Math assignment is very important please

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Mathematics

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1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the results of his experiment. Outcome Frequency Red Blue Green Yellow 10 5 13 7 Use the results of this experiment to find each probability. Write each answer as a fraction in lowest terms. a. Find the experimental probability that the next marble he chooses is yellow. b. Find the experimental probability that the next marble he chooses is either blue or red. Answer: 2. A newspaper editor wants to know whether people who buy the newspaper like the paper’s new format. He prints an alphabetical list of all the employee names and asks every fifth person on the list. Is the sample likely to be biased or unbiased? Explain your answer. Answer: Score 1. Ms. Chang has 24 students in her class, and 8 of them are boys. What is the ratio of boys to girls? 1:2 1:3 2:1 2:3 Question 2. The temperature of an oven went from 330° to 396°. What was the percent increase in temperature? 2% 16.6% 20% 66% Question 3. What is the slope of line m? (Points : 5) 2 0.5 0.5 2 Question 4. If f(x) = 0.5(3 x), what is the value of f( 3)? (Points : 5) 3 1.5 0.5 0 Question 5. Use PQR to answer the question. What is cos P? (Points : 5) Option A: Option B: Option C: Option D: Question 6. The vertices of a quadrilateral are (0, 2), (4, 2), ( 3, 0), and (5, 0). What type of quadrilateral is it? (Points : 5) rectangle parallelogram rhombus trapezoid Question 7. What is the circumference of the circle? Use centimeter. (Points : 5) 17.3 cm 22.0 cm 34.5 cm 69.1 cm Question 8. Which is equal to (Points : 5) Option A: Option B: Option C: Option D: ? = 3.14. Round your answer to the nearest tenth of a Question 9. A ramp leads up to a building. The top of the ramp is 5 feet above the ground, and the bottom is 20 feet from the building, as shown. What is the length of the ramp? Round your answer to the nearest tenth of a foot. (Points : 5) 20.6 ft 21.6 ft 23 ft 25 ft Question 10.. A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates ( 4, 1), (1, 1), and (1, (Points : 5) 30 25 18 17 11). What is the perimeter of the triangle? Question 11.. What is the volume of the right prism? (Points : 5) 1200 in3 600 in3 400 in3 50 in3 Question 12.. What is the surface area of the cube? (Points : 5) 400 cm2 800 cm2 2400 cm2 8000 cm2 Question 13.. A right cylinder has a diameter of 30 mm and a height of 30 mm, as shown. What is the volume of the cylinder? (Points : 5) 27,000 mm3 21,195 mm3 2826 mm3 1413 mm3 Question 14.. Simplify: (Points : 5) 5 20 40 120 Question 15. Mr. Davis has 15 students in his class. He wants to send 3 of his students to pick up books for the class. How many combinations of students can he choose? (Points : 5) 45 210 455 2730 Question 16. A jar contains 8 nickels, 10 dimes, 12 quarters, and 22 pennies. A coin is chosen at random from the jar. What is the probability that the coin chosen is a penny? (Points : 5) Option A: Option B: Option C: Option D: Question 17. The data represent the number of phone calls received over an 8-day period. What is the mean number of phone calls received? (Points : 5) 6.6 11 5 5.75 Question 18. The data below represent the ages of people working at a store. 18, 26, 19, 25, 19, 23, 31, 22, 19, 18, 20 What is the first quartile of these ages? (Points : 5) 19 20 22 23 Question 19. 22, 22, 29, 30, 31, 31, 34, 34, 40, 45, 46, 50 Which stem-and-leaf plot represents this data set? (Points : 5) Option A: Option B: Option C: Option D: Question 20. 20. The histogram shows the number of people who participated in a survey. How many people over the age of 39 participated in the survey? (Points : 5) 60 90 130 150
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