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PSAT 1.37 Math Diagnostic. Which of the following forms of the function f(x) would best reveal the number of employees that should be hired to maxi...
PSAT 1.34 Math Diagnostic 186 Views
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Description:
PSAT 1.34 Math Diagnostic. Which of the following equations best represents circle K?
Transcript
- 00:00
Sorry And here's your smoked You sure Brought to you
- 00:04
by the circle k ranch and a dairy farm where
- 00:07
every animal is circle shape It makes milking cows a
- 00:11
real challenge All right check out this craft circle k
- 00:15
is shown in the coordinate plane above Went to the
Full Transcript
- 00:17
following equations Best represents circle k and hear potential answer
- 00:22
Who were smelling blood gratings here already Well before we
- 00:25
do anything at all even put on our shoes Come
- 00:28
on now you missed your window We'll need to recall
- 00:30
that standard equation for us Circle for the forgetful and
- 00:33
absent minded Here it is x minus h squared plus
- 00:37
y minus k squared equals r squared That thing where
- 00:40
the center of the circle is point h k in
- 00:43
the radius is our we've been given the circle center
- 00:45
as indicated by this lovely blue dot here And it
- 00:48
looks like it's located at point three Negative six so
- 00:52
we can now plug in three for age and negative
- 00:54
Six Four k Watch the signs when we plug in
- 00:57
negative six for k we're taking why Minus negative six
- 01:01
which is the same as y plus six so that
- 01:03
gives us x minus three squares plus y plus six
- 01:07
squared equals r squared Okay we're making some headway here
- 01:10
Incidentally if you're wondering what's ahead weigh about eighty pounds
- 01:13
all right now we need some point on circle so
- 01:16
we can determine the radius Well if we go seven
- 01:19
along the x axis then down six boom there we
- 01:23
go Seven negative six is one such point now since
- 01:26
we know that the radius is the distance from the
- 01:28
centre to any point on the circle We can also
- 01:30
deduce that the radius is four because seven right here
- 01:34
minus three right here equals four Well now we have
- 01:37
everything we need right the equation for this particular circle
- 01:40
This is what it looks like X money three squared
- 01:42
plus why plus six forty full sixteen which is option
- 01:47
c our final answer All right we gotta run Looks 00:01:49.977 --> [endTime] like a few of our horses got loose
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