hamidaakter936848
28.11.2019 •
Mathematics
Guys me i have two questions this is the first question: a school cafeteria sold 1,280 slices of pizza the first week, 640 the second week, and 320 the third week. if this pattern continues in what week will the cafeteria sell 40 slices? explain your answer.
2.dawn spent 26.50, including sales tax on 4 books and 3 folders.the books cost $5.33 each and the total sales tax was $1.73. fi'll in the chart below
cost of each book
cost of each folder
cost of sales tax
Solved
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Ответ:
Ответ:
Each book is $5.33
Each folder is $1.15
Cost of sales tax is $1.73
Ответ:
5x²+5y²-20x+30y+40=0
==>x²+y²-4x+6y+8=0 (divided by 5)
==>(x²-2*2x+4)+(y²+2*3y+9)+8-4-9=0
==>(x-2)²+(y+3)²=5
Center (2,-3)
Radius= √5≈2.2360...