Answer:
- $12,000 at 4%
- $9,000 at 2%
Step-by-step explanation:
If x represents the amount invested at 4%, then the total interest earned is ...
0.04x + 0.02(21000 -x) = 660
0.02x = 240 . . . . . . . . . . . simplify, subtract 420
x= 240/0.02 = 12,000 . . . . amount invested at 4%
21,000 -x = 9,000 . . . . . . . . amount invested at 2%
The amount invested at 2% is $9,000.
The amount invested at 4% is $12,000.
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<em>Comment on method of solution</em>
These problems can usually be solved using one variable for the amount associated with the highest contribution to the mix. Here, that is the amount getting 4% interest. This keeps the numbers in the solution positive, helping to minimize errors. As you can see, the solution develops in about 2 or 3 steps. Other methods can take longer.
Answer:
true
Step-by-step explanation: In a concave polygon, each interior angle is less than 180°.
Answer:
8
Step-by-step explanation:
Answer are: 90, 232, 18 and 98
the answer is defintly <u>NOT B. </u> the ANSWER is A
Answer: A it makes the most since. there will be a paragragh ubove the question the first sentice gives you the answer: “Remember only that Philip is our enemy, that he has long been robbing and insulting us...
answer: Philip robbed and insulted them.
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