AWNSER: $90.75
Shelly earns $90.75 in compound interest after 3 years. All together she has $695.75.
Shelly earns $90.75 in compound interest after 3 years. All together she has $695.75.
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1 answer:
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Let's call the numerator . Since the denominator is four more than three times the numerator, it means that it equals
. So, the original fraction is
Note that this implies that , otherwise the denominator would be zero. Now, we need to increase both numerator and denominator by 4, obtaining this new fraction:
Note that this implies that , otherwise the denominator would be zero. And we know that this equals 925 (assuming that 925925 is some kind of typo/formatting error). This leads to the equation
Since we assumed that the denominator is not zero, we can multiply both sides by it, so that the equation becomes
Subtract 4 from both sides to get
Subtract 2775x from both sides to get
Finally, divide both sides by -2774 to get
⇒
⇒
⇒ ; sin(x) ≠ 0, cos(x) ≠ 0
⇒ ; sin(x) ≠ 0, cos(x) ≠ 0
⇒
Use the Unit Circle to determine when
Answer: 45° and 315°