Simplify the power of i to i, 1, -i or -1.i-19
A. -1
B. -i
C. 1
D. i
Answer: D
Mathematics
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Solve and check.-7a + 3 + 8a = 9 - 27
A. a = -21 B. a = 39 C. a = 21 D. a = -39
Mathematics
Given the values of x and y, find an equation of variation in which y varies directly as x.y = 230, when x = 90
A. x = 140y B. x = 2.56y C. y = 2.56x D. y = 0.39x
Mathematics
Plot the ordered pairs on the rectangular coordinate system provided.A(5, 4), B(-1, -2)
A. 
B. 
C. 
D. 
Mathematics
Use the Pythagorean identity.Find sin ?, given that cos ? = 
and 
? ? < 2?
A. - 
B. - 
C. - 
D. - 
Mathematics