Answer:
A=14cm²
Step-by-step explanation:
A=hbb
2=7·4
2=14cm²
Answer:

Hence, ption B is true.
Step-by-step explanation:
Given the expression

solving the expression

as


so the expression becomes

Group like terms

Add similar elements

Therefore, we conclude that:

Hence, option B is true.
Answer:
A
Step-by-step explanation:
Because it is a random sample
Answer:
The answer is the fourth one!
=7c^2d-7c+4d-10