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Reptile [31]
3 years ago
7

Can someone please explain the Associative Property, and Distributive Property to me? I understand the Commutative Property and

Identitive Property but I'm having trouble with the other two. Explain in the simplest way possible, please. Thank you :)
Mathematics
1 answer:
Anettt [7]3 years ago
4 0

The associative property is basically just when you move the parentheses in a problem. For example: (a+b)+c = a+(b+c).

Distributive property is a little more complicated, its better if i show you.

a(b+c) = ab+ac

so a times b plus c is the same as a times b plus a times c.

Hope i helped:)



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In the DBE 122 class, there are 350 possible points. These points come from 5 homework sets that are worth 10 points each and 3
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Answer:

i) it is not possible for the student to receive an A in the class

ii) 119 points

iii) 84points

Step-by-step explanation:

Total exam scores = 350points

homework scores of 7, 8, 7, 5, and 8

Let the third exam score =y

Exam scores = 81, 80, x

i) To know if the student would get an A in class, we would find the third exam score

(Scores received by a student)/ (total scores) = least of the grade percentage to get an A

(7 + 8 + 7 +5 + 8 + 81 + 80 + x)/350 = 0.9

(196+x)/350 = 0.9

196+x = 350 × 0.9

196+x = 315

x = 315-196

x = 119

119 > 100

Since the maximum grade for each of the exam score is 100points, it is not possible for the student to receive an A in the class.

ii) Since the least of the grade percentage that would guarantee an A is 0.9, the minimum score on the third exam that will give an A = 119points

iii) (Scores received by a student)/ (total scores) = least of the grade percentage to get a B

(7 + 8 + 7 +5 + 8 + 81 + 80 + x)/350 = 0.8

(196+x)/350 = 0.8

196+x = 350 × 0.8 = 280

x = 280-196

x = 84

The minimum score on the third exam that will give a B = 84points

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