Use a formula to solve the problem.Find the area of a triangle with height 19 m and base 15 m.
A. 285 m2
B. 570 m2
C. 17 m2
D. 142.5 m2
Answer: D
Mathematics
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Find the series' radius of convergence.
A. 2 B. ?, for all x C. 4 D. 1
Mathematics
Write the equation of the line passing through the given points. Write your answer in slope-intercept form.Passing through (7, -1) and (-7, -1)
A. y = -1 B. y = 6x - 49 C. y = 3x - 28 D. y = 2x - 21
Mathematics
Write the expression in the form a + bi, where a and b are real numbers.
? 
A. 2
B. -2i
C. 2i
D. -2
Mathematics
Translate the sentence to an equation and then solve.If 4 times a number is added to -9, the result is equal to 13 times the number.
A. 4x + (-9) = 13x; -1 B. 13(4x - 9) = -9; -1 C. 4x + 9x = 13; 1 D. 4x - (-9) = 13x; 1
Mathematics