Write the sum using summation notation, assuming the suggested pattern continues. 8 - 40 + 200 - 1000 +

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?