Na quinta da Marta existem galinhas e porcos. Sabendo que existem 10 cabeças e trinta patas, quantos sao as galinhas e quantos sao os porcos?

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

5+2x=a

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a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²