29.99-20%= 23.99
25.00-10%= 22.50 so, Mr.chang got the better deal ( but not by much.)
Answer:
Picture below
Step-by-step explanation:
● 5/2 is 2.5 so just divide the space between 3 by 2
● for 1/3 divide the space between 0 and by 3
Answer: Standard deviation is 11.6
Step-by-step explanation:
Sample mean 52/4=13
X. X---x(bar). X---x(bar)^2
0. 0--13=-13. -13^2=169
14. 14--13=1. 1^2=1
28. 28--13=15. 15^2=225
10. 10--13=--3. --3^2=9
__________________________
52. 404
Standard deviation=√404/3=11.6
Answer:
the option are A.
92.4%
B.
7.6%
C.
91.8%
D.
8.2%
Step-by-step explanation:
Think of it what times 61 will equal 66....
61 () = 66
(?%) = 66 /61
(?) = 1.08196
so now it gets tricky get the percentage increase correct
based on the given answer choices I'ld say it is D
% increase = (1.08196 - 1) (100) Why the subtraction of one? ?
= 8.196%
= 8.2 %
