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4vir4ik [10]
3 years ago
15

How does knowing the double 6+6=12 help you solve the near double 6+7=13

Mathematics
1 answer:
forsale [732]3 years ago
8 0

Answer:

6 + 7 = 13

Step-by-step explanation:

We are given the following information in the question:

We know that

6 + 6 = 12

We need this information to evaluate

6+7

The evaluation can be done with the help of using associative property and distributive property.

Associative property: (a + b) + c = a + (b + c)

The evaluation can be shown as:

6 + 7\\= 6 + 6 + 1\\=(6 + 6) + 1\\= 12 + 1\\=13

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Answer:

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Step-by-step explanation:

Complete question:

Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)

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