The answer to this question is 11.
Answer:
(i) 96 male
(ii) 12 female staff
Step-by-step explanation:
Population = 240
220 students, 20 staff
40% of the population is male (student and staff)
55% of the population are female <u>students</u>
40 + 55 = 95%
95% of the whole population is known, 5% are the female staff based on the problem.
240 x 0.4 = 96
240 x 0.05 = 12
I really hope that helps cause I went all out and best of wishes!!
Answer:
72 pens
Step-by-step explanation:
80*12 = 960
960*1.2 = 1152
242/15 = 16.1333333333
1152/16.1333333333 = 71.4049586778
71.4049586778 rounds up to 72 pens.
Answer:
rectangle with maximum area has dimensions of 745 yd x 1490 yd
Step-by-step explanation:
the rectangular area is
Area = x*y , where x= side along the river , y = side perpendicular to the river
since we have only 2980 yd of fencing, the total fencing ( perimeter) will be
x+2*y = 2980 yd =a
then solving for x
x= a - 2*y
replacing in the area expression
A=Area = x*y = (a- 2*y) *y = a*y - 2*y²
the maximum area is found when the derivative with respect to y is 0 , then
dA/dy= a - 4*y = 0 → y=a/4 = 2980 yd /4 = 745 yd
then
x= a - 2*y = a - 2* a/4 = a/2 = 2980 yd /2 = 1490 yd
then the rectangle with maximum area has dimensions of 745 yd x 1490 yd