200 elementary school students were surveyed to find their blood groups. of those, 55 were of blood group a, 85 of blood group b, and 21 of blood group o. what is the probability that a randomly chosen student has either blood group a or blood group b? a) 0.25 b) 0.60 c) 0.70 d) 0.81

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Igure 1 and figure 2 are two congruent parallelograms drawn on a coordinate grid as shown below: 4 quadrant coordinate grid showing two parallelograms. figure 1 has vertices at negative 5, 2 and negative 3, 4 and negative 4, 7 and negative 6, 5. figure 2 has vertices at 5, negative 2 and 7, negative 4 and 6, negative 7 and 4, negative 5. which two transformations can map figure 1 onto figure 2? reflection across the y-axis, followed by reflection across x-axis reflection across the x-axis, followed by reflection across y-axis reflection across the x-axis, followed by translation 10 units right reflection across the y-axis, followed by translation 5 units down