beyza13
02.11.2020 •
Mathematics
Sarah has a set of tiles that follow the pattern of the figures shown below. She says that she has a set of tiles that has nine red triangles. Is nine a reasonable number of red triangles? What is a valid explanation for your answer?
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Ответ:
Responder:
x = 15/7
Explicação passo a passo:
Dada a equação:
7 x + 4 = 19
Subtraia 4 de ambos os lados
7x + 4 - 4 = 19 - 4
7x = 15
Divida os dois lados por 7
7x / 7 = 15/7
x = 15/7