The use of computers in education is referred to as computer-assisted instruction (cai). write a program that will an elementary school student learn addition, subtraction, and multiplication. your program begins by generating a random number representing a problem type (e. g., 1 for addition, 2 for subtraction, it then generates two random numbers in the range 1 to 100, inclusive, that will be used to create a problem of the chosen type. finally, it displays the problem and prompts the student for an answer. for example: how much is 31 + 23? the student next inputs the answer and the program checks it. if the answer is correct, the program displays the message "great job! " if the answer is not correct, the program displays the message "i’m sorry, but no. keep practicing! "

5.a fishing rod is formed from a composite material of 0.5 kg of glass fibers embedded in a matrix of 0.5 kg of epoxy resin. the glass fibers are assumed to be long, continuous and unidirectional. to achieve a greater stiffness it is proposed to use a different composite that is comprised of long continuous carbon fibers that will be embedded in a matrix of 0.5 kg of epoxy resin. if the modulus of elasticity of the carbon fiber composite is 10% greater than the elastic modulus of the glass fiber composite, estimate the mass of carbon fibers that will be used to make the carbon fiber composite. assume the applied tensile stress is parallel to the direction of the long axis of the fibers. the epoxy resin, glass fiber, and carbon fiber have an elastic modulus of 5, 86, and 350 gpa respectively and a density of 1100, 2500, and 1800 respectively.