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Komok [63]
3 years ago
13

Which expression is equivalent to a + (c + 7)?

Mathematics
2 answers:
zloy xaker [14]3 years ago
7 0
Answer: D. (a+c)+7
Step-by-Step Explanation:
Consider the association property of addition. The way you group addition won’t affect the sum. Therefore D. is the right answer.
Vikki [24]3 years ago
3 0

Answer:

(a+c)+7

Step-by-step explanation:

this is called the Associative Property

(x+y)+z=x+(y+z)

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It costs $3.63 more for the gold die than the gold plated die.

The volume of each half of the die is given by the formula

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We also need to find the surface area, as it will be painted.  Each face is an equilateral triangle; the area of a triangle is given by the formula

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