Question 1

Write the union as a single interval.

Accepted Answer

The answer of Write the union as a single interval.
...

Question 2

Let   . Find a number B such that A + B is rational.

Accepted Answer

A)   
B)   
C)   
D)

Question 3

Perform the indicated operation.

Accepted Answer

The answer of Perform the indicated operation.
 ...

Question 4

Simplify the given expression as much as possible.
7(m + 7n) + 6m

Accepted Answer

The answer of Simplify the given expression as much as...

Question 5

Write the set as an interval or as the union of two intervals.

Accepted Answer

The answer of Write the set as an interval or...

Question 6

Simplify the given expression as much as possible.

Accepted Answer

The answer of Simplify the given expression as much as...

Question 7

Find all numbers x satisfying the equation.

Accepted Answer

The answer of Find all numbers x satisfying the equation.
...

Question 8

Find all numbers with absolute value 6.

Accepted Answer

The answer of Find all numbers with absolute value 6....

Question 9

Let   . Find an irrational number B such that the product AB is rational

Accepted Answer

A) 
  
B) 
  
C) 
  
D)

Question 10

Perform the indicated operation.

Accepted Answer

The answer of Perform the indicated operation.
 ...

Question 11

Let   . Find a number B such that A + B is irrational.

Accepted Answer

A)  4 
B)   
C)   
D)  All of them

Question 12

Which of the following alternatives corresponds to the interval (2, 9]?

Accepted Answer

A)   
B)   
C)   
D)

Question 13

Which of the following intersections corresponds to the interval [-1, 5)?
I
 
II
 
III

Accepted Answer

A)  I 
B)  II 
C)  I and II 
D)  II and III

Question 14

Let   and   . Find a number C such that A + B + C equals 10.

Accepted Answer

The answer of Let   and   ....

Question 15

The division of an irrational number and a non-zero rational number is irrational.

Accepted Answer

A) True 
 B)False

Question 16

Expand the given expression. (x - 2y + 3z)²

Accepted Answer

The answer of Expand the given expression.
(x - 2y +...

Question 17

Which of the following is true?

Accepted Answer

A) 
  
B)  3x - x = 0 
C) 
  
D)

Question 18

For which values of a does the expression Correspond to a rational number?

Accepted Answer

A)  0, 1 
B)  -13, 13 
C)  0, 13 
D)  1, 13

Question 19

Find the smallest positive number b such that 
  is rational.

Accepted Answer

The answer of Find the smallest positive number b such...

Question 20

Which of the following expressions equals 7x - y?
I. 7(x - 2y) + 2(7 - 1)y + y
II. 2y + 7(x - 1) + (7 - 3y)
III. 2(7x - y) + (y - 7x)

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  I, II, and III

Exam 1: The Real Numbers

Write the union as a single interval.

Let . Find a number B such that A + B is rational.

Perform the indicated operation.

Simplify the given expression as much as possible. 7(m + 7n) + 6m

Write the set as an interval or as the union of two intervals.

Simplify the given expression as much as possible.

Find all numbers x satisfying the equation.

Find all numbers with absolute value 6.

Let . Find an irrational number B such that the product AB is rational

Perform the indicated operation.

Let . Find a number B such that A + B is irrational.

Which of the following alternatives corresponds to the interval (2, 9]?

Which of the following intersections corresponds to the interval [-1, 5) ? I II III

Let and . Find a number C such that A + B + C equals 10.

The division of an irrational number and a non-zero rational number is irrational.

Expand the given expression. (x - 2y + 3z)²

Which of the following is true?

For which values of a does the expression Correspond to a rational number?

Find the smallest positive number b such that is rational.

Which of the following expressions equals 7x - y? I. 7(x - 2y) + 2(7 - 1) y + y II. 2y + 7(x - 1) + (7 - 3y) III. 2(7x - y) + (y - 7x)

Exam 1: The Real Numbers

Write the union as a single interval.

Let . Find a number B such that A + B is rational.

Perform the indicated operation.

Simplify the given expression as much as possible. 7(m + 7n) + 6m

Write the set as an interval or as the union of two intervals.

Simplify the given expression as much as possible.

Find all numbers x satisfying the equation.

Find all numbers with absolute value 6.

Let . Find an irrational number B such that the product AB is rational

Perform the indicated operation.

Let . Find a number B such that A + B is irrational.

Which of the following alternatives corresponds to the interval (2, 9]?

Which of the following intersections corresponds to the interval [-1, 5) ? I II III

Let and . Find a number C such that A + B + C equals 10.

The division of an irrational number and a non-zero rational number is irrational.

Expand the given expression. (x - 2y + 3z)2

Which of the following is true?

For which values of a does the expression Correspond to a rational number?

Find the smallest positive number b such that is rational.

Which of the following expressions equals 7x - y? I. 7(x - 2y) + 2(7 - 1) y + y II. 2y + 7(x - 1) + (7 - 3y) III. 2(7x - y) + (y - 7x)

Expand the given expression. (x - 2y + 3z)²