Review for 3wk Assessment
Quiz by Ashley Villanueva
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- Q1
What is the solution to the equation (2x − 5)= 19 − 6x?
x= 1
x=3
x= 3
x= -3
300s - Q2
What is the solution to this equation?
3(0.1x + 2) = 14.8 − 0.8x
Users enter free textType an Answer300s - Q3
Wally is practicing to run the quarter mile race in an upcoming track meet. He wrote down his times, in seconds, during practice. His data is shown.
65, 92, 71, 83, 86, 69, 79, 90
What is the mean absolute deviation of the data?
2.88
28.8
2
15.1
300s - Q4
What value of x makes this equation true?
1 + 2(x − 5) = 3(x − 1)
Users enter free textType an Answer300s - Q5
Javier and his brother Antonio are selling bags of popcorn to raise money for their baseballteam to travel to Florida for a tournament.
• Javier is selling his bags of popcorn for $7.50 each and has already raised $120.00.
• Antonio is selling his bags of popcorn for $6.00 each and has already raised $162.00.
Which equation can be used to determine x, the number of bags of popcorn Javier andAntonio must each sell, so that the total amount of money they raise is the same?
7.50x + 120 = 6x + 162
120 − 7.50x = 162 − 6x
7.50x − 120 = 6x − 162
120x + 7.50 = 162x + 6
300s - Q6
Mrs. Feinstein recorded the weight, in pounds,of each of her 8 great grandchildren. Her datais shown.
45, 52, 31, 27, 38, 60, 44, 55
What is the mean absolute deviation of the data?
Users enter free textType an Answer300s - Q7
Seth wants to find out if students at Hillsboro High School go to the football games. He decides to take a sample rather than ask every student. He asks the first15 freshmen leaving the library. Which statement about the sample is true?
This sample is representative of the population.
This sample is not a random sample.
This sample includes the entire student population
This sample gives all students an equal chance of being selected.
300s - Q8
The side lengths of a triangle and a rectangle are shown in the diagram.
The perimeter of the triangle is equal to the perimeter of the rectangle. What is the value of x?
Users enter free textType an Answer300s - Q9
Mrs. Williams wants to determine which year-end celebration to choose for the students. She wants student input, so she needs to choose a sample of 20 students from the school. Which of the samples shown is a random sample?
Choose the 20 students who volunteer for the school fundraising eventthis Friday.
Give every student a number and select 20 numbers from a box without looking.
Choose the first 20 students to arrive in the library in the morning.
Choose the first 20 students from an alphabetized school roster.
300s - Q10
Sylvia has a solid red plastic container with 45 wooden shapes inside of it. She wants toselect 6 shapes at random. She proposed that she should just reach in and pull out 6 shapeswithout looking. Why will this NOT produce a random sample?
This will not produce a random sample because she can feel the shapes when she reaches in to pull a shape from the container.
This will not produce a random sample because she is not looking when she pulls a wooden shape from the container.
This will not produce a random sample because the more colorful shapes are more likely to be selected since she can see them when she pulls a shape from the container.
This will not produce a random sample because the larger shapes are more likely to be selected when she reaches in the container because of their size.
300s - Q11300s
- Q12300s
