Step-by-step explanation:
Given

Simplify : 30 – 5(15 - 10).
Apply BODMAS :
B- Brackets
O-Of
D-Division
M-Multiplication
A-Adition
S-Subtraction

Answer : D) 5
C. 496 is the perfect number
Answer:
The standard form of is 0.0000002
Step-by-step explanation: