Express the result of the addition as a Hindu-Arabic numeral in expanded form.
A. (5 × 104) + (6 × 103) + (3 × 102) + (4 × 101)
B. (5 × 103) + (6 × 102) + (2 × 101) + (9 × 1)
C. (5 × 104) + (6 × 103) + (2 × 102) + (9 × 101)
D. (5 × 103) + (6 × 102) + (3 × 101) + (4 × 1)
Answer: B
Mathematics
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A PDF for a continuous random variable X is given. Use the PDF to find E(X).f(x) = 
A. 
B. 3
C. 
D. 
Mathematics
Write the compound statement in symbols. Then construct a truth table for the symbolicstatement.Let r = "The food is good," p = "I eat too much,"q = "I'll exercise."The food is good and if I eat too much, then I'll exercise.
A. (r ? p) ? q
| T | T | T T |
| T | T | F F |
| T | F | T T |
| T | F | F T |
| F | T | T T |
| F | T | F T |
| F | F | T T |
| F | F | F T |
B. r ? (p ? q)
| T | T | T F |
| T | T | F F |
| T | F | T T |
| T | F | F T |
| F | T | T F |
| F | T | F T |
| F | F | T F |
| F | F | F F |
C. r ? (p ? q)
| T | T | T T |
| T | T | F F |
| T | F | T T |
| T | F | F T |
| F | T | T F |
| F | T | F F |
| F | F | T F |
| F | F | F F |
D. (r ? p) ? q
| T | T | T T |
| T | T | F F |
| T | F | T T |
| T | F | F F |
| F | T | T T |
| F | T | F F |
| F | F | T T |
| F | F | F F |
Mathematics
Divide.
A. p - 2 + 
B. p - 2
C. p - 5 + 
D. p + 2 + 
Mathematics
Evaluate.Evaluate x + 1 for x = -8.
A. -16 B. -9 C. -7 D. 9
Mathematics