orlandokojoasem1234
22.10.2021 •
Mathematics
Multiply the matrices. (Please help!)
[-1 2 0, 3 -2 4, -5 -1 6] x [2 -3, 7 -1, 1 2]
Show your work.
![Multiply the matrices. (Please help!)
[-1 2 0, 3 -2 4, -5 -1 6] x [2 -3, 7 -1, 1 2]
Show your wor](/tpl/images/2516/8187/99ebf.jpg)
Solved
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Ответ:
Monday: 70
Tuesday: 64
Wednesday: 50
Thursday: 55
Friday: 76
Step-by-step explanation:
Equations
Let's call x to the number of sandwiches ordered for Thursday's meeting. We know that for Wednesday’s, we'll need x-5 sandwiches, for Monday's, we'll need 20 more, i.e. (x-5+20)=x+15 sandwiches. For Tuesday's it will be 6 fewer than x+15, or x+9. Finally, for Friday's, it will be 12 more than x+9 or x+21. Summarizing:
Monday: x+15
Tuesday: x+9
Wednesday: x-5
Thursday: x
Friday: x+21
The fewest of them all is x-5 and is must be equal to 50
The number of sandwiches per day is
Monday: x+15=70
Tuesday: x+9=64
Wednesday: x-5=50
Thursday: x=55
Friday: x+21=76