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Talja [164]
4 years ago
7

74 students were chosen from a local university to participate in a study. Every student attending the university had an equal p

ossibility of being chosen. Which sampling method was used?
voluntary response
random selection
census
sample
Mathematics
1 answer:
a_sh-v [17]4 years ago
4 0
My answer is Random selection
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*Find the measure of an interior angle of a regular polygon with 15 sides. Round to the nearest tenth if necessary.*
Naya [18.7K]

Step-by-step explanation:

Finding a regular polygon with <em>x </em>amount of sides, you use the equation (x-2) to find the amount of triangles. Replace <em>x </em>with 15 and you will get 13. Each triangle has angles that add to 180^{o}, so you would do 180 * 13 to find the total of all of the interior angles, = 2340. Then, divide 2340 by 15, and you will get 156!

6 0
4 years ago
What Is the slope of the line on the graph?
icang [17]

( - 4 - 0)  \div (0 \div 2)
=2
8 0
4 years ago
Read 2 more answers
Work out the value of n 1/8 ÷ √ 2 = 2 n Give your answer as an improper fraction
Alex Ar [27]

Answer:

n = √2/32

Step-by-step explanation:

1/8 : √2 = 2n

1/8×1/√2 = 2n

1/8√2 = 2n

√2/16 = 2n

√2 = 16×2n

32n = √2

n = √2/32

8 0
4 years ago
Can you please help me out
Taya2010 [7]

The bag contains,

Red (R) marbles is 9, Green (G) marbles is 7 and Blue (B) marbles is 4,

Total marbles (possible outcome) is,

\text{Total marbles = (R) + (G) +(B) = 9 + 7 + 4 = 20 marbles}

Let P(R) represent the probablity of picking a red marble,

P(G) represent the probability of picking a green marble and,

P(B) represent the probability of picking a blue marble.

Probability , P, is,

\text{Prob, P =}\frac{required\text{ outcome}}{possible\text{ outcome}}\begin{gathered} P(R)=\frac{9}{20} \\ P(G)=\frac{7}{20} \\ P(B)=\frac{4}{20} \end{gathered}

Probablity of drawing a Red marble (R) and then a blue marble (B) without being replaced,

That means once a marble is drawn, the total marbles (possible outcome) reduces as well,

\begin{gathered} \text{Prob of a red marble P(R) =}\frac{9}{20} \\ \text{Prob of }a\text{ blue marble =}\frac{4}{19} \\ \text{After a marble is selected without replacement, marbles left is 19} \\ \text{Prob of red marble + prob of blue marble = P(R) + P(B) = }\frac{9}{20}+\frac{4}{19}=\frac{251}{380} \\ \text{Hence, the probability is }\frac{251}{380} \end{gathered}

Hence, the best option is G.

5 0
2 years ago
How can u find the slope of a equation
Tomtit [17]

Answer:

It is the rate of change (how far it goes up or how far it goes down)

Step-by-step explanation:

The slope of a line is a measure of how fast it is changing. This can be for a straight line -- where the slope tells you exactly how far up (positive slope) or down (negative slope) a line goes while it goes how far across. Slope can also be used for a line tangent to a curve. Or, it can be for a curved line when doing Calculus, where slope is also known as the "derivative" of a function. Either way, think of slope simply as the "rate of change" of a graph

Example: if you have a slope of 2 your equation would be y=2x+1

You would always do rise over run. rise over run means when you put your slope in a fraction the numerator would always go up or down and the denominator would be run and run means you would go left or right. it all depends on if it is positive or negative.

Hope this helps good luck @(^_^)@

7 0
3 years ago
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