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Find the missing dimension. Use the scale factor 1 : 12.
Item Model Actual
Football helmet Diameter: mm Diameter: 21 cm

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?