The windows on a building are proportional to the size of the building. the height of each window is 18in., and the width is 11in. if the height of the building is 108 ft, what is the width of the building?

Select the number of ways in which a line and a circle can intersect

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?