Question

considere o retanglo abaixo e dtermine:

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     llllllllllllllllllllllllllllllllllllllllll
 x  llllllllllllllllllllllllllllllllllllllllll                          <----ISSO E UM RETÂNGULO TAH? '-'
     llllllllllllllllllllllllllllllllllllllllll
             35


a)o perimetro dele em funcao de x
b)o perimetro para x=12.5
c)o valor de x para que se tenha f(x)=90

Answer 1

a)
P=x+x+35+35

P=2x+70

b)
p/ x=12,5

P=2(12,5)+70

P=25+70

P=95

c)

f(x)=90

2x+70=90

2x=90-70

2x=20

x=20÷2

x=10

Answer 2

Resposta:

Explicaçãa)

P=x+x+35+35

P=2x+70

b)

p/ x=12,5

P=2(12,5)+70

P=25+70

P=95

c)

f(x)=90

2x+70=90

2x=90-70

2x=20

x=20÷2

x=10o passo-a-passo: