
The correct word or phrase to fill in the blank.

Answer to Problem 1PE
Solution:
The word/phrases which can be filled in the blanks of each statement can be given as:
- Set.
- Inequalities.
- a is less than b.
- c is greater than d.
- 5 is not equal to 6.
- Infinity, Negative infinity
- {x|x>5}, Interval.
- Excludes, includes.
- Parenthesis.
Explanation of Solution
(a) In mathematics, a well-defined collection of elements is called a Set.(b) The statements a<b, a>b, and a≠b are examples of Inequalities.
(c) The statement a<b is read as “ais less thanb”.
(d) The statement c≥d is read as “cis greater than or equal tod”.
(e) The statement 5≠6 is read as “5 is not equal to 6”.
(f) The symbol ∞ represents Infinityand −∞ represents Negative infinity.(g) The set of real numbers greater than 5 can be written in set-builder notation as {x|x>5}_ and in Intervalnotation as (5, ∞) .
(h) We know that parentheses) or (indicate that an endpoint is excluded from the set. And the square bracket ] or [ indicates that an endpoint is included in the set.
Thus, the interval (−2, 5]excludesthe value −2 and includesthe value 5.
(i) When expression interval notation, use a parenthesiswith infinity.
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Chapter R2 Solutions
Intermediate Algebra
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