(35/100)*42= 14.7 days.
This principle apples to all form conversion that requires finding a percentage of a number.
The changed digit is the third to the left of the decimal point, so is in the hundreds place.
The value of 8 hundred is 5 hundred more than the value of 3 hundred. The second number is 500 more than the first.
Answer:
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Step-by-step explanation:
The answer can be readily calculated using a single variable, x:
Let x = the amount being invested at an annual rate of 10%
Let (8000 - x) = the amount being invested at an annual rate of 12%
The problem is then stated as:
(x * 0.10) + ((8000 - x) * 0.12) = 900
0.10(x) + ((8000 * 0.12) - 0.12(x)) = 900
0.10(x) + 960 - 0.12(x) = 900
0.10(x) - 0.12(x) = 900 - 960
-0.02(x) = -60
-0.02(x) * -100/2 = -60 * -100/2
x = 6000 / 2
x = 3000
Thus, $3,000 is invested at 10% = $300 annually; and $8,000 - $3,000 = $5,000 invested at 12% = $600 annually, which sum to $900 annual investment.
Find the equation of the inverse.
we have
step 1
Exchange the variables
x for y and y for x
step 2
Isolate the variable y
apply log both sides
step 3
Let
therefore
the inverse function is
