State whether the given pair of expressions are like terms. If they are like terms, add them.-5ab2, 19a2b
A. No
B. Yes; 14a3b3
C. Yes; 14ab2
D. Yes; -24a2b
Answer: A
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Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?A high school principal wanted to know how the teachers at her school felt about early dismissal for Homecoming. She put the names of the 114 faculty in a hat and randomly selected 30 of the names. She gave questionnaires to those 30 people asking whether they agreed or disagreed with the following statement: "Valuable learning time should not be sacrificed for extracurricular social activities." The questionnaires were filled out anonymously. Her conclusion was that 80% of the faculty were opposed to early dismissal for Homecoming.
A. The setting may discourage honest responses B. Participation bias C. Selection bias D. Confounding variables E. The wording of the question
Multiply using the lattice method.77 × 98
A. 7556 B. 7646 C. 7536 D. 7546
Solve by using the Superposition Theorem:
R1 = 4.7 Kê, R2 = 3.3 Kê, R3 = 5.1 Kê, E1 = 40 V, and E2 = 20 V. Find VR .
3
a. 19.28 V
b. 20.46 V
c. 21.21 V
d. 32.81 V
e. 37.05 V
Solve the problem.From a boat on the lake, the angle of elevation to the top of a cliff is 
If the base of the cliff is 1683 feet from the boat, how high is the cliff (to the nearest foot)?
A. 404 ft B. 407 ft C. 397 ft D. 394 ft