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stepladder [879]
2 years ago
14

EACH QUESTION HAS *MULTIPLE* ANSWERS

Mathematics
1 answer:
KIM [24]2 years ago
8 0

Answer:

<u>Associative Property Law</u>

Applies to <em>addition </em>and <em>multiplication </em>only.

Grouping of numbers by parentheses in a different way does not affect their sum or product.

Addition:  (a + b) + c = a + (b + c) = (a + c) + b

Multiplication:  (a × b) × c = a × (b × c) = (a × c) × b

<u>Commutative Property Law</u>

Applies to addition and multiplication only.

Changing the order or position of two numbers does not change the end result.

Addition:  a + b = b + a

Multiplication:  a × b = b × a

<u>Distributive Property</u>

Distributive multiplication over addition and subtraction:

Addition:   a(b + c) = ab + ac

Subtraction:   a(b - c) = ab - ac

<u>Identity Property of Addition</u>

Also known as the <em>identity property of zero</em>.  Adding 0 to any number does not change the number, i.e. the number keeps its identity.

a + 0 = a = 0 + a

<u>Identity Property of Multiplication</u>

Also known as the <em>identity property of one</em>.  Multiplying any number by 1 does not change the number, i.e. the number keeps its identity.

a × 1 = a = 1 × a

----------------------------------------------------------------------------------------------

4 + 3(9 + 2)

4 + (3 × 9) + (3 × 2)   distributive property

4 + 27 + 6

4 + 6 + 27   commutative property of addition

10 + 27

37

----------------------------------------------------------------------------------------------

(4 × 5) × ¹/₄

4 × (5 × ¹/₄)  associative property of multiplication

4 × (¹/₄ × 5)   commutative property of multiplication

(4 × ¹/₄) × 5  associative property of multiplication

1 × 5  identity property of multiplication

5

----------------------------------------------------------------------------------------------

(0 + 3) + 17  

0 + (3 + 17)  associative property of addition

0 + 20  identity property of addition

20

----------------------------------------------------------------------------------------------

8 + 3(1 - 2)

8 + (3 × 1) - (3 × 2)   distributive property

8 + 3 - 6

11 - 6

5

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What's the equation for a circle with a center of (-2, 1) and a radius of 3.​
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