Answer:
2400sq ft
Step-by-step explanation:
20×2 and 30×2
40×60
2400 sq ft
One
The sum of two rational numbers is always rational. sqrt(9) + sqrt(25) = 3 + 5 which is rational. sqrt(16/100) = 4/10 = 2/5 is also rational. 3/28 is rational as well.
Two
Those are irrational. sqrt(10) + pi = ???? You cannot reduce this to any kind of fraction. Two irrationals always give a rational.
Three
The irrational number controls the answer. 10 + sqrt(5) is irrational. The 10 is OK. It is raional, but sqrt(5) is not a rational number.
1. 4n + 28
2. 30-10x
3. 3m+3n
4. 8+2j
I think it is a D I'm not really sure
