Pre Algebra Exam

Anonymous
timer Asked: Jun 28th, 2018
account_balance_wallet $10

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Pre-Algebra Quarter 4 Exam Score: ______ / ______ Name: ______________________________ Student Number: ______________________ 1. Elsie is making a quilt using quilt blocks like the one in the diagram. a. How many lines of symmetry are there? b. Does the quilt square have rotational symmetry? If so, what is the angle of rotation? 2. Lisa and Bart spin this spinner 60 times. The results are below: a) What is the experimental probability of a spin of orange? b) Which color had an experimental probability that matched its theoretical probability? Pre-Algebra Quarter 4 Exam 3. Use the diagram below to answer the following questions. a. Name three points. b. Name four different line segments. ⃡ . c. Write two other names for 𝐹𝐺 d. Name two different rays. 4. Charlie is at a small airfield watching for the approach of a small plane with engine trouble. He sees the plane at an angle of elevation of 32. At the same time, the pilot radios Charlie and reports the plane’s altitude is 1,700 feet. Charlie’s eyes are 5.2 feet from the ground. Find the ground distance from Charlie to the plane. Show how you know. Pre-Algebra Quarter 4 Exam _____5. Jason and Kyle both choose a number from 1 to 10 at random. What is the probability that both numbers are odd? A. 1 B. 1 C. 1 D. 1 3 2 4 8 6. Identify the number as rational or irrational. Explain. -√127 7. Jeremy is building a large deck for a community center. The deck is shaped as a rectangle. The width of the deck is 29 feet. The perimeter of the deck is to be at least 134 feet. a. Write an inequality that represents all possible values for the length of the deck. b. Solve algebraically to find all possible values for the length of the deck. Pre-Algebra Quarter 4 Exam 8. Caitlin had $402 in her bank account. She withdrew $15 each week to pay for a swimming lesson. She now has $237. a. Write an equation that can be used to find the number of swimming lessons that she paid for. b. Find the number of swimming lessons she paid for. c. The cost of a swimming lesson rises to $19. How many lessons can she pay for with the remaining $237? 9. Is a triangle with sides of length 6 ft., 21 ft., 23 ft. a right triangle? Show how you know. 10. Identify the number as rational or irrational. Explain. 291.87 Pre-Algebra Quarter 4 Exam 11. Is the sequence 5, 9, 15, ... an arithmetic sequence? Explain. 12. Suppose a computer virus begins by infecting 8 computers in the first hour after it is released. Each hour after that, each newly infected computer causes 8 more computers to become infected. The function y = 8x models this situation. Make a table with integer values of x from 1 to 4 in the space below. 13. Here is an interesting exponential function, 𝑦 = 1 𝑥 . Complete the table with integer values of x from 0 to 4. Then graph the function. 𝑦 = 1𝑥 X 0 1 2 3 4 Y Does the graph show exponential growth, exponential decay, or neither? Explain your thinking. Pre-Algebra Quarter 4 Exam 1 3 _____14. Tell whether the sequence , 0, 1, −2 … is arithmetic, geometric, or neither. Find the next three terms of the sequence. A. neither; 7, -20, 61 B. geometric;7, -20, 61 1 1 3 3 1 5 7 geometric;−3 3 , −5 9 , −9 27 C. arithmetic; − , 1 , 3 D. 15. Is the sequence 3, 12, 36, ... a geometric sequence? Explain. 16. Which graph represents a function? How do you know? Pre-Algebra Quarter 4 Exam 17. A building lot in a city is shaped as a 30°-60°-90° triangle, like the figure shown. The side opposite the 30° angle measures 41 feet. a. Find the length of the side of the lot opposite the 60° angle. Show how you know. b. Find the length of the hypotenuse of the triangular lot. Show how you know. 18. The scatter plot shows the study times and test scores for a number of students. How long did the person who scored 81 study? A. 50 minutes B. 81 minutes C. 16 minutes D. 100 minutes Pre-Algebra Quarter 4 Exam 19. If you know the number of yards for a measurement, you can change that measure to meters by multiplying the number of yards by 0.9144. a. Write a function rule that relates meters to yards. b. How many meters are equivalent to 7,200 yards? Round your answer to the nearest hundredth, if necessary. c. How many yards are equivalent to 2,500 meters? Round your answer to the nearest hundredth, if necessary. _____20. Morty needs $480 to buy a TV and stereo system for his room. He received $60 in cash for birthday presents. He plans to save $30 per week from his part-time job. The equation model for this situation is 60 + 30w = 480. How many weeks (w) will take for him to have $480. A. 16 weeks B. 13 weeks C. 15 weeks D. 14 weeks

Tutor Answer

Accounting_Teacher
School: Cornell University

Hi, here is the solutions ad answers of your exam :). goodluck ;)

Pre-Algebra Quarter 4 Exam
Score: ______ / ______
Name: ______________________________
Student Number: ______________________

1. Elsie is making a quilt using quilt blocks like the one in the diagram.

a. How many lines of symmetry are there?
Answer:
- There are 4 lines of symmetry

b. Does the quilt square have rotational symmetry? If so, what is the angle of rotation?
Answer:
- Yes. The angle of rotation is 900, 1800, and 2700
2. Lisa and Bart spin this spinner 60 times. The results are below:

Pre-Algebra Quarter 4 Exam

a) What is the experimental probability of a spin of orange?

Answer:
21÷60= 0.35 x 100 =35%
Therefore, the probability of a spin of orange is 35%

b) Which color had an experimental probability that matched its theoretical probability?
Answer:
The answer is blue because each color has the theoretical probability of 25
percent., in which, 15÷60=0.25 x 100 = 25%

3. Use the diagram below to answer the following questions.

a. Name three points.
Answer:
The three points are:
- D, G and, C.

Pre-Algebra Quarter 4 Exam

b. Name four different line segments.
Answer:
The four different line segments are as follows:





FD
DG
DC
FG

⃡ .
c. Write two other names for 𝐹𝐺
Answer:
FD, GF
d. Name two different rays.
Answer:
FG, and DF

4. Charlie is at a small airfield watching for the approach of a small plane with engine trouble.
He sees the plane at an angle of elevation of 32. At the same time, the pilot radios Charlie
and reports the plane’s altitude is 1,700 feet. Charlie’s eyes are 5.2 feet from the ground.
Find the ground distance ...

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Anonymous
Wow this is really good.... didn't expect it. Sweet!!!!

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