3 years ago

Evaluate the piecewise function for the given values of x by

Mathematics

1 answer:

lara31 [8.8K]3 years ago

5 0

Answer:

s'il vous plaît vous pouvez me aider à ma dernière question ??

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3. The following are the scores you shot in five rounds of golf: 70,80,75,75,80. The variance is: A. 3.74 C. 14 B. 196 D. 70

Paladinen [302]

Answer:

Option C.

Step-by-step explanation:

For a given set of N elements:

{x₁, x₂, ..., xₙ}

The mean is given by:

$M = \frac{x_1 + x_2 + ... + x_n}{N}$

And the variance is given by:

$v = \frac{(x_1 - M)^2 + (x_2 - M)^2 + ... + (x_n - M)^2}{N}$

Then for our set:

{70, 80 ,75, 75, 80}

We have 5 elements, then N = 5

The first thing we need to find is the mean.

$M = \frac{70 + 80 + 75 + 75 + 80}{5} = 76$

Then the variance will be:

$v = \frac{(70 - 76)^2 + (80 - 76)^2 + (75 - 76)^2 + (75 - 76)^2 + (80 - 76)^2}{5} = 14$

The correct option is C, 14.

6 0

3 years ago

What is 9x9 is 81 because if you count by 9 times the 9 is 81

mote1985 [20]

Answer:

Yes it's 81

Step-by-step explanation:

9 x 9 = 81

9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 81

Your welcome

6 0

3 years ago

Find the equation of each line and then use them to solve the system.

monitta

Answer:

Step-by-step explanation:

uhm

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3 years ago

I need help with this problem please use the five step plan

Tpy6a [65]

Do 30+14 which is 44

6 0

4 years ago

Read 2 more answers

you need to use a corded drill on something 50 feet away from the nearest outlet. if the cord on your drill is 8' and you have t

koban [17]

All three
16+16+16=48+8 =over 50 (56)

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3 years ago