Which statement is true regarding this mapping? у
-2
4
2
16
4
OF It does not represent y as a function of x because there are more x values than corresponding y values
O G It does represent y as a function
Ex because each x value corresponds to only one y value.
OH It does not represent y as a function of x because some x values are negative integers and the y values are positive.
J It does represent y as a function of x because each y value corresponds to only one x value

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4