Answer:
the answer is a i just took the quiz hope it helpss
Step-by-step explanation:
A. If a rice costs $1.33 per kilogram, then 1.3 kg will cost 1.33 * 1.3 = 1.729. We can round it $1.73.
B. If a milk costs $0.71 per liter, with $3.00 you can buy 3 / 0.71 = 4.22 liters (after rounding to the hundredth).
C. In (A) we have cost of standard amount and an information how many of rice we want to buy. We find it by multiplying. In (B) we have cost of standard amount and an information about how much money do we have. We find it by dividing.
After clarification we see the respective diameters are
![A = 2.3 \times 10^{-a}](https://tex.z-dn.net/?f=A%20%3D%202.3%20%5Ctimes%2010%5E%7B-a%7D)
![B = 2.3 \times 10^{-b}](https://tex.z-dn.net/?f=B%20%3D%202.3%20%5Ctimes%2010%5E%7B-b%7D)
We're asked about the ratio
![A:B = 2.3 \times 10^{-a} : 2.3 \times 10^{-b} = 10^{-a} : 10^{-b} = 10^b : 10^a = 10^{b-a} : 1](https://tex.z-dn.net/?f=A%3AB%20%3D%20%202.3%20%5Ctimes%2010%5E%7B-a%7D%20%3A%20%202.3%20%5Ctimes%2010%5E%7B-b%7D%20%3D%2010%5E%7B-a%7D%20%3A%2010%5E%7B-b%7D%20%3D%2010%5Eb%20%3A%2010%5Ea%20%3D%2010%5E%7Bb-a%7D%20%3A%201)
Now we can go through the choices.
A. If a = 4 and b = 6, then cell a is 100 times greater than cell b.
![A:B=10^{6-4}:1 = 100:1](https://tex.z-dn.net/?f=%20A%3AB%3D10%5E%7B6-4%7D%3A1%20%3D%20100%3A1)
It would be more proper to say the diameter of cell A is 100 times the diameter of cell B, but yes, this is TRUE.
B. If a = 4 and b = 6, then cell b is 100 times greater than cell a.
FALSE. 10 to the minus 4 is 100 times bigger than 10 to the minus 6, so a is bigger.
C. If a = 4 and b = 6, then cell a is 2 times greater than cell b.
FALSE. We already calculated its 100 times bigger.
D. If a = 4 and b = 6, then cell b is 2 times greater than cell a.
FALSE.
Answer:
look it up
Step-by-step explanation: