Mathematics, 05.02.2020 07:50 sandygarcia65

What is the best way to gather information for each of the scenarios?

select survey, experiment, or observational study for each scenario.

What is the best way to gather information for each of the scenarios? select survey, ex

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Answer from: liliaboop2012

1.Observation study

2.Survey

3.Experiment

4.Survey

Hope thiz Help:)

Answer from: asenath6477

Survey, observational study, observational study, survey

Step-by-step explanation:

In a observational study, the sample is only observed. No variables are controlled.In a survey, information is obtained directly from the sample, using a questionnaire to measure opinions.In an experiment, variables are controlled by design to study a link of causation.

In the first one, the director wants to know what his singers do before a performance. The director cannot observe each singer at the same time, so he should use a survey.

In the second one, the director wants to know who his best soprano is. The best way to determine this is by simply observing. Observational study.

In the third one, the directer wants to know how verbally disciplining a singer affects the group. Again, the best way to determine this is by observing. Observational study.

In the fourth one, the director wants to know what musical is the most popular. This of course requires a survey.

Answer from: Quest

the system of inequity is

$y\leq -x+4$

$3y> x$

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

the solid line passing through the points (0,4) and (4,0).

$y-4=\frac{0-4}{4-0}(x-0)$

$y=-x+4$

the related equation of solid line is $y=-x+4$ .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

$y-0=\frac{0-1}{3-0}(x-0)$

$3y=x$

the related equation of dashed line is $3y=x$

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

$1=-0+4$

$1=4$

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be $\leq$ . the required inequality is

$y\leq -x+4$

similarly, check the second related equation.

$3(1)=0$

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

$3y> x$

15 points write a system of inequalities to represent the shaded portion of the graph

Answer from: Quest

Dbc if u do the math and stuff that what i got let me know if i was wrong

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What is the best way to gather information for each of the scenarios?

select survey, ex...

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