Answer:
A 40% chance of choosing a poor or rich person
Answer:
D
Step-by-step explanation:
Answer:
b 43.5 cm^2
Step-by-step explanation:
The area of a trapezoid is found by using the formula
A = 1/2 (b1+b2) h
where b1 and b2 are the lengths of the bases
A = 1/2(13 +16) *3
A = 1/2 (29)*3
A = 43.5 cm^2
2x+3y=60 solve for x...
x=(60-3y)/2
p=xy^3, using x from above:
p=y^3(60-3y)/2
p=(60y^3-3y^4)/2
dp/dy=(180y^2-12y^3)/2
dp/dy=90y^2-6y^2
dp/dy=0 when:
90y^2-6y^3=0
6y^2(15-y)=0, we know y>0 so
y=15, since x=(60-3y)/2
x=7.5
(We solved it this way because otherwise you get quartic equations and cubic derivatives, yuck :P)
We know, Circumference of a Circle = 2πr
Here, r = 500/2 = 250
So, C = 2 * 3.14 * 250
C = 1570 Km
In short, Your Answer would be Option B
Hope this helps!
