Question
Here is the question : IF X = 5 AND Y = 7, WHAT DOES 2XY EQUAL?
Option
Here is the option for the question :
- 7
- 50
- 70
- 570
The Answer:
And, the answer for the the question is :
Explanation:
In algebra, many different variables, which are typically represented by letters like x and y and have no value of their own, are utilized. If x is equal to five and y is seven, then you can solve for 2xy by multiplying two times five times seven to get the answer seventy.
In mathematics, it is often necessary to solve equations and perform calculations in order to obtain a solution or answer. One common type of calculation involves the use of variables and numerical values, which can be combined using mathematical operations such as addition, subtraction, multiplication, and division. In this case, we are given two variables, x and y, and asked to calculate the value of the expression 2xy when x equals 5 and y equals 7.
To begin, we can substitute the given values for x and y into the expression 2xy. This gives us:
2(5)(7) = 70
Therefore, when x equals 5 and y equals 7, the value of 2xy is 70.
It is important to note that the order of operations, also known as the PEMDAS rule, must be followed when performing calculations like this. PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). In the expression 2xy, the multiplication of 2, x, and y must be performed before any addition or subtraction can take place.
Additionally, it is important to understand the concept of variables in mathematics. A variable is a symbol that represents a value or quantity that can change or vary. In this case, x and y are variables that can take on different values depending on the context of the problem. By using variables, we can write equations and expressions that can be easily adapted to different situations and scenarios.
solving mathematical equations and performing calculations using variables and numerical values is an important skill in mathematics. By following the order of operations and understanding the concept of variables, we can accurately and efficiently solve problems like the one presented here, where we were asked to calculate the value of 2xy when x equals 5 and y equals 7. The answer is 70.