ABCD is a trapezoid with AD=5 ft, DC= 7 ft, and AB= 15 ft.
Find the area of the trapezoid.
33 ft2
4472
30 ft2
55 ft 2

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square