Answer:
Step-by-step explanation:
Given that in a certain store, there is a .03 probability that the scanned price in the bar code scanner will not match the advertised price.
Here X the number of items that will not match in the sample of 780 items is binomial because
i) there are two outcomes only
ii) Also each trial is independent of the other.
a) the expected number of mismatches

b) Var(x) = 
Std dev (X) = 4.7642
We have been given that the weight of an object on the mars varies directly as the weight of the object on earth.
Let y be weight of an object on Mars and x be weight of an object on Earth.

We have been given that the weight of an object on Mars is 34 pounds and weight of the same object on Earth is 90 pounds.
Putting the given values in equation we get

Therefore, our equation now becomes

Now we have been given that the weight of an object on Earth is 135 pounds and we have to find the weight of the same object on Mars,
We have been given that 
Putting the given values in our equation we get

Therefore weight of the object on Mars will be 51 pounds.
Answer:
{ Pythagorean Theorem}
{Division property of Equality}
sin 0=a/c{definition of sin0)
cos0=b/c{definition of cos0)
{Substitution}
Step-by-step explanation:
I believe the answer is A<span />