A dance club ordered shoes for all of its members. The shoe sizes are shown in the table.

2 answers:

5 0

The sample mean is the sum of the sample values divided by the number of them:
(7 +7 +10 +6 +9 +6 +8 +7.5 +8.5 +8)/10 = 77/10 = 7.7

The sample mean is 7.7.

Olegator [25]2 years ago

5 0

Answer:

The sample mean of the data is:

7.7

Step-by-step explanation:

The sample mean is the sum of all sample observations divided by the number of sample observations.

Let sample mean=x

x=(7 +7 +10 +6 +9 +6 +8 +7.5 +8.5 +8)/10

x= 77/10

x= 7.7

Hence, the sample mean of the data is:

x=7.7

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Math help no guesses how do u solve it plz

Gala2k [10]

Answer:

see below

Step-by-step explanation:

You want terms that have a common ratio of 3, so the term in the summation will be 3 to some power. Only the first expression matches that requirement.

You can try different values of n to see if they fit the problem description.

n = 1: 1(3)^0 = 1(1) = 1

n = 2: 1(3)^1 = 1(3) = 3

n = 3: 1(3)^2 = 1(9) = 9 . . . . . the third triangle in the set has 9 shaded triangles, as this expression predicts. Thus, we see the problem description being matched by <em>the first answer choice shown</em>.