how do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons?

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?