Which fraction has a terminating decimal as it’s decimal expansion? A.1/3 B.1/5 C.1/7 D.1/9

B

Step-by-step explanation:

Let's turn these fractions into decimals.

A: 1/3 = 0.333333

B: 1/5 = 0.2

C: 1/7 = 0.142857143142

D: 1/9 = 0.1111111

As you can see, the only decimal expansion that terminates, or has a finite number of digits after the decimal point, is 1/5.

final total: 63

step-by-step explanation:

60 times sales tax

60 times 0.05

3

60 + 3

63

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?