Answer:
21. An= 100 (2)^n-1
22. $51,200
23. n= 15
Step-by-step explanation:
21. 100, 200, 400, 800, 1600...
An= A r ^n-1
22. a10= 100(2)^10-1
a10= 100(2)^9
23. n=14
a14= 100(2)^14-1= 819200
n= 15
a15= 100(2)^15-1= 1638400
Answer:
here it is I hope it helps
Step-by-step explanation:
verified
You have to find out what 15% of $78 dollars is. If you have to do this in your head and not on a calculator you can find 10%, then cut that number in 1/2 and add it to the answer. So 10% of $78 is 7.8 so $7.80. You can divide 7.80 by 2 and get 3.9 and add that to 7.8 which is 11.70. So 15% of $78 is $11.70.
Answer:
2 units
Step-by-step explanation:
It's because the only whole number factor pair to 10 is 2x5 and luckily, it turned out that 5-3=2, so there are no decimals or fractions.
An easy way for me to do this is to either make all of the fractions into decimals or all the decimals into fractions, whatever you prefer. I prefer fractions, but for typing reasons I’m going to make them all decimals. Making 5/48 into a decimal you divide 5 by 48 and get 0.104... and divide 3 by 16 and get 0.1875. Then from there, look at whatever tenths place number is the least (the number after the decimal). Two of them have one, so moving onto the next number, 8>0, which means 0.104 is less then 0.1875. Then 5<7. So from least to greatest, 5/48 (0.104), 3/16 (0.1875), 0.5, 0.75.
Good Luck!
