On a test that has a normal distribution, a score of 18 falls two standard deviations below the mean, and a score of 38 falls three standard deviations above the mean. Determine the mean of this test. ​

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.

The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2