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natalie2sheffield
20.04.2020 •
Mathematics
O número de pedidos na pizzaria Bela Dona, das 12 às 18 horas em um dia do mês de janeiro, em Jundiaí, é dado por f(t) = – t² + 30t – 216, em que 12 ≤ t ≤ 18 é a hora desse dia. Pode-se afirmar que o número máximo de pedidos nesse período do dia foi de:
Escolha uma:
a. 0.
b. 9.
c. 18.
d. 15.
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Ответ:
4(10n² - 2) - 5(8n² + 7) =
= 40n² - 8 - 40n² - 35 =
= 40n² - 40n² - 8 - 35 = -43 ← the end