Let w be Mara's walking pace. Then:
5/6w=5/3 hrs
w=6/5*5/3=2 mph
☺☺☺☺
Answer:
300%
Step-by-step explanation:
$2.25 divided by $0.75 = 3 (new price divided by old price)
This means the price has gone up by 300% as $0.75= 100%
(I’m not sure I explained this very clearly, if you want me to rewrite it just say!)
Answer:
17
Step-by-step explanation:
Answer:
0.4546
Step-by-step explanation:
nCr = n!/(n-r)!r!
Number of ways of selecting the four defective voltage regulators from 12 = 12C4 = 12!/(12-4)!4! = 12!/8!4! = (12 *11*10*9)/(4*3*2*1)
12C4 = 495 ways
Number of ways of selecting 2 defectives from line 1 = 6C2 * 6C2
6C2 = 6!/(6-2)!2! = 6!/4!2! = (6*5)/(2*1) = 15
6C2 * 6C2 = 15*15 = 225 ways
Probability = Number of possible outcomes/ Number of total outcomes
Probability that exactly 2 of the defective regulators came from line 1 = 225/40.95 = 0.4546
Answer: .3 as a fraction is 3/10
3/10 and .3 as a percent is 30%
