Can someone please simplify these equations? I’ll give brainiest

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?