X + 12 = 13
x = 13 - 12
x = 1
The only solution is x = 1
letter B
25 is the answer because of the formula adding and subsequently
The answer is B)Two rectangular pyramids joined at two congruent lateral faces
It’s 15 km. You need to take the root from 9^2 + 12^2 wich equals 15. You need to use pythagoras a^2 + b^= c^2
Example...
4^x = 16
log(4^x) = log(16)
x*log(4) = log(16)
x = log(16) / log(4)
