Answer:
u didnt add the picture
Step-by-step explanation:
The percentage decrease is 60% decrease because it changed by 81 and 81 is 60% of 135
1 mile = 1.6 km
x = 50 × 1.6
x = 80 miles
It's the first one, an algebraic expression contains variables
Answer:
It is an imaginary number.
Step-by-step explanation:
In this example, the real number is -2 is being multiplied by the imaginary unit, i, which i can be also expressed as (√-1).