Question

Calcule o valor de X em cada triângulo.

Answer 1

y=x-1


$\frac{x}{x-15} = \frac{51,6}{33,6}$

33,6x=51,6x-774
18x=774
x=774÷18
x=43cm

como y=x-15
y=43-15
y=28c


b)
y-x=9
y=9+x
$\frac{x}{10} = \frac{9+x}{17,5}$

17,5x=10x+90
7,5x=90
x=12

como
y=9+x
y=21+9
y=30cm



23)

x+y+z=304

$\frac{x}{150} = \frac{y}{130} = \frac{z}{100}$

aplicando a propiedade

$\frac{x+y+z}{150+130+100} = \frac{304}{380} = \frac{4}{5}$

simplifiquei  304 com 380

$\frac{x}{150} = \frac{4}{5}$

$x= \frac{4.150}{5}$

x=120m

$\frac{y}{130} = \frac{4}{5}$

$y= \frac{130.4}{5}$

y=104m

$\frac{z}{100} = \frac{4}{5}$

$z= \frac{100.4}{5}$

z=80m