<u>650 cannonballs
</u>
Explanation step by step:
layer 12 is 12 ^ 2
<u>The formula is:
</u>
n * (n + 1) * (2n + 1) / 6
n = 12
12 (12 + 1) (2 * 12 + 1) / 6
12 * 13 * 25/6 =
650
<u>There are 650 cannonballs in this pyramid.</u>
Answer:
The employees arrives 8 minutes 55 seconds late .
Step-by-step explanation:
A r.v is uniformly distributed if its density function is
f(x) = 1/b-a
In the given question the lower limit a= 7:40 a.m and the upper limit b= 8:30 am
Putting the values we get
f(x)= 1/ 8:40 - 7:30
f(x)= 1/ 50 = 0.02
Now the random number is 0.571
P(x)= base * height
0.571= k* 0.02
Dividing
k= 0.571/ 0.02 = 68.55 minutes
Adding 68.55 minutes to 7:30 gives
8: 38.55
Now subtracting from upper limit gives 8 minutes 55 seconds.
The employees arrives 8 minutes 55 seconds late .
The first one is -763.1 and the second one is -24
Answer:
A. 3(5+x)
Step-by-step explanation:
if you multiply both 5 and x by 3(outside the parentheses), 3•5 is 15, and 3•x is 3x