Approximately how many times greater is 5×108 than 8×105 ? 62.5 625 6250 625,000

625

Step-by-step explanation:

We have the numbers 5x10^8 and 8x10^5

the relation between them can be obtained by:

(5x10^8)/(8x10^5)

now, we can solve this as:

(5/8)*(10^8/10^5) = (5/8)x10^(8-5) = (5/8)x10^3 = 0.625x10^3 = 625

where we used that:

(a^b)/(a^c) = a^(b-c)

then the correct option is the second one.

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation:

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94