Answer:
The sum of the digit of the product is 13
Step-by-step explanation:
Given

Solving (a): The product


Solving (b): The sum of the digits


Percent decrease=decrease/original times 100
decrease=23.5-21.2=2.3
original=23.5
percent decrease=2.3/23.5 times 100=0.0978 times 100=9.8%
B is answer
Answer:
You invested $5000 between two accounts paying 2% and 4% annual interest, respectively. If the total interest earned for the year was $160, how much was invested at each rate? $ was invested at 2% and was invested at 4%.
1.SA=10e^2
rectacgular prism=2e*e*e
cube=e*e*e
the length given is 2e=5
so
SA=5e^2
SA=125cm2