Solve the system of equations by substitution. x + 2y = 23x - 7y = -7
A. (1, 1)
B. (0, 0)
C. (1, 0)
D. (0, 1)
Answer: D
Mathematics
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Graph the numbers on a number line.-5.75, -3, -1, 1.25
A. 
B. 
C. 
D. 
Mathematics
Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.42 + 83 + 124 + . . . + 329
A. 
B. 
C. 
D. 
Mathematics
Solve the equation by completing the square.x2 - 8x - 3 = 0
A. {8 - 
, 8 + 
}
B. {-4 - 
, -4 + 
}
C. {4 - 
, 4 + 
}
D. {4 - 
, 4 + 
}
Mathematics
Use the pictograph to answer the question.For selected countries, this pictograph shows approximately how many kilograms of seafood is consumed by each person (per capita) annually.
What is the approximate seafood consumption in Country E?
A. 6972 kilograms B. 6723 kilograms C. 5976 kilograms D. 6225 kilograms
Mathematics