Solve the equation.
= x - 7
A. -11
B. 10
C. 31
D. -10
Answer: B
Mathematics
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Find the acute angle, in radians, between the lines.5x - 2y = -10 and 4x + 5y = 4
A. 0.2900 radians B. 2.847 radians C. 1.277 radians D. 0.2942 radians
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Add.3745 + 7667
A. 1022 B. 1123 C. 11,412 D. 1102
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Solve by using addition, subtraction, multiplication, or division as needed.Akira's car used 21 gallons of gasoline when he drove it 525 miles. How many miles per gallon did it get?
A. 25 miles per gallon B. 21 miles per gallon C. 53 miles per gallon D. 504 miles per gallon
Mathematics
Find the value of a so that vectors 
and 
are perpendicular.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics