Answer:
x=3.99 it represents the amount per book
Step-by-step explanation:
3x + 1.50 = 13.47
- 1.50 on both sides
3x= 11.97
Divide 3 on both sides.
x= 3.99
Answer: 196
Step-by-step explanation:

Answer:
y = 4
Step-by-step explanation:
1) Simplify
to 243.

2) Simplify
to 531441.

3) Simplify
to 129140163.
4) Simplify
to 19683.

5) Simplify
to 6561.

6) Convert both sides to the same base.

7) Cancel the base of 9 on both sides.

Cheers,
ROR
The value of the element in row 1, column 1 of matrix x is; y.
<h3>What is the value of the element in row 1, column 1 of matrix x?</h3>
According to the task content, it follows that matrix x is defined as; x= [y 4].
In essence, it follows that the matrix x contains one row and 2 columns. Therefore, the element in row 1, column 1 of matrix x is; y.
Read more on matrix;
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Step-by-step explanation:
In the case of a discrete probability distribution of a random variable X, the mean is equal to the sum over every possible value weighted by the probability of that value; that is, it is computed by taking the product of each possible value x of X and its probability p(x), and then adding all these products together