Calculate the sum of the squares of the first one hundred terms of an arithmetic progression, knowing that the sum of the progression terms equal -1, and that the sum of the even positioned terms of the progression equal 1.

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Answer asap. you begin with 1/2 scoop of ice cream. since you're hungry, you ask the vendor for 2/7 more scoops of ice cream. then, you eat 5/8 scoops. how many scoops of ice cream are left on your cone? i will mark brainliest for first correct answer.