Years = natural log (total / principal) / rate
Years = ln (78,900 / 39,450) / .032
Years = ln (2) / .032
Years = 0.69314718056 / .032
Years =
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21.6608493925
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And here's a calculator to check that answer:
http://www.1728.org/compint.htm
Answer:
If my calculations are correct then it should be 1 and 1/2
Answer:$33.41
Step-by-step explanation:
I converted the percentages to decimals and subtracted them from 1.
(Btw x stands for the cost before tip and tax)
This was the equation I came up with based on what was given to me;
57.29 = (1-0.085)x + (1-0.2)x
57.29=0.915x + 0.8x
57.29=1.715x
Divide both sides by 1.715 and should get 33.40524781
Since we are rounding to the nearest cent, the answer would be $33.41
Answer:
20
Step-by-step explanation:
16 is 80% of 20
To subtract fractions, we need an lcd( lowest common denominator)
8. the lcd is 42 because it’s the smallest number that 6 and 7 are both factors of. the lcd is the bottom of the fraction
to make the denominator of (4/7) 42, we will multiply the top and bottom by 6 and we get (24/42)
to make the denominator of (3/6) 42, we will multiply the top and bottom by 7 and we get (21/42)
these two numbers now have the same denominator so we subtract them
24/42 - 21/42 = 3/42 which simplifies to 1/14
9. since these fractions already have a common denominator, we will make them mixed fractions
-5(2/7) as a mixed fraction. first multiply 5*7 which is 35. now add 2 which is 37. our mixed fraction is -37/7
-1(5/7) as a mixed fraction. multiple 1*7 which is 7. now add 5 which is 12. our mixed fraction is -12/7
now subtract (-37/7) - (12/7) and we get -49/7 which simplifies to -7
