Question

Evaluate the expression for (x = 1/2) and (y = -5):

(-2xy)
a) 5

b) 10

c) -5

d) -10

Answer 1

The expression (-2xy) evaluated with x = 1/2 and y = -5 results in 5 when following the order of operations and considering the signs of the numbers involved.

Step-by-step explanation:

To evaluate the expression (-2xy) for x = 1/2 and y = -5, we substitute the given values into the expression:

-2 * (1/2) * (-5)

Firstly, we multiply -2 by 1/2:

-2 * 1/2 = -1

Next, we multiply -1 by -5:

-1 * -5 = 5

Therefore, the result of evaluating the expression (-2xy) for x = 1/2 and y = -5 is 5, which corresponds to option (a).