Question

Evaluate each expression if x is 25, y is -4, and z is -0.2 Answer as a decimal.

x + y =

2x − z =

x + y + z =

y ⋅ x =

Answer 1

Answer:

Step-by-step explanation:First you substitute x,y and z with the numbers given.

X+y =25+(-4) = 21

2x-z=2(25)-(-0.2)=50.2

Remember that +and - = -; -and - = -

x+y+z =25+(-4)+(-0.2)=20.8

y.x=-0.2 ×25= -5

Answer 2

Answer:

x + y = 3.6

2x − z = 1

x + y + z = -3.8

Step-by-step explanation:

x is , y is -4, and z is -0.2.