Answer:
9
Step-by-step explanation:
24 - 6 = 18 divided by 2 is 9 so a must be 9
Answer:
B. 
Step-by-step explanation:
We all suck at math... just lmk if you need more help...
Answer:
This is not a right triangle(No)
Step-by-step explanation:
39 x 5 = (30 x 5) + (9 x 5) = 150 + 45 = 195
He did not change the sign of operation when 28 crossed the equals sign.
I suspect this is what you mean, if let me know
2x(3)^2+x(2)^2
2(3)(9)+3(4)
54+12=66