The ordered pair answer is (4,0).
This is false. If we assumed the prime numbers were closed under subtraction, then the difference of any two primes would also get us a prime number.
Take the prime numbers 11 and 7. Their difference, 11 - 7, is 4, but 4 is composite, as it has 2 as a factor other than 1 and 4. All we need is this one counterexample to prove that prime numbers are <em>not </em>closed under subtraction.
Answer:
at least 123 feet
Step-by-step explanation:
Using the given formula, we have ...
A = bh
3800 = b(b/4) . . . . substituting the given information
15200 = b^2
b = √15200 ≈ 123
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The base of a parallelogram is not necessarily the longest side, regardless of height. Since the base is 123 feet, we can only say that the longest side is no shorter than 123 feet.
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