Question

Calcule o valor de x



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Answer 1

Resposta:

entendi

muito obrigado

Answer 2

3)

a)

$PA \times PB = PC \times PD \\ \\ 4(4 + x) = 3(3 + 5) \\ \\ 16 + 4x = 3(8) \\ \\ 4x = 24 - 16 \\ \\ 4x = 8 \\ \\ x = \dfrac{8}{4} \\ \\ \blue{x = 2 \: u.c.}$

b)

$x + 10 = 15 \\ \\ x = 15 - 10 \\ \\ \blue{x = 5 \: u.c.}$

c)

$PA \times PB = PC \times PD \\ \\ 4(4 + 8) = 2(2 + x) \\ \\ 4(12) = 4 + 2x \\ \\ 48 = 4 + 2x \\ \\ 4 + 2x = 48 \\ \\ 2x = 48 - 4 \\ \\ 2x = 44 \\ \\ x = \dfrac{44}{2} \\ \\ \blue{x = 22 \: u.c.}$

Bons Estudos!