Write the phrase as an expression and simplify.Decrease 18 by -21.
A. 3
B. 39
C. -39
D. -3
Answer: B
Mathematics
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Perform the division.
A. m2n2 + n3 B. m2n2 + mn2 C. m4n4 + m2n4 D. m2n2 + n2
Mathematics
Solve the logarithmic equation.log 3x = log 4 + log (x - 1)
A. - 
B. 
C. -4
D. 4
Mathematics
Solve.-3 logt 64 = -9
A. -12 B. 12 C. 3 D. 4
Mathematics
Solve the problem.The perimeter of a rectangle is 64 m. If the width were doubled and the length were increased by 21 m, the perimeter would be 128 m. What are the length and width of the rectangle?
A. width 16 m, length 16 m B. width 21 m, length 11 m C. width 11 m, length 21 m D. width 11 m, length 16 m
Mathematics