Answer:
- 76.2% total return
- 2.87% annual return
Step-by-step explanation:
The total return is the rate of increase over the whole period:
% change = (11100/6300 -1) × 100% = 76.2%
The annual return is the rate of return that gives this growth over 20 years:
(1 +r)^20 = 1 +76.2%
r = 1.762^(1/20) -1 ≈ 2.87%
The total return is about 76.2%; the annual return is about 2.87%.
So we know that surface area is top circle +bottom circle+ (circumfurence times height so) 2(π(radius)^2)+(height(2π(r))) so fill in the blanks
it's kind of hard to see but πr means pi times radius (r)
2πr^2+((4.2)(2)(π)(r))=628.3
factor out the 2 so the equation would mean
2((πr^2)+(4.2πr))=628.3
divide both sides by 2
πr^2+4.2πr=314.15
what's interesting is that the first few digits of pi are 3.1415 so we aproximate pi as 3.14 and divide both sides by 3.1415
r^2+4.2r=100
subtract 100 from both sides
r^2+4.2r-100=0
factor
(x-8.11812)(x+12.3181)=0
so (if xy=0 then x or/and y must be 0 so)we set them to 0 so
x-8.11812=0
x=8.11812
second one
x+12.3181=0
x=-12.3181
since radii (or any legnth) cannot be negative, we can cross this solution out so
radius=8.11812
3x2 x -3b
6-3b
Hope this helps
Answer:
7/56
Step-by-step explanation:
This is because there are 56 people and seven out of them are on the honor roll and have perfect attendance. You have a seven out of fifty-six chance of choosing them.
