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2 years ago

Decide whether the following scenario is an observational,

Mathematics

1 answer:

VMariaS [17]2 years ago

4 0

The scenario is an observational study, done by the teacher.

The correct option is (B)

<h3>What is Observational study?</h3>

Firstly, A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome.

Survey is defined as the act of examining a process or questioning a selected sample of individuals to obtain data about a service, product, or process.

Experimental research, also called experimentation, is research conducted using a scientific approach using two or more variables.

If we look at the question, the teacher was trying to do the observational study. By observing the students answer.

Learn more about Observational Study here:

brainly.com/question/15938198

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Solve for x<br> pls show work<br> 1/2x + 4 = 1/8x + 88

SVETLANKA909090 [29]

Answer:

224

Step-by-step explanation:

1/2x+4=1/8x+88

1/2x-1/8x+4=88

1/2x-1/8x=88-4

4/8x-1/8x=84

3/8x=84

x=84/(3/8)

x=(84/1)(8/3)

x=672/3

x=224

Please mark me as Brainliest if you're satisfied with the answer.

3 0

2 years ago

Help, these are yes or no answers.

djverab [1.8K]

Answer:

7:yes

8:no

9:yes

10:sorry

Step-by-step explanation:

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3 years ago

matilda is considering getting a credit card and using it instead of cash. which of these is good reason for her to do so?

IrinaK [193]

She will be able to keep track of her purchases easier.

8 0

3 years ago

Read 2 more answers

find the equation of a straight line passing through the point (3,3) which is perpendicular to the line y=-1/2x-4

Mars2501 [29]

Answer:

y = 2x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - $\frac{1}{2}$ x - 4 ← is in slope- intercept form

with slope m = - $\frac{1}{2}$

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{-\frac{1}{2} }$ = 2, thus

y = 2x + c ← is the partial equation

To find c substitute (3, 3) into the partial equation

3 = 6 + c ⇒ c = 3 - 6 = - 3

y = 2x - 3 ← equation of perpendicular line

4 0

3 years ago

Uma caixa contém 40 bolinhas de jogo de tênis, sendo 10 verde, 14 azuis e 16 vermelhas. Retirando uma bola ao acaso da caixa, qu

crimeas [40]

Answer:

p = 15/40

Step-by-step explanation:

Since the total number of marbles is 40, that is our size of the sample. there are 16 red ones on that sample, so the probability of extracting a red marble from the box is given by the ratio of successes divided the total number of marbles:

p = 15/40

3 0

3 years ago