Solve the problem.The formula Z = R sec ? gives the impedance Z (in ohms) in an ac circuit with resistance R (in ohms) and phase angle ? (in radians). Find the average value of Z for an 74.1-? resistor as ? ranges from ?/8 radians to ?/3 radians.
A. 135.3 ?
B. 67.7 ?
C. 129.1 ?
D. 103.4 ?
Answer: D
Mathematics
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Write the number in word form.A planet orbits its sun at a distance of about 92,952,000 miles.
A. Ninety-two billion, nine hundred fifty-two million miles B. Ninety-two million, nine hundred fifty-two thousand miles C. Ninety-two million, nine hundred fifty-two miles D. Ninety-two billion, nine hundred fifty-two thousand miles
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Use the commutative property of multiplication to write an equivalent algebraic expression: 13x + 11.
a. x13 +11 b. 11 + 13x c. 11x + 13 d. 13 + 11x
Mathematics
In the figure, A-B-C. Explain why 
and 
must be supplementary.
What will be an ideal response?
Mathematics
Graph the equation.y = - 
x - 5
A. 
B. 
C. 
D. 
Mathematics