The triangles are similar. What is the value of x?

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x =

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

I’m really confused and need to learn this