Answer:
a)
Step-by-step explanation:
Answer:
Rational:-5, 2/3, 0.5, sqrt 16
Irrational: sqrt 11, pi
Step-by-step explanation:
A rational number is a number which can be represented as a ratio or fraction and whose decimal is terminating or repeating. This includes all whole numbers positive and negative too.
Ex. -5, 2/3, 0.5, sqrt 16
An irrational number is a number that CANNOT be represented as a ratio or fraction and whose decimal is NOT terminating or repeating. These often include square roots and numbers like pi.
Ex. sqrt 11, pi
600 ml + 400 ml = 1000 ml
1000 mililiters = 1 liters
Answer: 1 lt
Answer: f(x) = 100x + 500
Explanation:
The original price when Mr. Razali bought the laptop was $2500
Working backwards to solve the problem
If Mr. Azmi lost 20% when he sold the laptop for 2400, that means that he sold it for 80% of what he paid. If 2400 is 80% of what he paid, then to find out what he paid for it you would use this equation to determine what 100% would be:

cross multiply to get:
240000 = 80x
3000 = x
Mr. Azmi bought the laptop for $3000
Mr. Razali sold the laptop for a profit of 20%, which means he sold it for 120% of what he paid for it. To determine how much he bought it for we would use this equation:

cross multiply to get:
120x = 300000
x = 2500
Mr. Razali initially bought the laptop for $2500