kdenormandie3122
10.04.2020 •
Mathematics
A school principal wants to know what theme students prefer for the spring dance. There are 150 students in the 6th grade, 200 students in the 7th grade, and 187 students in the 8th grade. Select all the representative samples that can help the principal draw conclusions about which themes the students prefer.
A)The students in the 7th grade homerooms
B)The same number of students from each grade whose names are randomly selected from a hat
C)The members of the student council
D)Students who attended the winter dance
E)50 sixth graders, 67 seventh graders, and 62 eighth graders
Solved
Show answers
More tips
- A Auto and Moto How to Start a Diesel Engine in Cold Weather?...
- F Family and Home How to Remove Tar Stains: Tips and Recommendations from Experts...
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- S Sport How to Do a Jumping Split...
- H Health and Medicine How Did Inna Lose Weight on Dom 2?...
- F Family and Home How to Properly Fold Napkins in a Napkin Holder?...
- F Food and Cooking How to Set Up Ventrilo - The Ultimate Guide...
- S Science and Technology How to Make a Homemade Smoker: The Ultimate Guide...
- A Auto and Moto Battle for the Relocation of The Cherkizovsky Market: Who Won?...
- C Computers and Internet How Do You Refill Cartridges?...
Answers on questions: Mathematics
- M Mathematics Someonewhat is the vertex of yvt a) q b) v c) y d) t...
- M Mathematics Multiplication property of inequality -1/2x -12 simplify it all the way through...
- M Mathematics Aline with a slope of 1/4 passes through the points (5 , y) (-3 , 4). find the value of y....
- M Mathematics What does this value refers to? and pls explains what - refers to? is it telling that the whole fraction is negative? or is it telling that the numerator/denominator...
- M Mathematics How can i write a proportion using a 3-d model like this...
- M Mathematics M-x=p+n, for xhow do i solve step by step...
- M Mathematics Rachel flips a coin 150 times and finds that the probability of the coin landing heads up is rachel wants to flip the same coin 15 more times. on the first 14 flips,...
- M Mathematics Answer this.. the answer and also be “not a real number”...
- M Mathematics The freezing point of helium is -468 degrees fahrenheit. if you increase that temperature by 569.7 degrees fahrenheit, you reach the freezing point of phosphorus. what...
- M Mathematics 6. identify an equation that models the situation and find its solution. it’s going to be lindsay’s birthday soon, and her friends mary, jacqui, tadeusz, opal, and tony...
Ответ:
B) The same number of students from each grade whose names are randomly selected from a hat
E) 50 sixth graders, 67 seventh graders, and 62 eighth graders
Step-by-step explanation:
B) The reason B is correct is because if all grades get to pick, with the same amount of people from each grade, it would be fair for most, if not all, students.
E) E is correct because of percentages. Let me show you.
6th Grade | 150 Total Students | 50 Students Vote | 33.3% of 150 is 49.95. Round to the nearest whole to get 50.
7th Grade | 200 Total Students | 67 Students Vote | 33.3% of 200 is 66.6. Round to the nearest whole to get 67
8th Grade | 187 Total Students | 62 Students Vote | 33.3% of 187 is 62.271. Round to the nearest whole to get 62.
Ответ:
3t - 5t = 7 ( by re-arranging)
-2t = 7
t = -7/2
Thus, 6 t = 6( -7/2)
= -42/2
= -21
Thus, t = -21