Answer:
Binomial Problem with n = 20 and p(hire woman) = 1/2
P(at most two) = binomial(20,1/2,2) = 0.0001811
Step-by-step explanation:
The probability of successes in trials where is the probability of success on any given trial is given by:
ANSWER:
a)
b)
EXPLANATION:
Given:
a) When x = -4, let's go ahead and solve for y;
When x = 0, let's go ahead and solve for y;
When x = 4, let's go ahead and solve for y;
b) Using the above values, we can go ahead and the equation as seen below;
Answer:
3 and 9
if f(x)=x^2+13 and g(x)=12x-14
Step-by-step explanation:
So when we are looking for the intersection of two functions, we are trying to figure out when they are the same. When you think same, you should think equal (=).
So we want to find when f(x)=g(x) for x.
f(x)=g(x)
Let's get everything to one side.
Subtracting 12x and adding 14 to both sides.
I'm going to reorder the left hand side and also simplify the 13+14 part:
Now since the coefficent of x^2 is just 1 our job is to find two numbers that multiply to be 27 and add up to be -12.
Those numbers are -3 and -9 since -3(-9)=27 and -3+(-9)=-12.
So the factored form of our equation is
Since the product is 0, then at least one of the factors must be 0.
So we want to solve both x-3=0 and x-9=0.
x-3=0 can be solved by adding 3 on both sides. This gives us x=3.
x-9=9 can be solved by adding 9 on both sides. This gives us x=9.
The intersection of f and g happens at x=3 or x=9.
Answer: 7 years
Step-by-step explanation:
let x be the age of Mary
so John's age will be 2x
the equation becomes
2x+x=21
3x=21
x=21/3
x=7
The answer is easy it is 25