Problems 76 − 85 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam. Ethan has $ 60 , 000 to invest. He puts part of the money in a CD that earns 3 % simple interest per year and the rest in a mutual fund that earns 8% simple interest per year. How much did he invest in each if his earned interest the first year was $ 3700 ?
Problems 76 − 85 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam. Ethan has $ 60 , 000 to invest. He puts part of the money in a CD that earns 3 % simple interest per year and the rest in a mutual fund that earns 8% simple interest per year. How much did he invest in each if his earned interest the first year was $ 3700 ?
Solution Summary: The author calculates the amount invested by Ethan in CD and mutual fund so that his earned interest in the first year was 3700.
Problems
76
−
85
are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Ethan has
$
60
,
000
to invest. He puts part of the money in a CD that earns
3
%
simple interest per year and the rest in a mutual fund that earns 8% simple interest per year. How much did he invest in each if his earned interest the first year was
$
3700
?
A 20 foot ladder rests on level ground; its head (top) is against a vertical wall. The bottom of the ladder begins by being 12 feet from the wall but begins moving away at the rate of 0.1 feet per second. At what rate is the top of the ladder slipping down the wall? You may use a calculator.
Explain the focus and reasons for establishment of 12.4.1(root test) and 12.4.2(ratio test)
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