31. If AABC - ARST, AB = 30, RS = 9, and RT = 15, find AC. A. 18
B. 25
C. 37.5
D. 50

need help

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

Need match the functions with correct transformation. f(x) = -3x f(x) = |x-1|+3 f(x) = √(x+3) 1/2x² f(x) = (x+1)²-3 4|x| 1. compress by a factor of 1/2 2. stretch by a factor of 4 3. shift to the left 3 4. shift to the left 1 5. shift up 3 6. reflection

How many 2/5s are in 1 and 1/2 plz someone me right now