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3 years ago

10

When designing a questionnaire, the most important rule of all is to make sure that questions collect the right data in a form t

hat can be used to further fact-finding.
a. true
b. false

1 answer:

jonny [76]3 years ago

4 0

Answer: True. Questions should be collecting unbiased data that can be used in fact-finding. Having questions that are unrelated would not benefit the questionnaire. The questions within the questionnaire are one of the most important things. So, your answer would be A) true.

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What to fractions are equivalent to 1/3

Alinara [238K]

Answer:

2/6 And 4/12

Step-by-step explanation:

both simplified equals 1/3.

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3 years ago

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Soloha48 [4]

Desert Shores is below the sea level and the difference is more than 600 feet

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In the scale used on a blueprint 1/4 inch represent 3 feet on the blueprint what is the length of the room with an excellent of

BigorU [14]

You would do 24 times 3 and get 72 or divide 24 by 1/4=0.25

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3 years ago

In a G.P the difference between the 1st and 5th term is 150, and the difference between the

liubo4ka [24]

Answer:

Either $\displaystyle \frac{-1522}{\sqrt{41}}$ (approximately $-238$ ) or $\displaystyle \frac{1522}{\sqrt{41}}$ (approximately $238$ .)

Step-by-step explanation:

Let $a$ denote the first term of this geometric series, and let $r$ denote the common ratio of this geometric series.

The first five terms of this series would be:

$a$ ,
$a\cdot r$ ,
$a \cdot r^2$ ,
$a \cdot r^3$ ,
$a \cdot r^4$ .

First equation:

$a\, r^4 - a = 150$ .

Second equation:

$a\, r^3 - a\, r = 48$ .

Rewrite and simplify the first equation.

$\begin{aligned}& a\, r^4 - a \\ &= a\, \left(r^4 - 1\right)\\ &= a\, \left(r^2 - 1\right) \, \left(r^2 + 1\right) \end{aligned}$ .

Therefore, the first equation becomes:

$a\, \left(r^2 - 1\right) \, \left(r^2 + 1\right) = 150$ ..

Similarly, rewrite and simplify the second equation:

$\begin{aligned}&a\, r^3 - a\, r\\ &= a\, \left( r^3 - r\right) \\ &= a\, r\, \left(r^2 - 1\right) \end{aligned}$ .

Therefore, the second equation becomes:

$a\, r\, \left(r^2 - 1\right) = 48$ .

Take the quotient between these two equations:

$\begin{aligned}\frac{a\, \left(r^2 - 1\right) \, \left(r^2 + 1\right)}{a\cdot r\, \left(r^2 - 1\right)} = \frac{150}{48}\end{aligned}$ .

Simplify and solve for $r$ :

$\displaystyle \frac{r^2+ 1}{r} = \frac{25}{8}$ .

$8\, r^2 - 25\, r + 8 = 0$ .

Either $\displaystyle r = \frac{25 - 3\, \sqrt{41}}{16}$ or $\displaystyle r = \frac{25 + 3\, \sqrt{41}}{16}$ .

Assume that $\displaystyle r = \frac{25 - 3\, \sqrt{41}}{16}$ . Substitute back to either of the two original equations to show that $\displaystyle a = -\frac{497\, \sqrt{41}}{41} - 75$ .

Calculate the sum of the first five terms:

$\begin{aligned} &a + a\cdot r + a\cdot r^2 + a\cdot r^3 + a \cdot r^4\\ &= -\frac{1522\sqrt{41}}{41} \approx -238\end{aligned}$ .

Similarly, assume that $\displaystyle r = \frac{25 + 3\, \sqrt{41}}{16}$ . Substitute back to either of the two original equations to show that $\displaystyle a = \frac{497\, \sqrt{41}}{41} - 75$ .

Calculate the sum of the first five terms:

$\begin{aligned} &a + a\cdot r + a\cdot r^2 + a\cdot r^3 + a \cdot r^4\\ &= \frac{1522\sqrt{41}}{41} \approx 238\end{aligned}$ .

4 0

3 years ago

Help with these 2 Please

tensa zangetsu [6.8K]

The employees that drive to work is 380

The total number of employees that drive to work is 660

<h3>How many employees drive to work?</h3>

A fraction is a non integer that is made up of a numerator and a denominator. A fraction is used to express the ratio or the relationship between two or more quantities. An example of a fraction is 1/2.

The number of employees that drive to work can be determined by multiplying the fraction of the employees that drive to work by the total number of employees.

Employees that drive to work = 2/3 X 570 = 380

In order to determine the employees that drive to work, take the following steps:

Determine the total number of employees : 3 x 330 = 990

The total number of employees that drive to work: 2/3 x 990 = = 660

To learn more about multiplication of fractions, please check: brainly.com/question/1114498

#SPJ1

8 0

1 year ago