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3 years ago

PLEASE HELP!

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

7 0

Answer:

V=5(6)?(14)

Step-by-step explanation:

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What is 41/4 as a mixed number

lord [1]

41/4 is 10 $\frac{1}{4}$

6 0

3 years ago

-5(3x-1+3x = 3 what is x?

yanalaym [24]

Answer:

x = 1/15

Step-by-step explanation:

-5(3x-1+3x) = 3

add like terms:

-5(6x-1) =3

distribute -5 throughout the Parentheses:

-30x+5= 3

move the constant to the right side and change it's sign:

-30x=3-5

calculate:

-30x= -2

Divide both sides by -30:

x = 1/15

3 0

3 years ago

There is a theory that children wearing superhero costumes are more likely to harm themselves because of the unrealistic impress

____ [38]

Answer:

$Mean = 47$

$n = 6$

$s= 16.56$

$\sqrt n = 2.45$

$SEM = 11.55$

Step-by-step explanation:

Given: The above data

Solving (a): Mean of each group

Mean is calculated as:

$Mean = \frac{\sum x}{N}$

$Mean = \frac{55 + 31 + 58 + 20 + 47 + 37+68 + 32 + 85 + 69 +58 + 52+26 + 47 + 30 +35 + 53 + 43}{18}$

$Mean = \frac{846}{18}$

$Mean = 47$

Solving (b): The sample size of each group

This is the number of rows in each group.

Hence:

$n = 6$

Solving (c): Standard deviation (s)

This is calculated as:

$s = \sqrt{\frac{\sum (x - \bar x)^2}{N}}$

So, we have:

$s= \sqrt{\frac{(55 - 47)^2 + (31 - 47)^2 +......... + (43 - 47)^2}{18}}$

$s= \sqrt{\frac{4936}{18}}$

$s= \sqrt{274.22}$

$s= 16.56$

Solving (d): Square root of n

$\sqrt n = \sqrt 6$

$\sqrt n = 2.45$

Solving (e): SEM

This is calculated as:

$SEM = \frac{s}{\sqrt N}$

$SEM = \frac{47}{\sqrt{16.56}}$

$SEM = \frac{47}{4.07}$

$SEM = 11.55$

5 0

3 years ago

If a restaurant sells 6,000 meals in one month, at an average price of 17 per meal for the customer and an average cost of $4.60

mash [69]

Answer:

The percentage increase from the restaurant price to the restaurant cost = 269.56%

Step-by-step explanation:

An average price of per meal for the customer= $17

An average cost of per meal for the restaurant= $4.60

Difference in price = 17-4.60

Difference in price = $12.4

So, the percentage increase from the restaurant price to the restaurant cost = $\frac{12.4}{4.60} \times 100$

The percentage increase from the restaurant price to the restaurant cost = 269.56%

4 0

4 years ago

Plz help!!! I need the answer quickly

MaRussiya [10]

Hamburger cheeseburger big Mac whopper

3 0

3 years ago

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