I'm confused........
2 answers:
Answer:
all i can think of would be 10 to the power of a negative number
Step-by-step explanation:
example: say n = 5 and the exponent is -2
.05 = 1/20
as long as there is an equal amount or more negative numbers than digits of the original number.
like would be 5
this is all i can come up with the given info.
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Let u be speed while Lisa drove 240 miles and t be the time in completing 240 miles.
We have been given that Lisa increased her speed 20 mph than initial speed over next 540 miles. So her speed on next 540 miles will be mph.
Further more we are given that she took 3 hours more to complete the next 540 miles of the trip than she took in completing initial 240 miles. So she took hours in completing next 540 miles.
Since we know
Now we will substitute our given values in our equation and find out the unknowns. After substitution we will get two equations and two unknowns.
Now we will substitute equation 1 in equation 2
Upon solving this equation, we get
Therefore, total time for Lisa to complete the entire trip is 6+6+3 = 15 hours.
And we know that total distance covered is 240+540 = 780 miles
Hence, average speed