Answer:
B. 
Step-by-step explanation:
Given expression is 
Simplifying the expression now
Lets use distributive property of multiplication to solve it.
As given, 
Distributing -6 with b and 2.
= 
Opening the parenthesis
= 
= 
∴ As from the given options,
is the correct choice.
Answer:
5/12
Step-by-step explanation:
Answer:
A. 8 cm sq
Step-by-step explanation:
Find the scale factor
new width/original width
8/1.6=5
calculate length of original rectangle
new length/scale factor
25/5=5cm
Find area of original rectangle
A=l×w
A=1.6×5=8cm²
You would set it up: .5/100 = x/490 and then cross multiply .5 time 490 and 100 times x, and end up with: 245=100x. divide by 100, and get 2.45