Answer:
7x(3-5a)
Step-by-step explanation:
21-35a =
to find a minimum common multiply you have to rationalize the number with the same numer, and this number must be a whole, this will help you to write the expression easier, if you notice that 21 and 35 are familiar of 7, then you can find a common factor, to multiply your expression
The second option is the answer
That is the answer for the first one
Answer:
38.5ft²
Step-by-step explanation:
we know the formula for Area is
A=pi*r²
A=38.5
