If ED = x + 4 and DB = 3x - 8, find ED, DB, and EB
2 answers:
Answer:
Step-by-step explanation:
By definition, according to this cross-section model, point is the segment bisector of all segments, according to which segments they are in congruence with. Anyway, here is how it is done:
3x - 8 = x + 4
-3x - 3x
_____________
−8 = −2x + 4
-4 - 4
_____________
−12 = −2x
____ ____
−2 −2
[Plug this back into all expressions above to get the measurements of
,
,
]
* Since point the segment bisector, you set the given equations equal to each other, then in the end, plug the x-value back into all expressions to get the length of
.
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To find f'(3) (f prime of 3), you must find f' first. f' is the derivative of the function f(x).
Finding the derivative of f(x) = 2x⁴ requires the use of the power rule.
The power rule for derivatives is . In other words, you bring the exponent forward and multiply it by the coefficient of the term, and then you subtract 1 from the original exponent.
f'(x) = (2x⁴)
f'(x) = 2(4)x³
f'(x) = 8x³
Now, to find f'(3), plug 3 into your derivative.
f'(3) = 8(3)³
f'(3) = 216
<h3>Answer:</h3>f'(3) = 216