Answer:
Part A) The 15th percentile of the head circumference of males 3 to 5 months of age in a certain city is 41.5 cm.
Percentile : A data item is said to be in nth percentile of distribution if n% of the distribution are less than that particular data item.
So,<u> by definition</u> we can say that the given statement means that 15% of males of 3 to 5 months of age have a head circumference less than or equal to 41. 5 cm
Part B ) The 90th percentile of the waist circumference of females 2 years of age in a certain city is 52.7 cm.
Percentile : A data item is said to be in nth percentile of distribution if n% of the distribution are less than that particular data item.
So,<u> by definition </u>we can say that the given statement means that The 90th percentile means that 90% of females of 2 years of age have less than or equal to 52.7 cm for their waist circumference
Step-by-step explanation:
M = L + rL
a.
L = $63.80
M = $121.80
need to find r
121.80 = 63.80 + r×63.80
58 = r×63.80
r = 58/63.80 = 0.91 = 91%
b.
L = $65
M = $146.25
need to find r
146.25 = 65 + r×65
81.25 = r×65
r = 81.25/65 = 1.25 = 125%
Well 16 ounces equals a pound. So 16+16=32 ounces.
So 32 ounces times $0.30 equals 9.6.
So 2 lbs should cost $9.6.
Hope this helps.
Answer:
wouldn't be $30 all together
Step-by-step explanation:
Answer: Fran's number is 70
Step-by-step explanation:
Let x represent Jen's number.
Let y represent Carrie's number.
Let z represent Fran's number.
When you add their numbers together you get 207. This means that
x + y + z = 207 - - - - - - - - - -1
Jen's number is 9 more than Carrie's number. It means that
y = x - 9
Fran's number is 3 less than Jen's number. It means that
z = x - 3
Substituting y = x - 9 and z = x - 3 into equation 1, it becomes.
x + x - 9 + x - 3 = 207
3x - 12 = 207
3x = 207 + 12 = 219
x = 219/3 = 73
y = x - 9 = 73 - 9
y = 64
z = x - 3 = 73 - 3
z = 70