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Sergeeva-Olga [200]
2 years ago
12

Use the Associative Property of Addition to write an expression equivalent to (u + 2) + 8.

Mathematics
1 answer:
Alla [95]2 years ago
7 0

Answer:

D

Step-by-step explanation:

First of, associative property of addition is rearranging the parenthesis and not moving the numbers

A is incorrect because you can not take out the parenthesis in the equation

B is inccorrect because they change the position of the number

C is incorrect because they change the position of number

D is correct. It only change the position of the parenthesis

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A. Equilateral: An equilateral triangle is a triangle with 3 equal sides. Since there are 180 degrees in a triangle, an equilateral triangle would have three sides of 60 degrees, and none of 45 degrees. Answer? Incorrect.

B. Isosceles: An isosceles triangle has two sides that are equal. 45 and 45 are equal, therefore, this answer is: Correct!

C. Scalene: A scalene triangle has three unequal sides, therefore, this answer is incorrect.

D. Obtuse: An obtuse triangle has one angle that is more than 90 degrees, therefore, since 45 and 45 equal 90 already, this answer is: incorrect.

E. Right: A right triangle has one right angle (angle that equals 90 degrees) since 45 + 45 = 90, and 90 + 90 = 180, this answer is: Correct!

F. Equiangular: This last choice is practically the same as the first, therefore the answer is: incorrect.

The two correct answers are: B Isosceles, and E Right!
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