Answered

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Evaluate the expression 0.5a - 2b , when a=-5 and b=2

Sagot :

s1m1

Answer:

-6.5

Step-by-step explanation:

To evaluate the expression we have to substitute a= -5 and b =2.

0.5a - 2b

= 0.5 * (-5) - 2 *2 , first multiply 0.5 *(-5) and 2*2

= -2.5 - 4, subtract (-2.5) and 4

(you can think at this as (- 2.5) +( - 4) because subtraction is just like adding a negative number )

= -6.5

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