Identify the equation as either an identity or not.sec4x - tan4x - 2 tan2x = 1
A. Not an identity
B. Identity
Answer: B
Mathematics
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Solve for the specified variable.P = 
for r
A. 
B. 
C. 
D. P - tA
Mathematics
Solve the problem.How many kilometers long is a 18,000 meter race?
A. 1,800,000 km B. 18 km C. 180 km D. 1.8 km
Mathematics
Translate into an equation, then solve.A weatherman reports that since 6:00 am this morning the temperature has dropped by 
to the current temperature of 
What was the temperature at 6:00 am ?
A. x + 19 = -4; x = -15°F B. x - 19 = -4; x = 15°F C. x - 19 = -4; x = -15°F D. x + 19 = -4; x = 15°F
Mathematics
Solve graphically.2x - y = 0
A. (2, 3) B. No solution C. (-2, 3) D. Infinitely many solutions
Mathematics