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18. What will be the result if you evaluate 6xy + x -y + 12, given x = 3 and y = 5?

19. Thirty times the number of voters in the election is 90,000. How many persons voted?

20. Sixteen less than seven times the number of sandwiches is 264. How many sandwiches are there?

‼non-sense report‼​

Sagot :

Step-by-step explanation:

yan lang po nakayanan kong sagutan tug number 18 sabog na utak ko salamat

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Answer:

18. [tex] 6xy + x - y + 12; x = 3, y = 5 [/tex]

[tex] 6(3)(5) + 3 - 5 + 12 [/tex]

[tex] 18(5) + 3 - 5 + 12 [/tex]

[tex] 90 - 2 + 12 [/tex]

[tex] 88 + 12 [/tex]

[tex] 100 [/tex]

19. let n be the number of voters

[tex] Given: 30n = 90,000 [/tex]

[tex] \frac{30n}{30} = \frac{90,000}{30} [/tex]

[tex] n = 3,000 [/tex]

20. let s be the number of sandwiches

[tex] Given: 7s - 16 = 264 [/tex]

[tex] 7s = 264 + 16 [/tex]

》addition property of equality

[tex] 7s = 280 [/tex]

[tex] \frac{7s}{7} = \frac{280}{7} [/tex]

[tex] s = 40 [/tex]