A roller Coaster begins at 90 ft above ground level. Then it descends 105 ft. find the height of the coaster after the first descendent

15

90-105 = ?

To find the height of the roller coaster after the first descent, you need to subtract the distance it descended from its initial height.

The roller coaster begins at 90 ft above ground level and descends 105 ft, so you need to subtract 105 ft from 90 ft.

Height after the first descent = Initial height - Distance descended
= 90 ft - 105 ft

Since the result is negative, it means that the roller coaster went below ground level (i.e., below 0 ft). To find the exact height below ground level, you can take the absolute value of the result.

Absolute height after the first descent = |Initial height - Distance descended|
= |90 ft - 105 ft|
= |-15 ft|
= 15 ft

Therefore, the height of the roller coaster after the first descent is 15 ft below ground level.