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Reil [10]
3 years ago
5

A hyena can run 1/4 of a mile in 22.5 seconds. At this rate, which equation can be used to determine how fast a hyena runs in mi

les per hour?
Mathematics
1 answer:
Paul [167]3 years ago
6 0
So if it runs 1/4 of a mile in 22.5 seconds, we can work out that it runs 0.01111 miles in a second, therefore:

0.01111x60x60 = 40 miles per hour.

Hope I helped!
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Which polynomial identity will prove that 19 = 27 − 8?
3241004551 [841]
The answer is Difference of Cubes.

Difference of cubes is a³ - b³.
27 can be written as 3³ (= 3 × 3 × 3 = 27). So, a = 3.
8 can be written as 2³ (= 2 × 2 × 2 = 8). So, b = 2.

Difference of cubes can be expressed as:
       a³ - b³ = (a - b)(a² + ab + b²)
⇒   3³ - 2³ = (3 - 2)(3² + 3×2 + 2²) = 1 × (9 + 6 + 4) = 1 × 19 = 19
⇒  27 -  8  = 19


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3 years ago
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       1 gallon  =  128 fl oz
and      
       1 day  =  24 hours. 
    
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