1. Given rhombus RSTV, where the perimeter is 20cm and the area is 25cm². If rhombus RSTV is dilated by a scale factor of 3 about a given center, EXPLAIN YOUR REASONING AND SHOW YOUR WORK

a) What is the perimeter, in centimeters, of the image of RSTV after the dilation?

b) What is the area, in centimeter squares, of the image RSTV after the dilation?

2. Given rectangle ABCD where the perimeter is 12cm and the area is 36cm2. If rectangle RSTV is dilated by a scale factor of 4 about a given center. EXPLAIN YOUR REASONING AND SHOW YOUR WORK

a) What is the perimeter, in centimeters, of the image of RSTV after the dilation?

b) What is the area, in centimeter squares, of the image RSTV after the dilation.

Given f(x) = 10x + 4 and g(x) = 3x - 8, what is f(x) + g(x) ? - 7x - 4 - 13x + 4 - 7x + 4 - 13x - 4

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above