What is the solution of the system of equations? (1 point) (5, –2, 7) (–5, 2, 7) (5, 2, –7) no solution what is element a_23 in matrix a? (1 point) –5 3 –4 8

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8

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?