Sammie pays $30 for a bag that she buys at a discount of 50%. What is the price of the bag without the discount? A.
$30
B.
$45
C.
$60
D.
$80

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?