Simplify.2
? 
- 2
? 
A. 2
B. 20
C. 8
D. 26
Answer: A
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Use the improved Euler's method to calculate the first three approximations to the given initial value problem. Compare the approximations with the values of the exact solution.y' = 2xy, y(1) = 1, h = 0.1 and h = 0.05
A. 
B. 
C. 
D. 
Use the discriminant to determine the number and type of solutions for the equation.x2 + 6x - 7 = 0
A. Two complex-number solutions B. One real-number solution C. Two real-number solutions
Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 2.5 inches of rain occurred in 1959; the maximum of 9.7 inches of rain occurred in 1938.The third quartile of the rainfall distribution is approximately
A. 5.3 inches. B. 6.5 inches. C. 5 inches. D. 6.9 inches. E. none of these
Solve the problem.Use Ohm's Law, I = 
, to find the voltage V, given current 
and impedance 
A. 17(cos 110° + i sin 20°) B. 17(cos 130° + i sin 130°) C. 42(cos 130° + i sin 130°) D. 42(cos 20° + i sin 11°)