Answer:
A should be around 53.13 degrees.
Step-by-step explanation:
For problems like these, use arc sin, cos, or tan (sin^-1, cos^-1, or tan^-1) multiplied by the fraction given in the problem.
Answer:
<30
Step-by-step explanation:
5*10=50
50-20=30
Please mark me brainlest
Answer:
x = 4
Step-by-step explanation:
Answer:
6, 25, 62, 311
Step-by-step explanation:
hope this helps you!
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.