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DiKsa [7]
3 years ago
9

Janine wishes to conduct a poll to predict how many students will vote for her for class president. Which polling methods are li

kely to be biased? Choose all answers that are correct. A. Five people in each of Janine’s classes are selected and asked for whom they intend to vote. B. From a list of all students in Janine’s grade, 25 students are selected at random and asked for whom they intend to vote. C. Every 10th student from a list of all students in Janine’s grade is selected and asked for whom the student intends to vote. D. Janine chooses 5 of her friends and asks each to select another 5 students. These 25 students are asked for whom they intend to vote.
Mathematics
1 answer:
vredina [299]3 years ago
4 0
D since she is asking her friends who are just going to ask their friends
A. since only 5 are asked
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-Dominant- [34]

Answer:

The answer is 67.5!!

Step-by-step explanation:

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3 0
3 years ago
Justin launches a rocket straight up into the air. The table below gives the height(t) of the rocket (in meters) at a few times
Papessa [141]

Using it's formula, the average rates of change are given as follows:

a) 30 meters per second.

b) -10 meters per second.

<h3>What is the average rate of change of a function?</h3>

The average rate of change of a function is given by the <u>change in the output divided by the change in the input.</u> Hence, over an interval [a,b], the rate is given by the following equation:

r = \frac{f(b) - f(a)}{b - a}

For item a, taking the data from the table, we have that:

  • f(0) = 0.
  • f(4.6) = 138.

Hence the rate is given as follows:

r = (138 - 0)/(4.6 - 0) = 30 meters per second.

For item b, taking the data from the table, we have that:

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Hence the rate is given as follows:

r = (0 - 23)/(11.5 - 9.2) = -10 meters per second.

More can be learned about the average rate of change of a function at brainly.com/question/11627203

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3 0
1 year ago
Micheal has 5x as much money minus 25 as mia. togther they have 79.
klemol [59]

Answer:

10

Step-by-step explanation:

5 10 / 15 20 15.......

4 0
3 years ago
Mis Brown graded 84 papers. If the ratio of science papers to math papers is 2:10 how many math papers did she grade?​
mr Goodwill [35]

Answer:

70

Step-by-step explanation:

2 + 10 = 12

84 ÷ 12 = 7

7 x 10 = 70

She graded 70 maths papers and 14 science papers.

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3 years ago
Hi, I need the are to this question, I just need to show my work btw​
Nana76 [90]
What is the question?
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3 years ago
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