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ICE Princess25 [194]
3 years ago
9

A man travels a distance of 20 miles at 60 miles per hour then returns over the same route at 40 miles per hour. Find the averag

e rate per hour.
A)50
B)48
C)47
D)46
Mathematics
1 answer:
elena55 [62]3 years ago
7 0
Average = (60 miles per hour + 40 miles per hour)/ 2 = 5<span>0 miles per hour
</span><span>average rate per hour = 50

answer
50</span>
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Step-by-step explanation:

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3 years ago
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vaieri [72.5K]

Responder:

<em>a) 1 </em>

<em>b) 12 </em>

<em>c) 3 </em>

<em>d) -1 y 3 </em>

Explicación paso a paso:

Dadas las siguientes ecuaciones;

a) x²-x =0

x² = 0+x

x² = x

x = 1

b) -x²+12x = 0

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x = 12

c) 3x² - 9x = 0

Suma 9x a ambos lados

3x²-9x+9x = 0+9x

3x² = 9x

3x = 9

x = 9/3

x = 3

d) x²-2x-3 = 0

x²-3x+x-3 = 0

x(x-3)+1(x-3) = 0

(x+1)(x-3) = 0

x+1 = 0 y x-3 = 0

x = -1 y 3

4 0
2 years ago
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salantis [7]

Answer:

11,6

Step-by-step explanation:

Idk if this is correct

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3 years ago
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