Perform the indicated operations.( 3x2 - 3xy - 1) + ( -8x2 - 6x + 8)
A. 11x2 - 3xy - 6x + 9
B. -5x2 - 9xy - 9
C. -5x2 - 3xy - 6x + 7
D. -5x2 - 9xy + 7
Answer: C
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Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 183 km/hr. A second airplane approaches from the east at 297 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 35 km away from the airport and the westbound plane is 23 km from the airport.
A. -632 km/hr B. -474 km/hr C. -316 km/hr D. -158 km/hr
Use a calculator to approximate the natural logarithm to four decimal places.ln 0.986
A. 0.0061 B. -0.0141 C. -0.0061 D. 0.0141
Use the equality test for fractions to determine if the fractions are equal.
A. Yes B. No
In the following group of computations, one answer is wrong. Use estimation to explain which answer is incorrect.
?
?
?
?
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/>2.538 5.19 296.3894 What will be an ideal response?