first, I would round down/up 21.25 to just 21, 19.89 to 20, and 6.52 to 7. then add up 21+20=41, 41+7=48 so 48 is the answer
Answer:
12.75
Step-by-step explanation:
c = π x d
40.035= 3.14 x d
40.035/3.14 = 12.75
Answer:
No solution exist
Step-by-step explanation:
8(j-4) = 2(4j-15)
8j - 32 = 8j - 30
-32 = -30
which is wrong, so either solution does not exist or equation is wrong
Answer:
460
Step-by-step explanation: multiply all numbers to get your answer
Answer: i
Step-by-step explanation:
It is imaginary, since if you try squaring numbers, ex: -1, 1,0,2 you always get a number bigger or equal to 0.
For years mathematicans argued weather the square root of -1 (or any negative number) should exist.
Then one day, a mathematician proposed a soulution, the square root of -1 could be i. Everyone liked that and so now the square root of -1 is i