There are 15 rows, hope this helped!
Answer:
Step-by-step explanation:
Given that total students =23.
15 have taken English, 13 Math and 8 both
number of students taking math only = total math - students who have taken both
= 13-8 = 5
Number of students taking English only = total English - students who have taken both
= 15-8 =7
Now we divided into 3 disjoint partitions as only Math, only English and both.
Thus no of students who have taken either math or english = 7+5+3 = 15
No of students who have taken neither = 24-15 = 9
Step-by-step explanation:
"t t hours" ????
you mean 11 hours ?
13 gallons now.
2 gallons are used (and therefore disappear from the tank) per hour.
so, in 5 hours 5×2 = 10 gallons will be used.
that leaves 13 - 10 = 3 gallons in the tank.
in 11 hours 11×2 = 22 gallons would have been used.
but there are only 13 gallons in the tank.
so, if he does not fill up, he will have 0 gallons left after 11 hours. in fact, already after 13/2 = 6.5 hours.
the point :
when you use 2 gallons per hour, that means in t hours you are using t × 2 or 2t gallons.
SA , 4 and pi are all constants so you can ignore them.
* edit: had r and h reversed..
1 = (3h)(r)^2
1/3 = h(r)^2
1/3 = (r)^2
√(1/3) = r
h and r are inversely related so tripling h will reduce r by 1/√(3)
Ok so when u do this you have to put alottttt