Which pair of expressions is equivalent using the Associative Property of Multiplication?

Mathematics

1 answer:

RUDIKE [14]2 years ago

3 0

Answer:

Step-by-step explanation:

In the associative property of multiplication, the product of the multiplication of 3 or more numbers is the same irrespective of how they are grouped. This means that irrespective of the bracket or which number comes first, the product will always be the same.

From the given scenarios, the pair of expressions that are equivalent using the Associative Property of Multiplication are

B 6(4a ⋅ 2) = (4a ⋅ 2) ⋅ 6

C 6(4a ⋅ 2) = 6 ⋅ 4a ⋅ 2

D6(4a ⋅ 2) = (6 ⋅ 4a) ⋅ 2

The results are the same irrespective of the arrangement of the numbers.

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Three times a first number decreased by a second number

ki77a [65]

Answer:

The two numbers are 3 and 5

Step-by-step explanation:

$3X-Y=12\\X + 4Y=17\\$

Multiply top equation by 4 to cancel out the Ys

$12X - 4Y = 48\\X + 4Y = 17\\\\13X = 65\\X = 5\\$

Since X =5, we can plug it into either of the top two equations to find out the value of Y

$3(5) - Y = 12\\15 - Y = 12\\Y = 3$

To double check

$3(5) - 3 \\15 - 3\\12\\\\5 + 4(3) \\5 + 12\\17$

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2 years ago

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DedPeter [7]

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