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2 years ago

Please help !

Mathematics

1 answer:

makvit [3.9K]2 years ago

3 0

Answer:

New line =3*ZX

Step-by-step explanation:

It is given that the isosceles trapezoid is dilated using a scale factor of 1/3

and a line is drawn through the center of the new dilated figure, so

let us suppose that line is EF which is drawn and it will also pass through

the center in similar way the line ZX passes through so after considering this situation, we can come to this point

$\text{new Line EF}=\frac{ZX}{1/3} \\EF=3*ZX$

so new line will be 3 times longer than ZX.

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What ratios are equivalent to 4:1

tatuchka [14]

Answer:

12:3

Step-by-step explanation:

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2 years ago

Dual-energy X-ray absorptiometry (DXA) is a technique for measuring bone health. One of the most common measures is total body b

kramer

Answer:

(a)

$\bar x = 0.0075$

$s = 0.0049$

(b)

B. The sample is too small to make judgments about skewness or symmetry.

Step-by-step explanation:

Given:

$n = 8$

$\begin{array}{ccccccccc}{} & {S} & {u} & {b} &{j} & {e} & {c} & {t} & {s} &{Operator} & {1} & {2} & {3} & {4} & {5} & {6} & {7} & {8} & {1} & 1.326 & 1.337 & 1.079 & 1.229 & 0.936 & 1.009 & 1.179 & 1.289 & 2 & 1.323 & 1.322 & 1.073 & 1.233 & 0.934 & 1.019 & 1.184 & 1.304 \ \end{array}$

Solving (a):

First, calculate the difference between the recorded TBBMC for both operators:

The last row which represents the difference between 1 and 2 is calculated using absolute values. So, no negative entry is recorded.

The mean is then calculated as:

$\bar x = \frac{\sum x}{n}$

$\bar x = \frac{0.003 + 0.015 + 0.006 + 0.004 + 0.002 + 0.010 + 0.005 + 0.015}{8}$

$\bar x = \frac{0.06}{8}$

$\bar x = 0.0075$

Next, calculate the standard deviation (s).

This is calculated using:

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

So, we have

$s = \sqrt\frac{(0.003 - 0.0075)^2 + (0.015 - 0.0075)^2+ (0.006- 0.0075)^2+ ....... + (0.005- 0.0075)^2+ (0.015- 0.0075)^2 }{8}$ $s = \sqrt\frac{0.00019}{8}$

$s = \sqrt{0.00002375$

$s = 0.0049$

Solving (b):

Of the given options (A - E), option B is correct because the sample is actually too small

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2 years ago

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Andreyy89

Fractions that aren't equivalent would be 30/60, 34/60 and anything that cannot be the same as 36/60.

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2 years ago

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seropon [69]

Answer:

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Step-by-step explanation:

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B..............
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