Perform the indicated operation. Write the answer in scientific notation.(4.3 × 104)(2.2 × 105)
A. 9.46 × 109
B. 956 × 1018
C. 9.56 × 109
D. 946 × 107
Answer: A
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Use Euler's method with the specified step size to approximate the solution.Use Euler's method with h = 0.2 to estimate y(2) if y' = -y and y(1) = -2. Round your answer to four decimal places.
A. y(2) ? -0.0554 B. y(2) ? -0.4554 C. y(2) ? -0.2554 D. y(2) ? -0.6554
Use the commutative property of addition to write an equivalent algebraic expression.7x + 2y
A. 7x - 2y B. 7x + 2y C. 7y + 2x D. 2y + 7x
Simplify the expression. Assume that all variables are positive when they appear.12
? 4
A. 16
B. 48
? 
C. 48
D. 48
Identify the conic section that the polar equation represents. Describe the location of a directrix from the focus located at the pole.r =
A. ellipse; The directrix is unit(s) to the left of the pole at x = -
.
B. ellipse; The directrix is unit(s) to the right of the pole at x =
.
C. ellipse; The directrix is unit(s) below the pole at y = -
.
D. ellipse; The directrix is unit(s) above the pole at y =
.