On each weekly spelling test, the students in Mrs. Ruiz’s class record how they do in comparison to the week before. For example, if they spell two more words correctly this week than last week, then they put a +2 in the corner of their paper. If they spell two less words correctly this week than last week, then they put a -2 in the corner of their paper. After collecting the papers, Mrs. Ruiz notices that the first four papers had the following marks:

Student A: -1

Student B: 0

Student C: -3

Student D: 2

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula

answer: it actually depends on which is the independent variable and which is the dependent variable. let us say we're looking at a linear equation. y=2x+3. we theoretically could switch the equation to be x=(y-3)/2 and it would be the same line. so either a causes b or it can be that b causes a. so technically the answer is false

step-by-step explanation: