Hello!
The formula is given to you. :)
C = 3.14 • D (diameter; line across a circle that cuts it in half)
C = 3.14 • 21 = 65.94 inches.
Hope I helped! Also, I hope I didn’t answer this too late. ;)
~Destiny ^_^
Answer:
25
Step-by-step explanation:
a² + 7a + 7
a = 2
Plug in the value of 2 for every occurance of a.
(2)² + 7(2) + 7
First, solve the exponent.
4 + 7(2) + 7
Now, multiply.
4 + 14 + 7.
Add.
25
This is your answer.
Hope this helps!
17x + 16x + 12x =180
45x = 180
x = 4
Largest angle = 17*4 = 68 degrees
Those are the ones that are in 50s or
50,51,52,53,54,55,56,57,58,59
10 numbers per hundred
150
250
350
450
550
650
750
850
950
9 of the hundreds
10 per each
9 times 10=90
so there are 90 of them
Answer:
∑E(x
) = 13.49167 floors
Step-by-step explanation:
The expected number of floors no one get off = ∑E(x) where i is from 0 to 23
and E(x) = ∑xP(x)
here x is the indicator of floor where no one gets off, its value is 0 when atleast one person get off on its floor and 1 when when no one gets off.
Now,
P(x=1) = (22/23)¹²
P(x=0) = [1-(22/23)¹²]
Now,
E(x) = ∑xP(x) = 0* [1-(22/23)¹²] + 1*(22/23)¹² =0.586594704
For total number of floors where no one gets off
∑E(x) = E(x₁)+E(x₂)+E(x₃)........................+E(x₂₃)
∑E(x) = 23*0.586594704
∑E(x) = 13.49167 floors
