Answer:
True
Step-by-step explanation:
Answer: True
Technically, you're distributing the expression in parentheses to the one in the other set of parentheses. Or in another way, you're distributing one number to 2 terms, then another, then the opposite way twice.
Answer: option (b) does not form a right triangle
Answer: 40 mg
Unitary method:
For 3kg --> 8mg
For 1kg --> 8/3 mg
For 15kg--> (8/3) * 15
--> 40 mg