A jet flies at a rate of 1.3 x 10^ 6 feet per hour. Written in scientific notation, which is the best estimate of how many feet
the jet will travel in 2.8 x 10^ 3 hours?
2 answers:
(1.3 * 10^6)(2.8 * 10^3) = (1.3 * 2.8) = 3.64.....(10^6 * 10*3) = 10^9
3.64 * 10^9 <==
(1.3X10^6ft/hr)(2.8X10^3hr)
(1.3*2.8)(10^6*10^3)
Rule (a^b)(a^c)=a^(b+c)
(3.64)(10^(6+3))
3.64(10^9)
3.64X10^9 ft
Technically we only had two significant figures and the answer should be:
3.6X10^9 if we were to express our answer to the correct number of significant figures....
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