A number n is less than or equal to -7 or greater than 12.

Mathematics

2 answers:

Alla [95]2 years ago

8 0

-7 > n > 12
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> that means put a line under the symbol :)
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olga55 [171]2 years ago

3 0

-7>=n>12
(can't do the greater than or equal to sign)

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We know that
speed=distance/time
solve for time
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in this problem
Marco runs at a rate of 6 miles per hour.
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so
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the answer is
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Alternative Method
Let
x---------> Fernando's distance when Marco is 0.3 miles apart

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for distance =x
time=x/7.2------> equation 1

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time=(x-0.30)/6------> equation 2

equate equation 1 and equation 2
7.2*(x-0.3)=6x-----> 7.2x-2.16=6x
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