what is he answer to 2x + 4 = 20

Question: A wire of length 32 cm is to be bent in the form of an isosceles triangle of base 12 cm. What is the area of the triangle so formed? Answer: Let each of the equal sides be 'x' cm 2x + 12 = 32 x = 10 cm =..

Answer the question: List the first four multiples of 10 and of 20 => 10, 20, 30, 60 and 20, 50, 60, 80 or 10, 20, 30, 40 and 20, 40, 60, 90 or 10, 20, 30, 50 and 20, 40, 60, 70 or 10, 20, 30, 40 and..

Question: A fuse in an electric circuit acts as a 1. current multiplication 2. voltage multiplication 3. power multiplier 4. safety device Answer: 4..

Question: The average speed of a car which covers half the distance with a speed of 20 m/s and other half with a speed of 30 m/s in equal intervals of time is _________. 1. 25 m/s 2. 0 m/s 3. 24 m/s 4. 2.4 m/s Answer: ..

Question: In a solar panel, the metal used is ______. 1. gold 2. copper 3. silver 4. nickel Answer: ..

Question: The point where crossing over of chromatids takes place is ___. 1. chiasma 2. kinetochore 3. centromere 4. chromomere Answer: ..

Question: Induced breeding can be exploited to increase the production of 1. camels 2. horses 3. fish 4. cows Answer: ..

Question: For any substance the temperature remains same during the change of state due to ___________. 1. loss of heat 2. latent heat 3. less supply of heat 4. lattice energy Answer: 2..

Question: The end of a long bone is connected to another bone by ____________. 1. ligament 2. tendon 3. cartilage 4. muscle Answer: ..

Question: An object of mass 1 kg has potential energy of 1 joule relative to the ground when it is at a height of _______. 1. 0.102 m 2. 1 m 3. 9.8 m 4. 32 m Answer: ..