How do I regroup this for associative property 5 + 6) + (4 + 7) + 3

Mathematics

2 answers:

Bumek [7]2 years ago

3 0

Answer:

5+6)+(4+7)+3

11+11)+3

22+3

Sidana [21]2 years ago

3 0

9514 1404 393

Answer:

5 +(6 +4) +(7 +3)

Step-by-step explanation:

"Regroup" in this context means relocate pairs of parentheses any way you like. There are many different correct answers.

Here, pairs of terms are grouped. You can group more, or different pairs. Some possibilities are ...

(5 +6) +((4 +7) +3)

5 +(6 +4 +7) +3

5 +(6 +4) +(7 +3) . . . . . groups "tens" together

(5 +6) +4 +(7 +3)

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The diameter of a dome is 28 inches. What is the volume? Leave in terms of pi.

MArishka [77]

To find the volume of a dome, you would have to find the volume of the sphere, theoretically, and then divide it by two. To calculate the volume, we would use the formula 4/3 $\pi$ $r^{3}$ . The radius (r) in this case is half of the diameter which is 14. 4 x 3.14 (pi) = 12.56. 12.56 x 14 x 14 x 14 (2744) = 34464.64. If we divide this number by 3, we get 11488.2133. If we divide this by 2 (to get the dome), we get 5744.10656. Which would be 5744.1 rounded to the nearest tenth.