Answer:
Answer:
Quartile Statistics
First Quartile Q1 = 52
Second Quartile Q2 = 53.5
Third Quartile Q3 = 61
Interquartile Range IQR = 9
Median = Q2 x˜ = 53.5
Minimum Min = 49
Maximum Max = 74
Range R = 25
Step-by-step explanation:
To get the vertex of the parabola we proceed as follows;
y=-7(x-4)^2-5
The above can be written as:
y=-7x^2+56x-117
The values of a,b and c are:
a=-7, b=56 and c=-117
x=-b/(2a)
x=-56/(-7*2)=4
but;
y=-7x^2+56x-117
y=-7(4)^2+56(4)-117
y=-5
Thus;
x=4 and y=-5
The vertex will be at point (4,-5)
Because the ratio of women to children is 10:1, double the ratio of men to women so the women are both 10:
Men to women becomes 8:10
Now total the 3 ratios: 8 for men, 10, for women and 9 for children:
8 + 10 + 9 = 27
Divide total people by that number:
270/27 = 10
Multiply 10 by each ratio:
Men = 8 * 10 = 80
Women = 10 * 10 = 100
Children = 9 *10 = 90
There is 80 men.
16/8= 2
2 is a whole number
A number - n
five times the number - 5n
nine more than five times the number - 5n+9
The answer is D.
