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Hatshy [7]
3 years ago
7

find the sum of 301+73+27 , mentally, using the associative property of addition. Show how you can use the property to group two

of the addends. Explain how you found the sum.
Mathematics
1 answer:
Zolol [24]3 years ago
6 0

Answer:

401

Step-by-step explanation:

301 + 73 + 27

Using the correct order of operations, you would start by adding 301 to 73. Then you'd add 27 to that sum.

Using the associative property of addition, you change the grouping to add 73 and 27 first since that equals 100, and it's easy to add 100 to 301 mentally.

301 + 73 + 27 =

= 301 + (73 + 27)

= 301 + 100

= 410

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Step-by-step explanation:

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I need help with both of these someone please help me . you’ll get 20 brainly points !!
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Answer:

First question: 42cm^2

Second question:

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white part:54cm^2

Step-by-step explanation:

Lets do math:

look you gave me alot to do but lets go:

Question 1:

lets find the area of the whole rectangle without the parts taken away.

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lets put that away for a little bit and move onto the empty space that we have to take away from the rectangle to get this shape.

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Question #2:

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lets put that away for a little bit.

now lets find the area of the little rectangle

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so now we have this:

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Step-by-step explanation:

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∴ MJ is perpendicular bisector of NH

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∴ m∠NIM = m∠NIJ = 90°

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∴ m∠MIL = m∠JIK

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