A baby weighed 3.2 kg at Birth she gained 0.17 kg per week how old was she when she weighed 5.75 kg

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Answer! if you don’t mind, can you explain

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?