Which situation involves a change modeled by a positive number but an end result modeled by a negative number? Leo enters an elevator on the second floor and goes down four floors.
A plane, flying at an altitude of 300 feet, descends 50 feet.
Irene is scuba diving at –30 feet. She swims 10 feet toward the surface to watch a school of fish.
April owes her brother $5. On Friday, she gets $10 for her allowance.

70,000 + 6,000 + 800 + 30

step-by-step explanation:

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.