The work of a student to solve a set of equations is shown:
equation a: y = 15 – 2z
eq...
Mathematics, 22.09.2019 14:10 kellymcdow5135
The work of a student to solve a set of equations is shown:
equation a: y = 15 – 2z
equation b: 3y = 3 – 4z
step 1: –3(y) = –3(15 – 2z) [equation a is multiplied by –3.]
3y = 3 – 4z [equation b]
step 2: –3y = 15 – 2z [equation a in step 1 is simplified.]
3y = 3 – 4z [equation b]
step 3: 0 = 18 – 6z [equations in step 2 are added.]
step 4: 6z = 18
step 5: z = 3
in which step did the student first make an error
Answers: 1
Mathematics, 21.06.2019 16:30, trillralyn4060
Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices
Answers: 2
Mathematics, 21.06.2019 17:00, emmaline11
Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?
Answers: 1
Mathematics, 21.06.2019 19:30, amatulli
Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .
Answers: 1
History, 05.05.2020 04:21
Mathematics, 05.05.2020 04:21
English, 05.05.2020 04:21
Mathematics, 05.05.2020 04:21