Question

Evaluate each expression if x is LaTeX: \frac{2}{5}2 5, y is -4, and z is -0.2.

x+y

2x−z

x+y+z

y⋅x

Answer 1

Explanation:

Answer 2

x + y = - 3.6

2x - z = 1

x + y + z = - 3.8

y - x = - 4.4

Explanation:

We have to evaluate the given expressions of x, y, and z where,
`x = (2)/(5) = 0.4`, y = - 4 and z = - 0.2.

So, x + y = 0.4 + (- 4) = - 3.6

And, 2x - z = 2(0.4) - (- 0.2) = 1

And, x + y + z = 0.4 - 4 - 0.2 = - 3.8

Finally, y - x = - 4 - 0.4 = - 4.4 (Answer)