A credit card had an APR of 18.42% all of last year and compounded interest daily. What was the credit card's effective interest
2 answers:
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<em><u>The number 0.000000016 is expressed in scientific notation is:</u></em>
<em><u>Solution:</u></em>
Given that,
Charlie learns that a computer processor can perform one command in approximately 0.000000016 nanoseconds
We have to express in scientific notation
<em><u>Step 1:</u></em>
Given number is:
0.000000016
Move the decimal point in 0.000000016 until there is only one non-zero digit to the left of the decimal point
Here,
Move the decimal 8 places to the right to get 1.6
We have moved the decimal to left, therefore, exponent is negative
Thus the given number is expressed in scientific notation
Answer and Explanation:
Given : A store sells different kinds of candy at $1, $1.50, $2, and $3 per kilogram.
To find : How many kilograms of each kind of candy does $3 buy?
Explain why the price of 1 kg and the amount of candy that $3 can buy are inversely proportional quantities?
Solution :
The total amount spent on buying candies is $3.
A store sells different kinds of candy at $1, $1.50, $2, and $3 per kilogram.
When the cost of candies is $1 per kg.
Amount of candies bought is
When the cost of candies is $1.50 per kg.
Amount of candies bought is
When the cost of candies is $2 per kg.
Amount of candies bought is
When the cost of candies is $3 per kg.
Amount of candies bought is
The amount spent on candies is constant.
The difference in the unit price of candies = 3-2=1
The difference in the amount of candies = 1-1.5=-0.5
The negative sign indicates the inverse proportionality.
<span>A marathon is 26.2 miles which mean the distance = 26.2 miles
</span>
Sally ran a marathon in 3 hours and 3 minutes which mean the time taken to finish the marathon = 3 hours and 3 minutes
∴ distance = 26.2 miles
time = 3 hours and 3 minutes = 3 + 3/60 = 3.05 hours
∴ <span>the approximate pace = speed =
</span>
∴ <span>the approximate pace = 26.2/3.05 ≈ 8.59 miles per hour
</span>
∴ The answer is <span>her approximate pace = 8.59 mile/h
</span>
</span>
Sally ran a marathon in 3 hours and 3 minutes which mean the time taken to finish the marathon = 3 hours and 3 minutes
∴ distance = 26.2 miles
time = 3 hours and 3 minutes = 3 + 3/60 = 3.05 hours
∴ <span>the approximate pace = speed =
</span>
∴ <span>the approximate pace = 26.2/3.05 ≈ 8.59 miles per hour
</span>
∴ The answer is <span>her approximate pace = 8.59 mile/h
</span>