Explain why the cubed root of -8/27 is -2/3
2 answers:
Answer:
Because the cubed root of the numerator and denominator equals the answer
Step-by-step explanation:
alright, we are trying to understand WHY
You can actually rewrite the first number as
you must look for the number, which three times itself, equals 8...
...and the same thing for the bottom: a number, which three times itself... equals 27.
What number cubed equals 8? The answer is 2
What number cubed equals 27? The answer is 3
...so now we have -2 over 3. You can double check this answer.
we get the original number that we were looking for the cubed root... SUCCESS.
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the answer D) is not correct for sure because the opposite cannot be longer than hypotenuse in the Right Triangle form.
Answer:
(C)
Step-by-step explanation:
In order to find whether the given side lengths form a right triangle or not, we must show that it satisfies the Pythagoras theorem.
A. , 10 and 116
According to Pythagoras theorem,
⇒
⇒
which does not satisfy the condition, therefore these side lengths do not form a right triangle.
B. 3,6 and 8
According to Pythagoras theorem,
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⇒
⇒
which does not satisfy the condition, therefore these side lengths do not form a right triangle.
C. 30, 40 and 50
According to Pythagoras theorem,
⇒
⇒
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which satisfies the condition, therefore theses side lengths form right triangle.