During bicycling practice, gwen rides a lap then takes a break. her goal is to have 45-
second laps. she completed the first lap in 41 seconds, and her coach marked the lap
(-4). the coach marked her next lap (+1). what was gwen's time on the second lap?

46

Step-by-step explanation:

Lap 1 had an interval of -4 seconds which is solved by (41-45)

Lap 2 had an interval of 46 seconds which is solved by (46-45)

The formula here is Measured Value subtracted by Expected Value

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.