Suppose the one's digit is x, the ten's digit is y. the original number is 10y+x, the reversed number is 10x+y
x+y=13
(10x+y)=(10y+x)-9 =>9y-9x=9 =>y-x=1
Add the two equation to solve: 2y=14 =>y=7
x=13-7=6
the original number is 76.
Answer:
x = 
Step-by-step explanation:
According to Pythagorean Theorem, the square value of hypotenuse is equal to sum of square value of two legs:
x^2 + 4^2 = 10^2
x^2 + 16 = 100 subtract 16 from both side
x^2 = 84 find the root of both sides
x = 
The formula for percent of increase/decrease:
difference in original and new/original x 100
17926-12475/12475=
5451/12475=
.4369
x 100=
43.7% increase
The answer is 4700 megabytes.
1 giga = 1000 mega
1 gigabyte = 1000 megabyte
4.7 gigabyte = x megabyte
1 gb : 1000 mb = 4.7 gb : x
x = 1000 mb * 4.7 gb : 1 gb
x = 4700 mb