Remember that
so
(a+ b)^2 = a^2 + 2ab + b^2
1. x^2 + 2x*9i + (9i)^2 = x^2 + 18xi - 81
2. x^2 + 2x*(3+5i)+ (3+5i)^2 = x^2 + 6x + 10xi+ 9+30i-25 = x^2 - 16 + 30i + 6x + 10xi
He should guess about 34 times.
When you are rolling two dice there are 36 probabilities. In order to get an 8, there are 5 possibilities.
2 + 6, 3 + 5, 4 + 4, 5, + 3, 6 + 2
Therefore, the chances of an 8 are 5/36. Multiplying this by 250 gives us about 34.
The law of large numbers helps because it says the more rolls that take place, the more likely we are to get close to the expected value. With 250 rolls we should get pretty close.
Answer:
x = 16/3
Step-by-step explanation:
y varies inversely with x if ...
y = k/x
The constant k can be found from ...
xy = k
For the given point, ...
2·8 = k = 16
The relation is symmetrical, so we also have ...
x = k/y = 16/3 . . . . substituting the value at the second given point
The missing value is 16/3.
Answer:
<h2>10 inches</h2>
Step-by-step explanation:
Given the circumference= 30 in
we know that the formula for circumference is
The diameter is 2*r= 4.77*2=9.55 in
Approximately the diameter is 10 inches
Answer:
see
Step-by-step explanation:
diameter=2×pi×r
diameter. 2.22/7.r
