Find the missing monomial, factor or term.7x5 ? ? = 28x7
A. 4x2
B. -x2
C. x2
D. -4x2
Answer: A
Mathematics
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Add in the indicated base.
A. 1105 B. 1315 C. 1225 D. 2315
Mathematics
Solve.Fred has taken four exams so far in his Chemistry course. His scores are 86, 85, 76, and 92. What is the average of these scores?
A. 84.75 B. 87.75 C. 169.5 D. 80.75
Mathematics
Solve the equation. Round decimal answers to the nearest thousandth.3e5x+9 = 6
A. -1.661 B. -2.921 C. -3.199 D. -0.401
Mathematics
Use the right triangle shown below and find the missing length. Give an exact answer and a decimal approximation rounded to two decimal places. 
b = 60, c = 65
A. a = 25, -25 B. a = 25 C. a = 125 D. a = 625
Mathematics