Answer:
The chance that both are statistics books is 
Step-by-step explanation:
Probability is the greater or lesser possibility of a certain event occurring. In other words, probability establishes a relationship between the number of favorable events and the total number of possible events. Then, the probability of any event A is defined as the quotient between the number of favorable cases (number of cases in which event A may or may not occur) and the total number of possible cases. This is called Laplace's Law.

Combination of n elements taken from k to k is called each of the ways of choosing k different elements from the n of the original set. That is, it is called combinations of m elements taken from k to k to all the possible groupings that can be made with the m elements. It is expressed as:

Remember that the factorial of a positive integer n is defined as the product of all the natural numbers before or equal to it.
A bookcase contains 2 statistics books and 5 biology books. The total number of book is 7.
2 books are chosen at random. The total outcomes can be obtained by selection of two books from seven books which is represented as follows:

The selection of two statistics book from two statistics book is represented as follows:

Then, the probability is:


<u><em>The chance that both are statistics books is </em></u>
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Answer:

Step-by-step explanation:

Answer:
All the sides of a rhombus are equal and opposite sides parallel and equal.
Therefore by understanding the above we can deduce that:
7x - 4 = 5x + 4
7x - 4 + 4 - 5x = 5x + 4 + 4 - 5x (Separate all the terms with x to go to the other side of the equals sign and do the some for the constants).
7x - 5x + (4 - 4) = (5x - 5x) + 4 + 4
7x - 5x = 4 + 4
2x = 8
2x/2 = 8/2
x = 4
Answer:
x > 2
Step-by-step explanation:
Answer:
45 m2
Step-by-step explanation:
It was the only reasonable answer lol
9x5=45