Fill in the blank with one of the words or phrases listed below.
A symbol used to represent a number is called a 
.
A. variable
B. base
C. set
D. solution
Answer: A
Mathematics
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Answer the question.True or False.The absolute value of any number is positive.
Answer the following statement true (T) or false (F)
Mathematics
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 the value of VR .
2
a. 0.488 V
b. 0.732 V
c. 0.363 V
d. 5.04 V
e. 11.44 V
Mathematics
Solve the problem.Find the acute angle ? (in degrees) that satisfies the equation cos ? = 
.
A. 330° B. 315° C. 45° D. 30°
Mathematics
Multiply.-1000 × (-706.941700)
A. -7069.417 B. 706,941.7 C. -7,069,417 D. 70,694.17
Mathematics