A quadratic in vertex form reads as
(<em>x</em> - <em>a</em>)² + <em>b</em>
where (<em>a</em>, <em>b</em>) is the vertex.
To get the given quadratic in this form, complete the square:
<em>x</em>² - 6<em>x</em> - 40 = <em>x</em>² - 6<em>x</em> + 9 - 49 = (<em>x</em> - 3)² - 49
Or, work backwards by expanding the vertex form and solving for <em>a</em> and <em>b</em> :
(<em>x</em> - <em>a</em>)² + <em>b</em> = <em>x</em>² - 2<em>ax</em> + <em>a</em>² + <em>b</em>
So if
<em>x</em>² - 6<em>x</em> - 40 = <em>x</em>² - 2<em>ax</em> + <em>a</em>² + <em>b</em>,
then
-2<em>a</em> = -6 → <em>a</em> = 3
<em>a</em>² + <em>b</em> = -40 → <em>b</em> = -49
not totally sure what you mean by explain the mean of 0, however
250 attendees = +250 from zero
loses 7 = -7 from zero
Deposit 55 = + 55 from zero
Drop 9 = -9 from zero
Austin = +425 from zero
Answer:
-6n + 8
Step-by-step explanation:
-8n + 2n = -6n
11 - 3 = 8
Hope this helps :)
Supplementary angles add up to 180° so subtract 60 from 180 and you get 120°. The measurement of the second angle is 120<span>°
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Answer:
or 0.375
Step-by-step explanation:
The absolute value of a number is how far that number is away of zero.
