B and C because sqrt of 16=4 so sqrt of anything larger than 16 is greater than 4
-6.3 into a fraction is -6 and 3/10. its a mixed number!
Please elaborate more on your question so I can help you
Unknown = x
the quotient of x and 12 is x/12 than 49 more than that is 53,
(x/12)+49=53, now use basic math and solve
-49 from both side,
x/12=4
*12 to both side,
x=48
therefore the unknown number is 48
