Evaluate each expression, where and indicate addition and subtraction, respectively, using a 12-hour clock. a. 87 b. 209

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 90E
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1. Evaluate each expression, where O and e indicate
addition and subtraction, respectively, using a 12-hour
clock.
а. 87
b. 2 e9
2. January 1, 2017, was a Sunday. What day of the week is
January 1, 2026?
3. Determine whether the congruence is true or false.
a. 8 = 20 mod 3
b. 61 = 38 mod 7
In Exercises 4 to 6, perform the modular arithmetic.
4. (25 + 9) mod 6
5. (31 – 11) mod 7
-
Transcribed Image Text:1. Evaluate each expression, where O and e indicate addition and subtraction, respectively, using a 12-hour clock. а. 87 b. 2 e9 2. January 1, 2017, was a Sunday. What day of the week is January 1, 2026? 3. Determine whether the congruence is true or false. a. 8 = 20 mod 3 b. 61 = 38 mod 7 In Exercises 4 to 6, perform the modular arithmetic. 4. (25 + 9) mod 6 5. (31 – 11) mod 7 -
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