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Sauron [17]
3 years ago
14

X-21. Simplify the given rational expression:x2-4​

Mathematics
1 answer:
castortr0y [4]3 years ago
3 0
X^2-4 = x^2 - 2^2
= (x+2)(x-2)
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Which of the following is not a Pythagorean triple?. . A.. 28, 45, 53. B.. 16, 63, 65. C.. 13, 84, 85. D.. 11, 61, 62.
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A set of numbers is said to be Pythagorean triple if the sum of the squares of the lesser numbers equal the square of the remaining number,

A. 28² + 45² = 2809    ;  53² = 2809     ; EQUAL
B. 16² + 63² = 4225    ;  65²= 4225      ; EQUAL
C. 13² + 84² = 7225    ;  85² = 7225     ; EQUAL
D. 11² + 61² = 3842    ;   62² = 3844     ; NOT EQUAL

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3 years ago
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Smith has 12 cans of dog food. He has two dogs and gives 2/3 can of food to each dog in a day. For how many days will his dog fo
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Answer:

He has food for 9 days.

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3 years ago
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