Answer:
I need the question first then I can help you I am pretty good with rounding
Step-by-step explanation:
Lets get started :)
a) m(x) = (x - 5)(3 + 2x) - x² + 25
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Open Brackets
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= (x × 3) + (x × 2x) + (-5 × 3) + (-5 × 2x) - x² + 25
= 3x + 2x² - 15 - 10x - x² + 25 (Bring like-terms together in descending power order)
= 2x² - x² + 3x - 10x - 15 + 25
= x² - 7x + 10
b) In x² - 7x + 10, -7 is the sum and + 10 is the product
- 2 + - 5 = -7
- 2 × -5 = 10
So the factor of x² - 7x +10 is:
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(x - 2)(x - 5)
Solving ( x - 2 )( x - 5 ) = 0
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x - 2 = 0 | x - 5 = 0
x = 2 | x = 5
Answer:
1/3
Step-by-step explanation:
The average rate of change of a function f(x) on an interval [a, b] is given by the formula ...
rate of change = (f(b) -f(a))/(b -a)
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For the given function and interval, this is ...
(log₂(4·8) -log₂(4·2))/(8 -2) = (5 -3)/(6) = 1/3
The average rate of change is 1/3.
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In the attached graph, the line between the points at the ends of the interval can be seen to have a rise of 1 for a run of 3. Its slope is 1/3.
Answer:2/3
Step-by-step explanation:
look at the point (0,2) and the point (3,4) to get from (0,2) to (3,4) you go up two to the right 3, and that's is your sope 2/3