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Two parabolas are graphed in the coordinate plane. Parabola A is a function, and parabola B is not a function. What is the maximum number of points...
Which of the following points is a location where the function f(x) = -2x² + 12x + 54 crosses the horizontal axis?
TSI Math: Finding the Area of a Square 3 Views
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Description:
A square measures 12 units diagonally from corner to corner. What is its area?
A square measures 12 units diagonally from corner to corner. What is its area?
Transcript
- 00:03
All right same ash jumpers Here we go Square measures
- 00:07
twelve units diagonally from corner to corner What is its
- 00:11
area All right so it's a square We're told that
- 00:16
and remember the jaggery and they're um they're going to
- 00:19
create a triangle and then we'll get a squared plus
Full Transcript
- 00:21
b squared c squared We know c square Do we
- 00:24
know a equals b right So well there's Only one
- 00:27
measurement we care about when it comes to the area
- 00:30
of squares It's the length of the squares side right
- 00:33
Because that's what gives us the area label side length
- 00:37
x and the dagnall square is the high pot news
- 00:39
of an exhaust elise right triangle with both legs of
- 00:42
length x so we can use the pythagorean theorem here
- 00:44
to find axe And we've got you know x squared
- 00:47
plus x squared is well twelve squared right A squared
- 00:50
plus b squared is inscribed Just simplify both sides We
- 00:52
had two ex words one forty four and divide out
- 00:55
two and we've got that seventy two So we want
- 00:59
the square root of seventeen to here right Well no
- 01:02
need to worry about that If we had acts while
- 01:04
we would just square it again So the area of
- 01:07
the square is x squared which we've discovered is seventy
- 01:11
two Right square to seventy two squared is seventy two
- 01:14
least in texas So the square has an area of
- 01:16
seventy two square units The answer is a and war 00:01:18.943 --> [endTime] shmoop Oh
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