MATH QUIZ
Math 012 Quiz 5
Professor: Dr. Steve McKee
Name________________________________
Instructions:
The quiz is worth 80 points. There are 16 answers, each worth 5 points. Your score on the quiz will be converted to a percentage and posted in your assignment folder with comments.
This quiz is open book and open notes, and you may take as long as you like on it provided that you submit the quiz no later than the due date posted in our course schedule of the syllabus. You may refer to your textbook, notes, and online classroom materials, but you may not consult anyone.
You must show all of your work to receive full credit. If a problem does not seem to require work, write a sentence or two to justify your answer.
Please type your work in your copy of the quiz, or if you prefer, create a document containing your work. Scanned work is also acceptable. Be sure to include your name in the document.
Calculate the root. Round to 3 decimals.
Square root of 278/36 or √278/36
Answer is
The attendants at a parking lot park cars in a temporary space until they are taken to their permanent space. The number (N) of such spaces needed is approximated by the formula N = 2.5√A., where A is the average number of arrivals during peak hours. Find the number of spaces needed when the average number of arrivals is (a) 25 and (b) 89.
First answer is
Second answer is
Basketball is a fun and exciting game. A basketball player’s hang time (time airborne after a leap) T, in seconds, is given by the formula T = 0.1444√V where V is the vertical leap in inches. Johnny “Sky High” Jones can jump 40 inch vertically. Find his hang time.
Answer is
Simplify. Square root of 4a2 – 20 a + 25 or √4a2 – 20 a + 25
Answer is
Simplify by factoring. Square root of 4(x + 5)10 or √4(x + 5)10
Answer is
Multiply and then simplify if possible. Square root 3x times square root 12y or √3x √12y
Answer is
Multiply and then simplify if possible. Square root of 5 times square root of (2x – 1)
or √5 
(2x – 1)
Answer is
Divide and simplify. √63y3/√7y
Answer is
Simplify. √7x23/√343x5
Answer is
The period T of a pendulum is the time it takes the pendulum to move from one side to the other and back. A formula for the period is T = 2π √L/32 where T is in seconds and L is in feet. Use 3.14 for π. Find the periods of pendulum of lengths of (a) 8 feet (b) 100 ft.
Answer (a) is
Answer (b) is
Add and simplify by collecting like radical terms. √72 + √98
Answer is
Multiply. (square root of 2 plus 8)(square root of 2 minus 2) or (
2 + 8)(√2 – 8)
Answer is
Solve. Square root of( 5x + 21) = x + 3 or √(5x + 21) = x + 3
Answer is
Use the formula D = √2h where distance is D in miles and h is height in feet. How far to the horizon can you see through an airplane window at a height or attitude of 27,000 feet?
Answer is
