HELP PLEASE 13. Triangle ABC is dilated by a scale factor of 3. The
vertices of ABC are A(1,5), B(2,3) and C(4,2). What are
the vertices of Triangle A'B'C'.
A. A'(3,15), B'(6,9), C'(12,6)
B. A'(1,15), B'(2,9), C'(4,6)
C. A'(3,5), B’(6,3), C'(12,2)
D. A'(1/3, 5/3), B'(2/3,1), C'(4/3, 2/3)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.