Answer: Choice D. ![6.44 \times 10^{-4}](https://tex.z-dn.net/?f=6.44%20%5Ctimes%2010%5E%7B-4%7D)
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Work Shown:
We multiply the coefficients 9.2 and 7 to get 64.4, which is the same as 6.44*10^1 in scientific notation. When multiplying exponential expressions with the same base, we add the exponents
This is what the steps could look like
![\left(9.2 \times 10^{-9}\right)\times\left(7 \times 10^{4}\right)\\\\\left(9.2\times7\right)\times\left(10^{-9} \times 10^{4}\right)\\\\\left(64.4\right)\times\left(10^{-9+4}\right)\\\\\left(6.44\times 10^{1}\right)\times\left(10^{-5}\right)\\\\6.44\times\left(10^{1}\times 10^{-5}\right)\\\\6.44\times\left(10^{1+(-5)}\right)\\\\6.44\times 10^{-4}\\\\](https://tex.z-dn.net/?f=%5Cleft%289.2%20%5Ctimes%2010%5E%7B-9%7D%5Cright%29%5Ctimes%5Cleft%287%20%5Ctimes%2010%5E%7B4%7D%5Cright%29%5C%5C%5C%5C%5Cleft%289.2%5Ctimes7%5Cright%29%5Ctimes%5Cleft%2810%5E%7B-9%7D%20%5Ctimes%2010%5E%7B4%7D%5Cright%29%5C%5C%5C%5C%5Cleft%2864.4%5Cright%29%5Ctimes%5Cleft%2810%5E%7B-9%2B4%7D%5Cright%29%5C%5C%5C%5C%5Cleft%286.44%5Ctimes%2010%5E%7B1%7D%5Cright%29%5Ctimes%5Cleft%2810%5E%7B-5%7D%5Cright%29%5C%5C%5C%5C6.44%5Ctimes%5Cleft%2810%5E%7B1%7D%5Ctimes%2010%5E%7B-5%7D%5Cright%29%5C%5C%5C%5C6.44%5Ctimes%5Cleft%2810%5E%7B1%2B%28-5%29%7D%5Cright%29%5C%5C%5C%5C6.44%5Ctimes%2010%5E%7B-4%7D%5C%5C%5C%5C)
The final result is in scientific notation as the coefficient c is restricted such that ![0 \le c < 10](https://tex.z-dn.net/?f=0%20%5Cle%20c%20%3C%2010)
Answer: Brand B is
Explanation
(Brand A)24 diapers is 0.29¢ per diaper
(Brand B) 50 diapers is 0.27¢ per diaper
To equal the step 2, we would have to determine that 20 was our new denominator and multiply the first fraction by 5, the second by 4 and the 2 by 20.
multiplied by sides of the equation by 20
I think it’s B
Hopefully this helps!!
Answer:
36 sqaured feet
Step-by-step explanation:
24 plus 12 i believe?