All categories

3 years ago

Write 0.38 as a fraction in lowest terms.

Mathematics

2 answers:

svlad2 [7]3 years ago

5 0

Answer:

19/50

Step-by-step explanation:

$\sf{}$

♛┈⛧┈┈•༶♛┈⛧┈┈•༶

Maksim231197 [3]3 years ago

5 0

Answer:

19/50

Step-by-step explanation:

You might be interested in

Show all your steps<br> 5| x | + 3 < 18

Jet001 [13]

Answer:

-3 < x < 3

x is some number between -3 and 3; x cannot equal -3, x cannot equal 3

graph shown below

==============================================

Work Shown:

5|x| + 3 < 18

5|x| + 3 - 3 < 18-3 ... see note 1

5|x| < 15

(5|x|)/5 < 15/5 .... note 2

|x| < 3

-3 < x < 3 .... note 3

graph shown below

-----------

note 1: Subtract 3 fom both sides to undo the "+3"

note 2: Divide both sides by 5 to undo the multiplication

note 3: If |x| < k, for some positive number k, then -k < x < k

3 0

3 years ago

Set A of six numbers has a standard deviation of 3 and set B of four numbers has a standard deviation of 5. Both sets of numbers

Alenkinab [10]

Given:

$\sigma_A=3$

$n_A=6$

$\sigma_B=5$

$n_B=4$

$\overline{x}_A=\overline{x}_B$

To find:

The variance. of combined set.

Solution:

Formula for variance is

$\sigma^2=\dfrac{\sum (x_i-\overline{x})^2}{n}$ ...(i)

Using (i), we get

$\sigma_A^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{n_A}$

$(3)^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}$

$9=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}$

$54=\sum (x_i-\overline{x}_A)^2$

Similarly,

$\sigma_B^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{n_B}$

$(5)^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}$

$25=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}$

$100=\sum (x_i-\overline{x}_B)^2$

Now, after combining both sets, we get

$\sigma^2=\dfrac{\sum (x_i-\overline{x}_A)^2+\sum (x_i-\overline{x}_B)^2}{n_A+n_B}$

$\sigma^2=\dfrac{54+100}{6+4}$

$\sigma^2=\dfrac{154}{10}$

$\sigma^2=15.4$

Therefore, the variance of combined set is 15.4.

7 0

3 years ago

A flower bed has the shape of a rectangle 15 feet long and 12 feet wide. What is its area in square yards?

Romashka-Z-Leto [24]

20 square yards. 15 * 12 is 180 and then you divide it by 9 which gives you 20 square yards. 9 square feet are equivalent to a square yard.

6 0

3 years ago

Read 2 more answers

Does anyone know the answer?

Hitman42 [59]

Answer:

Step-by-step explanation:

6x5 is 30

3 0

3 years ago

Read 2 more answers

The population of a town in 2000 was 430. The population is increasing at a rate of 0.9% every year. What will be the projected

Naddik [55]

If in 2000 there were 430 folksk, 2010 is 10 years later, thus t = 10

$\bf \qquad \textit{Amount for Exponential Growth}\\\\
A=I(1 + r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
I=\textit{initial amount}\to &430\\
r=rate\to 0.9\%\to \frac{0.9}{100}\to &0.009\\
t=\textit{elapsed time}\to &10\\
\end{cases}
\\\\\\
A=430(1+0.009)^{10}\implies A=430(1.009)^{10}$

7 0

4 years ago