20^2 + 21^2 = 27^2
400 + 441 = 729
881 = 729 (does not equal)
Not a right traingle
Y *x =20
y +x =9
rewrite 1st eq. as y = 20/x
subsituute that into 2nd eq.
20/x +x =9
multiply each term by X
20 +x^2 = 9x
subtract 9x from each side:
x^2 - 9x +20 = 0
now factor:
(x-5) (x-4) = 0
solve for x
5-5 = 0
4-4 = 0
so X can be 4 or 5
replace x into equations and solve for Y
so when X = 4, Y = 5
When X = 5, Y = 4
x= 5,4
y = 4,5
There is a 1/8 or a 16.6% chance that the card you pick will be red.
Hope this helps.
The key features of the graph include the fact the graphs are periodic.
<h3>How to illustrate the graph?</h3>
It should be noted that a graph is a diagram that represents ban interrelations between variables.
The tan graph is simply the visual representation of the tangent function for a range of angles.
In this case, the graphs have been attached and it can be seen that the tan graph repeats every 180° and is not a continuous curve.
Learn more about graph on:
brainly.com/question/19040584
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17.5
2pi times the radius times the degree measurment/360