Answer:
t= 3 years
Step-by-step explanation:
So far we have 2 useful relationships
and 
Now, clearing t
I apply logarithm
years
Done
Percent formula : is/of = %/100
% = n
is = 23
of = 94
now we just sub our numbers into the formula
23/94 = n/100 <===
Answer:
Step-by-step explanation:
From your choices, it looks like you want m<A
Solution
<C = 46° The triangle is isosceles. The two marked sides are equal.
<A + <B + <C = 180l All triangles have interior angles = 180
<A + 46 + 46 = 180 Combine
<A + 92 = 180 Subtract 92
<A = 180 - 92
<A = 88
Answer:
μ = 1 The firm expects that one oil exploration will be successful.
v(x)= 0.9
Step-by-step explanation:
The first step is to define the random variable x as:
x: number of oil explorations being succesful
Then x can be take this values:
x = 0 , x =1 ... x =10
x is a binomially distributed random variable with parameters.
p = 0.1 and n=10
And the mean or the expected value of x is:
μ = E(x) = np
Then μ = 10*0.1 = 1
And the variance of x is:
V(x) = np(1-p)
V(x) = 10(0.1)(1-0.1)= 0.9
