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Dmitry [639]
3 years ago
10

Please help answer correctly !!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!

Mathematics
1 answer:
ololo11 [35]3 years ago
6 0
I believe that the answer is 8 but I’m not 100%
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Please help me with these. These are so hard.<br><br>​
LuckyWell [14K]

\bf \textit{difference and sum of cubes} \\\\ a^3+b^3 = (a+b)(a^2-ab+b^2) ~\hfill a^3-b^3 = (a-b)(a^2+ab+b^2) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \boxed{a^6+b^6}\implies a^{2\cdot 3}+b^{2\cdot 3}\implies (a^2)^3+(b^2)^3 \\[2em] [a^2+b^2] [(a^2)^2-a^2b^2+(b^2)^2]\implies \boxed{(a^2+b^2)(a^4-a^2b^2+b^4)}

about the second one... well, is a "fait accompli" that using the pythagorean theorem, if x = 8 and y = 5, the hypotenuse must be √(8² + 5²) = √(89), which is neither of those choices.

5, 8, 13 are no dice, namely 5² + 8² ≠ 13

25, 64, 17 is are no dice too, because 25² + 17² ≠ 64²

however, 5,12 and 13 are indeed a pythagorean triple

also is 39, 80, 89.

when looking for a pythagorean triple, recall that c² = a² + b².

so the longest leg is the sum of the square of the small ones.

so what you'd do is, check the small legs, square them, add them up, if they're indeed a pythagorean triple, they "must" add up to the longest leg.

4 0
3 years ago
What is the value of the expression 2^2 + 4^2 ÷ 2^2? 3 6 8 16
slamgirl [31]
The answer is 8 because you use the order of operations. So it would be 16 divided by 4, then you would do 4+4 which is 8
4 0
3 years ago
. HELP DUE IN A FEW MIN ASAP im stupidssssss
adelina 88 [10]

Answer:

B

Step-by-step explanation:

80*17=1360/choice B

5 0
3 years ago
Fred and Victoria provide the following proofs for vertical angles to be equal:
mart [117]
Answer should be <span>Both Fred's and Victoria's proofs are correct.</span>
8 0
3 years ago
Read 2 more answers
What is the volume of the pyramid in the diagram?
Jlenok [28]
The volume of a pyramid is lwh/3
4 0
3 years ago
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