Solve the system. x + y + z = 2 x - y + 4z = -53x + y + z = -6
A. {(-4, 5, 1)}
B. {(1, 5, -4)}
C. ?
D. {(1, -4, 5)}
Answer: A
Mathematics
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Write the series and find the sum.
A. 14 + 17 + 20 = 51 B. 4 + 7 + 10 + 13 = 34 C. 8 + 11 + 14 + 17 + 20 + 23 = 93 D. 14 + 17 + 20 + 23 = 74
Mathematics
Find the probability.When a single card is drawn from an ordinary 52-card deck, find the probability of getting a black 10 or a red 7.
A. 
B. 
C. 
D. 
Mathematics
Simplify.|11|
A. 0 B. 11 C. 22 D. -11
Mathematics
The bar graph below shows the recorded high temperatures in Little City for the indicated months. 
In which month was the recorded temperature the lowest?
A. March B. February C. October D. January
Mathematics