7 Eliza's backpack weighs 18 pounds with her math book in it. Without her math book, her backpack
much does Eliza's math book weigh?
11
372 pounds
7
4
72 pounds
72 pounds
0 372 pounds
a

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

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.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!