Question

The value of the expression -2 xy for x = -4.7 and y = 0.2 is _____.

-18.8
18.8
1.88
-1.88

Answer 1

The value of the expression -2xy for x = -4.7 and y = 0.2 is 1.88. Thus option number 3 is correct.

Solution:

We have been given an expression that is -2xy and have been asked to find its value for the given values of x and y

The given values of x and y are -4.7 and 0.2 respectively.

To find the value of the expression for the given values of x and y we substitute the values of x and y in the given expression and solve it as follows:

Given expression = -2xy

`\begin{array}{l}{=-2(-4.7)(0.2)} \\\\ {=9.4 * 0.2} \\\\ {=1.88}\end{array}`

Hence the option number 3 is correct.