Math Problem Statement
Which of the irrational numbers below is greater than -5? Select all that apply. A) -√32 B) -√22 C) -√11 D) -√41
Solution
To solve the problem, we need to determine which of the given irrational numbers is greater than . Let's calculate each one step by step:
Options:
-
- Thus,
-
- Thus,
-
- Thus,
-
- Thus,
Comparing with :
- (less than )
- (greater than )
- (greater than )
- (less than )
Conclusion:
The numbers that are greater than are:
- (Option B)
- (Option C)
Final Answer:
B and C
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Related Questions:
- What is the general rule for comparing square roots of numbers?
- How can you quickly estimate the square root of a number?
- What are irrational numbers, and why are these examples considered irrational?
- How do negative signs impact comparisons in problems involving square roots?
- Can you think of real-world examples where comparing square roots is useful?
Tip:
When comparing square roots of numbers, it is helpful to know approximate values of perfect squares near them (e.g., and ) for faster estimations.
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Math Problem Analysis
Mathematical Concepts
Square Roots
Comparing Numbers
Irrational Numbers
Formulas
Square root approximation
Theorems
Properties of square roots and inequalities
Suitable Grade Level
Grades 8-10