3 years ago

What is the ships speed

Mathematics

1 answer:

jarptica [38.1K]3 years ago

7 0

Answer:

You need a photo or text to back that up, we can't solve this without an image or something that explains this problem.

Step-by-step explanation:

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Your answer should be 36.4 days.

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a club decides to sell t-shirts for $15 as a fundraiser. It costs $20 plus $9 per t-shirt to make the t-shirts. write and solve

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3 years ago

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Here are Xavier's bowling scores:

sammy [17]

Answer:

The variance rounded to the nearest tenth is 691.8

Step-by-step explanation:

Xavier's bowling scores:

135, 140, 130, 190, 112, 200, 185, 172, 163, 151, 149

No. of observations n = 11

$Mean = \frac{\text{Sum of all observations}}{\text{No. of observations}}\\Mean = \frac{135+140+130+190+112+200+185+172+ 163+ 151+149}{11}\\Mean =157$

Formula of variance : $\sigma^2=\frac{\sum(x_i-\bar{x})^2}{n}$

$\sigma^2=\frac{(135-157)^2+(140-157)^2+(130-157)^2+(190-157)^2+(112-157)^2+(200-157)^2+(185-157)^2+(172-157)^2+(163-157)^2+(151-157)^2+(149-157)^2}{11}$

$\sigma^2=\frac{7610}{11}$

$\sigma^2=691.81$

Hence the variance rounded to the nearest tenth is 691.8

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3 years ago