(s) to40 - y2 = 0? x = +2/10 o x=+ x= + x=

Step-by-step explanation:

40 - y2 = 0

add - 40 :  -40+40-y² = -40

-y² = - 40

mltiply by : - 1

y² = 40

y = √40 or y =  - √40

but : 40 = 4×10

√40 = √(4×10) = √4×√10=2√10

idk

step-by-step explanation:

idk

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