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Arte-miy333 [17]
2 years ago
11

Alondra says that (12 + 31) × 5 is equivalent to 12 + 31 × 5 because of the associative property. Determine if Alondra is correc

t. Justify your answer.
Mathematics
1 answer:
MAXImum [283]2 years ago
7 0

Answer:

No

Step-by-step explanation:

(12 + 31) × 5 = 215

12 + 31 × 5 = 167

order of operations are the rules that state the sequence in which the multiple operations in an expression should be solved.

Order of Operations :

1. Parentheses

2. Exponents

3. Multiplication and Division

4. Addition and Subtraction

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Answer:

Juan has to work at least 21 weeks.

Step-by-step explanation:

Juan earns $3 a day, then he earns $21 per week.

Let x be the number of weeks Juan works. He will earn $21x in x weeks.

Juan has saved $213,

He earns $21x,

Juan's total earnings are $213+$21x.

He needs to save at least $654, so

213+21x\ge 654\\ \\21x\ge 654-213\\ \\21x\ge 441\\ \\x\ge 21

Juan has to work at least 21 weeks.

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What is 1/5 plus 3/7 in fractions
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Answer:

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Step-by-step explanation:

first get a common denominator in order to add. The common denominator is 35.

the new fractions should be 7/35 + 15/35

add the top and you get 22/35

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Step-by-step explanation:

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