Precalculus Discusson and Quiz

Week 8 "Limits" Take Test: W8 Final H Survey Student End of Course Survey 201539 forward has been made available to this course. Only one submission will be accepted per respondent. Take SurveyTake Survey

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Find the sum.

1175 1037.5 1075 1262.5

Q U E S T I O N 1 2 points Save AnswerSave Answer

 Find the sum. 1 + 2 + 3 + ... + 461

212,982 106030

Q U E S T I O N 2 2 points Save AnswerSave Answer

??

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212,521

Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given. a = -3; d = 3an = ?;  a10 = ?

an = -6 + 3n;  a10 = 24 an = -6 - 3n;  a10 = 24 an = -6 + 3n;  a10 = 36 an = -3 + 3n;  a10 = 24

Q U E S T I O N 3 2 points Save AnswerSave Answer

Find the exact value. Do not use a calculator. sin (- )

0 -1 1 undefined

Q U E S T I O N 4 2 points Save AnswerSave Answer

Solve the system of equations by substitution.

x = 2, y = 9; (2, 9) x = 3, y = 8; (3, 8) x = 2, y = 8; (2, 8) x = 3, y = 9; (3, 9)

Q U E S T I O N 5 2 points Save AnswerSave Answer

Solve the problem. Q U E S T I O N 6 2 points Save AnswerSave Answer

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 Solve the problem. Two 6-sided dice are rolled. What is the probability the sum of the two numbers on the dice will be 4?

3

Q U E S T I O N 7 2 points Save AnswerSave Answer

 Solve the problem. A 6-sided die is rolled. What is the probability of rolling a number less than 2?

Q U E S T I O N 8 2 points Save AnswerSave Answer

Solve the system of equations by elimination. Q U E S T I O N 9 2 points Save AnswerSave Answer

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x = -19, y = 4; (-19, 4) x = -19, y = 8; (-19, 8) x = -2, y = 19; (-2, 19) x = 19, y = -2; (19, -2)

 Find the sum. 2 + 4 + 6 + ... + 582

84,681 84,390 85,264 84,972

Q U E S T I O N 1 0 2 points Save AnswerSave Answer

Solve the system of equations by elimination.

x = -5, y = 5; (-5, 5) x = 11, y = -11; (11, -11) x = -6, y = 5; (-6, 5) x = 5, y = -5; (5, -5)

Q U E S T I O N 1 1 2 points Save AnswerSave Answer

Find the domain of the function.

all real numbers {x|x > 6} {x|x ≥ 6} {x|x ≠ 6}

Q U E S T I O N 1 2 2 points Save AnswerSave Answer

Q U E S T I O N 1 3 2 points Save AnswerSave Answer

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Use a table and/or a graph to decide whether the limit exists. If it exists, find its value.

0 -4 Does not exist 4

Find the standard form of the equation of the hyperbola satisfying the given conditions. Endpoints of transverse axis: (0, -10), (0, 10); asymptote: y = x

- = 1 - = 1 - = 1 - = 1

Q U E S T I O N 1 4 2 points Save AnswerSave Answer

 Solve the problem. In how many ways can 7 people each have different birth months?

84 35,831,808 792 3,991,680

Q U E S T I O N 1 5 2 points Save AnswerSave Answer

 

Solve the problem. How many different license plates can be made using 3 letters followed by 3 digits selected from the digits 0 through 9, if digits may be repeated but letters may not be repeated? 

Q U E S T I O N 1 6 2 points Save AnswerSave Answer

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3095.2381 17,576,000

Find the exact value. Do not use a calculator. cos  

1 0 -1 undefined

Q U E S T I O N 1 7 2 points Save AnswerSave Answer

Perform the indicated operation(s), whenever possible.

Let A =  and B = . Find A + B.

Q U E S T I O N 1 8 2 points Save AnswerSave Answer

Solve the system of equations by elimination.

x = 16, y = ; 

Q U E S T I O N 1 9 2 points Save AnswerSave Answer

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x = 18, y = ;  x = -18, y = - ;  x = -16, y = - ; 

 Solve the problem. How many 4-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0? No digit can be used more than once.

210 5040 151,200 302,400

Q U E S T I O N 2 0 2 points Save AnswerSave Answer

 Find the sum. 3 + 6 + 9 + ... + 294

 14553 14406 14259

Q U E S T I O N 2 1 2 points Save AnswerSave Answer

Perform the indicated operations and simplify.

Let A =  , B =  , and C = . Find AB + BC.

Q U E S T I O N 2 2 2 points Save AnswerSave Answer

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 Solve the problem. How many different 4-letter codes are there if only the letters A, B, C, D, E, F, G, H, and I can be used and no letter can be used more than once?

3024 6561 126 4

Q U E S T I O N 2 3 2 points Save AnswerSave Answer

 Solve the problem. A group of 12 friends goes bowling. How many different possibilities are there for the order in which they play if the youngest person is to bowl first? 

11 39,916,800 12 479,001,600

Q U E S T I O N 2 4 2 points Save AnswerSave Answer

Use a table and/or a graph to decide whether the limit exists. If it exists, find its value.

0 Does not exist 4 8

Q U E S T I O N 2 5 2 points Save AnswerSave Answer

Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given. a = 4; d = -7an = ?;  a16 = ?

an = 11 - 7n;  a16 = -52 an = 11 + 7n;  a16 = -101

Q U E S T I O N 2 6 2 points Save AnswerSave Answer

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an = 11 - 7n;  a16 = -101

 Find the exact value. Do not use a calculator. tan (-π)

-1 1 0 undefined

Q U E S T I O N 2 7 2 points Save AnswerSave Answer

Solve the system of equations by substitution.

x = 10, y = 10; (10, 10) x = 10, y = 0; (10, 0) x = 0, y = 0; (0, 10) x = 0, y = 10; (0, 10)

Q U E S T I O N 2 8 2 points Save AnswerSave Answer

 Find the standard form of the equation of the hyperbola satisfying the given conditions. Foci: (0, -10), (0, 10); vertices: (0, -6), (0, 6)  

- = 1 - = 1 - = 1 - = 1

Q U E S T I O N 2 9 2 points Save AnswerSave Answer

Q U E S T I O N 3 0 2 points Save AnswerSave Answer

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Let A =  and B = . Find A - B.

[-2]

Solve the system of equations by elimination.

x = -4, y = 0; (-4, 0) x = 0, y = -4; (0, -4) x = 4, y = 0; (4, 0) x = 0, y = 4; (0, 4)

Q U E S T I O N 3 1 2 points Save AnswerSave Answer

Solve the system of equations by substitution.

x = 3, y = -3; (3, -3) x = -3, y = 0; (-3, 0) x = -3, y = 3; (-3, 3) x = -3, y = -3; (-3, -3)

Q U E S T I O N 3 2 2 points Save AnswerSave Answer

Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.

Q U E S T I O N 3 3 2 points Save AnswerSave Answer

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x = 6, y = -2; (6, -2) x = -2, y = -6; (-2, -6) x = -2, y = 6; (-2, 6) inconsistent

Solve the system of equations by substitution.

x = 12, y = -2; (12, -2) x = 7, y = 12; (7, 12) x = 3, y = 7; (3, 7) x = -2, y = 3; (-2, 3)

Q U E S T I O N 3 4 2 points Save AnswerSave Answer

 Solve the problem. 12 different books are to be arranged on a shelf. How many different arrangements are possible?

39,916,800 12 479,001,600 239,500,800

Q U E S T I O N 3 5 2 points Save AnswerSave Answer

Solve the system of equations by substitution.

x = 2, y = 11; (2, 11) x = 2, y = -11; (2, -11) x = 9, y = -11; (9, -11) x = 9, y = 2; (9, 2)

Q U E S T I O N 3 6 2 points Save AnswerSave Answer

Q U E S T I O N 3 7

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334,084 332,929 333,506 331,776

2 points Save AnswerSave Answer

Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.

inconsistent x =2, y =2; (2, 2) x =-1, y =5; (-1, 5) x =2, y =5; (2, 5)

Q U E S T I O N 3 8 2 points Save AnswerSave Answer

 Find the sum. -3 + 1 + 5 + 9 + 13 + ... + (4n - 7)

n(4n + 7) n(2n + 5) n(2n - 5) n(4n - 7)

Q U E S T I O N 3 9 2 points Save AnswerSave Answer

 Find the exact value. Do not use a calculator. tan (28π)

-1 0 1 undefined

Q U E S T I O N 4 0 2 points Save AnswerSave Answer

Q U E S T I O N 4 1 2 points Save AnswerSave Answer

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Find the domain of the function. h(x) =

{x|x ≠ -8, 0, 8} {x|x ≠ 2} {x|x ≠ 0} all real numbers

Find the domain of the function. f(x) =

{x|x ≤ } {x|x ≠ } {x|x ≠ 23} {x|x ≤ 23}

Q U E S T I O N 4 2 2 points Save AnswerSave Answer

 Solve the problem. How many different license plates can be made using 3 letters followed by 4 digits selected from the digits 0 through 9, if neither letters nor digits may be repeated? 

47,174,400 175,760,000 78,624,000 546,000

Q U E S T I O N 4 3 2 points Save AnswerSave Answer

Find the domain of the function. g(x) =

{x|x ≠ 0} all real numbers {x|x > 49} {x|x ≠ -7, 7}

Q U E S T I O N 4 4 2 points Save AnswerSave Answer

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Solve the system of equations by elimination.

x = 10, y = 10; (10, 10) x = 10, y = 0; (10, 0) x = 0, y = 10; (0, 10) x = 0, y = 0; (0, 0)

Q U E S T I O N 4 5 2 points Save AnswerSave Answer

 Solve the problem. A bag contains 15 balls numbered 1 through 15. What is the probability of selecting a ball that has an even number when one ball is drawn from the bag?

7

Q U E S T I O N 4 6 2 points Save AnswerSave Answer

 Find the sum. (-6) + (-1) + 4 + 9 + ... + 39

160 170 330 165

Q U E S T I O N 4 7 2 points Save AnswerSave Answer

Perform the indicated operations and simplify.

Let A = , B = , and C = . Find C(A - B).

Q U E S T I O N 4 8 2 points Save AnswerSave Answer

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Click Save and Submit to save and submit. Click Save All Answers to save all answers.

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 Find the standard form of the equation of the hyperbola satisfying the given conditions. Foci: (-5, 0), (5, 0); vertices: (-3, 0), (3, 0)  

- = 1 - = 1 - = 1 - = 1

Q U E S T I O N 4 9 2 points Save AnswerSave Answer

Solve the system of equations by substitution.

x = 1, y = 0; (1, 0) x = 0, y = 0; (0, 0) x = 1, y = 1; (1, 1) x = 0, y = 1; (0, 1)

Q U E S T I O N 5 0 2 points Save AnswerSave Answer Question Completion Status:

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