Anumber from 40 to 50 is drawn at random ? what’s the probability (40, 42 , 46 , or 48) in fraction and decimal form ? simply fraction

What is the rotational symmetry of a wheel

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.