
Expoentes negativos, sequências numéricas e área
Mathematics
9th Grade
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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2
3
27
162
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A) 14
B) 25
C) 29
D) 33
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Marta tem um terreno com o formato irregular, conforme imagem ao lado. Qual é a área desse terreno?
15 cm²
20,5 cm²
20,5 dm²
25 cm²
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Observa a sequência de figuras ao lado. Mantendo esta disposição, a expressão algébrica que representa o número de triângulos (T) na n-ésima figura é:
T = 2n + 2
T = 3n + 1
T = 2n + 3
T = 5n - 1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Observe a sequência de figuras abaixo. Essa série de figuras pode ser indicada pela sequência numérica (4, 7, 10, 13, 16, ...), em que cada número indica a quantidade de quadrinhos usados para formar cada figura. Mantendo esse mesmo padrão para essa sequência, a expressão algébrica que representa o número de quadradinhos (Q) na ordem n (n = 1, 2, 3, ...) é:
Q(n) = 3n + 1
Q(n) = 4n
Q(n) = 5n - 1
Q(n) = n + 3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
De quantas maneiras diferentes, uma pessoa pode se vestir tendo 6 camisas e 4 calças?
10 maneiras
24 maneiras
32 maneiras
40 maneiras
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Uma lanchonete tem uma promoção de combo com preço reduzido em que o cliente pode escolher 7 tipos diferentes de sanduíches, 3 tipos de bebida e 3 tipos de sobremesa. Quantos combos diferentes os clientes podem montar?
13 combos
24 combos
63 combos
36 combos
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