6th grade math i mark as brainliest

What is this inequality notation? t is less then or equal to 2

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.