3 years ago

What’s the area/volume?

Mathematics

1 answer:

luda_lava [24]3 years ago

5 0

Answer:

pls what shape is that .

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There are 38 students in Mr. Reynolds math class and 20 are boys.If a student is selected at random what is the probability that

damaskus [11]

Answer:

9/19

Step-by-step explanation:

if 20 students are boys, then the remaining students are girls. 38-20 = 18

There are 18 girl students.

18/38 can be simplified to 9/19

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What does the shaded part represent in the given Venn -diagram

Snezhnost [94]

Pls look at your question before asking a question. You didn’t give us a venn diagram to look at.

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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.

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3 years ago

A museum had 275,608 visitors last year what is the number rounded to the nearest thousand

podryga [215]

It would be 276,000 since 5,608 would round to 6,000

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Use order of operation to solve 4[2.5+3(20+7)]

telo118 [61]

334 is the answer to the question

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