Solve.x + y + z = 6x - z = -2 y + 3z = 11
A. (0, 1, 2)
B. (1, 2, 3)
C. no solution
D. (-1, 2, -3)
Answer: B
Mathematics
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Use a definite integral to find an expression that represents the area of the region between the given curve and the x-axis on the interval [0, b].y = 
+ 7
A. - 
- 7b
B. 
+ 7
C. - 
- 7
D. 
+ 7b
Mathematics
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.4(a + b)
A. 4ab B. 8ab C. 4a + 4b D. 4a + b
Mathematics
Rationalize the denominator.
A. 
B. 
C. 
D. 
Mathematics
The first card is a spade or a heart.
Two cards are dealt without replacement from a well-shuffled deck of cards. Find the probability of each event.
Mathematics