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3 years ago

Use the parallelogram below to solve for x x , then find the length of all 4 sides. figure

Mathematics

1 answer:

SVETLANKA909090 [29]3 years ago

6 0

Can u show me what the parallelogram below was

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What is the value of |4.75|

kari74 [83]

Answer:

The absolute value of 4.75 is 4.75. It can’t be a negative, only a positive. On the off chance you’re looking for other alternate forms of 4.75, they would be either 19/4 or 4 3/4.

4 0

2 years ago

A shelf can fit 128 books on it. Each book is 1.4 inches thick. Write and solve an equation to represent the situation where s r

bogdanovich [222]

Answer:

equation/answer : 1.4×128=s

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3 years ago

An article reported the following data on oxygen consumption (mL/kg/min) for a sample of ten firefighters performing a fire-supp

nasty-shy [4]

Answer:

a) Range = 25.6

b) Variance = 48.1446

c) s = 6.9386

d) See below

Step-by-step explanation:

(a) the sample range

To obtain the sample range, we must sort the data increasingly :

23.7, 26.3, 28.3, 28.7, 29.6, 29.8, 30.1, 31, 33.5, 49.3

Then, find the distance between the largest and the lowest

Range = 49.3 - 23.7 = 25.6

(b) the sample variance $s^2$ from the definition

In order to find the variance from the definition, we need first the mean. The mean is defined as the average

$\bar x=\displaystyle\frac{\displaystyle\sum_{i=1}^{n}x_i}{n}$

where the $x_i$ are the values of the data collected and n=10 the size of the sample.

So, the mean is

$\bar x=31.03$

Now, the variance of the sample is defined as

$s^2=\displaystyle\frac{\displaystyle\sum_{i=1}^n(x_i-\bar x)^2}{n-1}$

and we have that the variance is

$s^2=48.1446$

(c) the sample standard deviation

The sample standard deviation is nothing but the square root of the variance

$s=\sqrt{48.1446}=6.9386$

d) $s^2$ using the shortcut method

The shortcut method figures out the variance without having to compute the mean. The formula is

$s^2=\frac{n\sum x_i^2-(\sum x_i)^2}{n(n-1)}$

where n=10 is the sample size .

So, using the shortcut method,

$s^2=\frac{10*10,061.91-96,286.09}{10*9}=48.1446$

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3 years ago

Hakeen has 100 tomatoes

sammy [17]

And..........he has 100 tomatoes so what?

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3 years ago

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A rectangle has a length of 28 yards less than 4 times it’s width. If the area of the rectangle is 912 square yards, find the le

tatiyna

Answer:

Step-by-step explanation:

Nxgger

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3 years ago