42/3 = 14
I think the unit rate is $14.
I hope this helps! :D
John's effective annual rate is about
(1 +.0576/4)^4 -1 ≈ 5.8856%
According to the "rule of 72", John's money will have doubled in
72/5.8856 = 12.23 years
John's balance will be $4500 in 1989.
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Since you're only concerned with the year (not the month), you don't actually need to determine the effective annual rate. The given rate of 5.76% will tell you 72/5.76 = 12.5 years. The actual doubling time is closer to 12.12 years, so using the effective rate gives results that are closer, but "good enough" is good enough in this case.
To find out what's the weight missing we must subtract the expected weight from the actual weight.
The expected weight is 140kg, the actual weight is 132kg and 9 hectograms, remember that 1 hectogram 0.1kg, then 9 hectogram is 0.9. Then the actual weight is 132.9kg.
The weight of the missing equipment will be
The weight of the missing equipment is 7.1 kg
It is a square room; so, first take the square of the area measure.
<span>√(196x^12y^10z^6) = 14x^6y^5z^3 </span>
<span>That result is the length of one side of the room; so, just multiply </span>
<span>that result by 4 to find perimeter. </span>
<span>14x^6y^5z^3 •4 = 56x^6y^5z^3| feet</span>
