(6 + 7) + 8 = 21 choose an equivalent addition sentence that shows the associative property of addition. a. (6 + 7) + 8 = 21 b. 6 + (7 + 8) = 21 c. 6 + 7 + 8 = 21 d. 21 = (6 + 7) + 8

Step-by-step explanation:

1. By definition, the associative property of addition is:

This property says that you can group the numbers in different ways and you will obtain the same result.

2. Therefore, if you have the following expression:

You apply  the Asociative property of addition by regrouping the numbers as following:

3. Then, you can conclude that the correct option is B.

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: