Write the expression in the standard form a + bi.2i15 - i7

A. i
B. -1
C. 1
D. -i


Answer: D

Mathematics

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Use a calculator to find the function value to four decimal places.sin 30°15'

A. 0.5832 B. 0.8638 C. 0.5038 D. 0.9880

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Find the y-intercepts and any x-intercepts.y = x2 + 10x

A. y-intercept (0, 0), x-intercept (-10, 0) B. y-intercept (0, 0), x-intercepts (0, 0) and (-10, 0) C. y-intercept (0, 0), x-intercepts (0, 0) and (0, -10) D. y-intercept (0, 0), x-intercepts (0, 0) and (10, 0)

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Solve the inequality. Write the solution in interval notation and graph the solution set. ? 4 + 

A. (-?, 15]

B. [-15, ?)

C. (15, ?)

D. [15, ?)

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Without graphing the function, state the shift(s) that are applied to the graph of  to graph the given function. If the graph of  must be rotated about the x-axis, state this.f(x) = (x + 6)2 + 10

A. left 6 units, down 10 units B. right 6 units, up 10 units C. right 6 units, down 10 units D. left 6 units, up 10 units

Mathematics