under 21 years of age= 40 25 20 tot= 85
between 21 and 40= 35 20 30 tot = 85
over 40= 20 30 35 tot = 85
If one of the 255 subjects is randomly selected
P (over 40) = 85/255 = 1/3
Hope this helps!
Answer:
130
Step-by-step explanation:
just apply rhe formula of trapezium i.e. 1/2(a+b)h
a is the upper side/base
b is the lower side/base
h is the height
First you take the area,
4 x 2 = 8 cm
Then you take 72 cm and divide it by 8 cm to get your length
So the answer for the length is 9 cm
I believe the answer should be 270.
You should replace the “d” in 30d with a nine because the “d” stands for how many days. The question said there are nine days so you would get this...
30x9=270 minutes in total
