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allochka39001 [22]
3 years ago
15

If 5 hours = 40 $

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
6 0

Answer:

7 hours

Step-by-step explanation:

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Simply the rational expression.state any restrictions on the variable. k2-k-2/k2-4k-5
hjlf

We are given

\frac{k^2-k-2}{k^2-4k-5}

Firstly, we will factor numerator and denominator

\frac{k^2-k-2}{k^2-4k-5}=\frac{(k-2)(k+1)}{(k-5)(k+1)}

Restrictions:

we know that denominator can not be zero

so, we can set denominator =0

and solve for k to get restrictions

(k-5)(k+1)=0

k=-1,k=5

Simplification:

\frac{k^2-k-2}{k^2-4k-5}=\frac{(k-2)(k+1)}{(k-5)(k+1)}

we can see that k+1 gets cancelled

so, we get

\frac{k^2-k-2}{k^2-4k-5}=\frac{(k-2)}{(k-5)}..........Answer


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3 years ago
What is the mean of the data set? 300, 222, 285, 310, 345. Round to the nearest tenth.
Llana [10]

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292.4

Step-by-step explanation:

7 0
3 years ago
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Is color preference is a good predictor of condiment preference, and then describe whether condiment preference is a good predic
yawa3891 [41]

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no it is not a color prefernce

Step-by-step explanation:

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There are 18 boys on a football team. Of the team, 1/3 of the boys are 12 years-old. Of the 12 year-olds, 1/3 have never played
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Answer:

1/9

Step-by-step explanation:

1/3 *1/3 = 1/9

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