Find the mass of the wire that lies along the curve r and has density ?.r(t) = 
i + 4tj, 0 ? t ? 1; ? = 3t
A. 
units
B. 
units
C. 
units
D. 
units
Answer: B
Mathematics
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Determine if the given value is a solution to the given equation.9,
3(x - 4) = 19
A. Yes B. No
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Solve the equation.
- 3x = 0
A. x = ±5 B. x = 4 C. x = 8 D. x = ±4
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Find the optimal row or column strategy of the matrix game.Let M be the matrix game having payoff matrix 
.Find the optimal column strategy.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Find the probability.A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing a heart, club, or diamond?
A. 3
B. 
C. 
D. 
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