5 x 10 to the 9th power is equal to 5 billion. When you multiply 5 by 10 raised to the 9th power, you are essentially multiplying 5 by 1 followed by 9 zeros. This results in a large number that is commonly expressed in scientific notation as 5 x 10^9.
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(5x10)9
=1.953125 E15
this means it is a very larger number the decimal is 15 places to the right aka to large for an average calculator
1,500,000,000
It is: 500,000,000
(5)21 x (4)11 = (5)11 x (5)10 x (4)11 = (5)10 x (5 x 4)11 = (5)10 x (20)11 =(5)10 x 20 x (20)10 = 20 x (5 x 20)10 = 20 x (100)10 = 2 x (10)1 x (10)20 =2 x (10)21 = 2,000,000,000,000,000,000,000
2.8 x 109 = 2,800,000,000
10 to the 0 power is 10 and 5 to the 0 power is 5 so 10 multiplied by 5 equals 50.