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11Alexandr11 [23.1K]
3 years ago
12

Need help solving this math problems

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0

1) If <em>x</em> is the number of years Naicul works, then the corporate job would earn him

49600<em>x</em> + 2000

dollars, while the teaching job would earn

50000<em>x</em>

dollars. Solve for <em>x</em> such that these two earnings are equal:

49600<em>x</em> + 2000 = 50000<em>x</em>

400<em>x</em> = 2000

<em>x</em> = 5

2) a) At a speed of 6.7 m/s, DJ would finish the race in

(100 m) / (6.7 m/s) ≈ 14.93 s

2) b) If DJ is given a headstart of <em>y</em> seconds, then Usain finishes the race in (9.58 + <em>y</em>) seconds. Solve for <em>y</em> such that this time matches DJ's time from part (a) :

14.93 s = (9.58 + <em>y</em>) s

<em>y</em> ≈ 5.35 s

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