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d1i1m1o1n [39]
3 years ago
12

Is subtraction of decimals associative? If not, give a counter example.

Mathematics
1 answer:
Masteriza [31]3 years ago
4 0
Associative property is only applied to addition and multiplication. Thus, it can't be applied to subtraction. This property is manifested when you get the same answer no matter where you put the parenthesis. Example of associative property is:

(50 + 2) + (92 + 6) = 52+98 = 150
50 + (2+92) + 6 = 50 + 94 + 6 = 150

Here is the counter example for the subtraction of decimals:

(3.45 - 8.92) - (1.9 - 7.3) = -5.47 - ⁻5.4 = -0.07
3.45 - (8.92 - 1.9) - 7.3 = 3.45 - 7.02 - 1.9 = -5.47
As you can see, the answers are not the same.
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the y-intercept of the graph when : x=0

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Answer:

$0.60

Step-by-step explanation:

The mean is the average. We add up all the numbers and divide by the number of numbers.

The total for 1st week is  $12.48+$9.50+$10.25+$4.99+$8.59 = $45.81

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2nd week's total is 3 more than last week's total, so 2nd week's total is:

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Now, Mean:

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Which of the following has no solution?
Softa [21]

Answer:

(x + 1 s 1) n (x + 12 1)

(x +1<1) n (x + 1 > 1)

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Just simplify each the statements.

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(x + 1<-1) n (x + 1< 1)

(x <-2) n (x < 0) which is true, so there is a solution.

(x + 1 s 1) n (x + 12 1)

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The expression that would be added to both sides is (b/2a)^2

<h3>How to determine the expression?</h3>

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Read more about quadratic equation at:

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