Sierra walks her dog pepper twice a day. her evening walk is two and a half times as far as her morning walk. at the end of the week she tells her mom, “i walked pepper for 30 miles this week! how long is her morning walk?

1.71

Step-by-step explanation:If she walks every day divide 30 by seven to see how much she walks a day. 30/7≈4.28 divide by 2.5 to find out how much she walks in the morning 4.25/2.5=1.71. So she walks 1.71 hours in the morning

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

m∠a is 90°

m∠b is 40°