#1
Answer: t decrease by 6
#2
Manuela wants to use statistics to determine whether students who attend her high school and eat at the school cafeteria like the food that is served. She plans to select a sample of students from which to gather data to use to analyze her question. Which of the following methods of sample selection will best produce a sample that is representative of Manuela’s population of interest?
#3
In a public speaking class, 26 students presented a speech. The teacher scored each speech from 4 to 9 points. The scatterplot shown represents the relationship between a student’s score, s, in points, and the amount of time, t, in minutes, spent in preparation. The scatterplot shows a strong linear correlation between s and t. Based on the relationship, which of the following is the best estimate of the increase in number of points scored for each hour of additional preparation?
#5
the highlighted triangle has one known angle measure: 110, degrees. This means the sum of the measures of the other two angles is 180-110=70
<RST+ <STR =38 + 70 + 32 = 140
The measure of angle <TRS, 180-140 = 40
#8
#8
#9
u, v,and w are consecutive even integers, and u<v<w, Which of the following can be inferred about the value of v ?
#10
A tour guide is hosting 12 Spanish speakers, 8 Mandarin speakers, and 16 Russian speakers. What is the greatest number of groups the guide can form if each group must have the same number of speakers of each language?
#11
An orchestra has 24 brass, 12 woodwind, and 96 string musicians. What is the greatest number of groups the conductor can form if each group must have the same number of each type of musician?
#12
A group of people divided 95 books equally among themselves so that as few books as possible were left over. If there were 5 books left over, which of the following could have been the number of people in the group?
3, 4, 5 are not correct.
If the books are divided so as few as possible are leftover, the number of people must be greater than the books left over. Otherwise, each person could receive at least one more book.
The number of people in the group must be greater than 5.
6
95-5= 90 books are divided equally among the group.If 90 books are divided equally among 6 people, each person receives 90÷6=15 books.
#13
If the remainder is 2 when the integer n is divided by 12, what is the remainder when n is divided by 6?
I try to use algebra to solve it.
It took me quite time to figure out the solution. Overthink about factors.
#15
I choose B, but I am wrong.
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