1 Encontre as raízes e justifique: a) 36
porque
II
b) 81 =
porque
X х
=
c) √121 =
porque
d) 7100
porque
e) 144
porque
X Х
f) 225
porque
2 Complete o quadro.
6
8
12.
9
5
10
7
11
4
3
2
1
O
Número
49
9
Seu
quadrado​

17 1/3

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

where is the diagram? shown below where? ?

step-by-step explanation: