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ycow [4]
3 years ago
8

Ken is driving 75 mph. How far will he drive in three hours and 15 minutes

Mathematics
2 answers:
SIZIF [17.4K]3 years ago
5 0
243.75 miles
75 x 3.25= 243.75
tekilochka [14]3 years ago
5 0
Ken will drive 243.75 miles
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Please need help on this
Trava [24]

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How do you do number 1?<br>Whenever I tried to answer it, I always get fraction. help me.​
Flura [38]

Answer:

The pairs are (13,15) and (-15,-13).

Step-by-step explanation:

If n is an odd integer, the very next odd integer will be n+2.

n+1 is even (so we aren't using this number)

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This means

(n)^2+(n+2)^2=394

n^2+(n+2)(n+2)=394

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2n^2+4n+4=394

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Divide both sides by 2:

n^2+2n-195=0

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So the factored form is

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n+15=0

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n=-15

n-13=0

Add 13 on both sides:

n=13

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If n=-15, then n+2=-13.

Let's check both results

(n,n+2)=(13,15)

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(-15)^2+(-13)^2=225+169=394.  So (-15,-13) looks good!

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6 + 2n > 12    |subtract 6 from both sides

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