The side lengths 10, 14, and 15 form a triangle. Explain why.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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?

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )