Question

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

-1.88

-18.8

18.8

1.88

Answer 1

answer: 1.88

Explanation:

if X=4.7 and if Y=0.2 then the expression should look like this.

-2 × -4.7 × 0.2 = -1.88

the value that x and y was assigned will be used in the expression for instance if I said Y is equal to 5 then that means that Y and 5 is used to replace Y in the equation.

Example:

X•Y= ?

when

Y=5

and

X=4

that means.

4•5=20

.

Answer 2

d) 1.88

Explanation:

Given that,

→ x = -4.7

→ y = 0.2

The given expression is,

→ -2xy

Now the required value is,

→ -2xy

→ -2(-4.7) × 0.2

→ 9.4 × 0.2 = 1.88

Hence, the value is 1.88.