribution table, the z score that corresponds to 0.91 is 1.34
Answer:
x = 3
Step-by-step explanation:

They weigh the same --- One pound.
One pound of feathers = One pound of iron
Answer:
each number in the ratio 4:5:7 is worth 6 sweets. add 4,5, and 7 to get 16 then multiply it by 6 to get 96 sweets.
Step-by-step explanation:
add the ratios = 4+5+7= 16
1 number = 6 so
4x6= 24
5x6=30
7x6=42
Frank gets 24 sweets
Mary gets 30 sweets
Seth gets 42 sweets
The total number of sweets they shared is 24+30+42= 96
The share 96 sweets altogether.
The check your answer; do 42-24= 18
Therefore, now we know that the difference between Seth and Frank's amount of sweets is 18.
Therefore, this is correct.
The answer is B. Use the u.s rule to solve the balance after payments for the 100th and 180th