Answer: B) -1 Explanation: Given 5x - 6 = 3x - 8 5x - 3x = -8 + 6 2x = -2 => x = -1.

Answer: D) the system of racial segregation in the South after Reconstruction Explanation:

Answer: A) 21 yrs Explanation: Sum of ages of husband, wife and child= (24 × 3) + 9 = 81 years Sum of ages of wife and child => 25 × 2 + 10 = 50 + 10 = 60 years Age of husband = 81 - 60 = 21 years.

Answer: A) 4:3 Explanation: Let the numbers be p & q q-p/4 = 4q/6 => q-4q/6 = p/4 => 2q/6 = p/4  => p/q = 4/3

Answer: A) 65 Explanation: Here the given numbers are related in such a manner that, 52 = 255+12 + 1 = 37Similarly, 72 = 497+12 + 1 = 64 + 1 = 65   Hence, 25 : 37 :: 49 : 65.

Answer: B) Decreasing pressure Explanation: A barometer is a tool that measures air pressure A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure. In space, there is a nearly complete vacuum, so the air pressure is zero.

Answer: D) Rs. 90000 Explanation: Ratio of investments for 1 year => (P : Q : R) = (2x2 + 2.4x10) : (3x2 + 3.3x10) : (5x12) => (P : Q : R) = 28 : 39 : 60 Now R share = 190500 x 60/127 = Rs. 90000.

The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body.   In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.   The nervous system has three main functions: * To collect sensory input from the body and external environment. * To process and interpret the sensory input. * To respond appropriately to the sensory input.