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shtirl [24]
3 years ago
10

-20≤5/9(F−32) ≤ −15 solve the compound inequality

Mathematics
2 answers:
natulia [17]3 years ago
8 0

Answer:

-20≤5/9(F−32) ≤ −15

9 x -20 ≤ 9 x 5/9 (F−32) ≤ 9 x -15

-180≤5(F−32)≤ -135

-180≤5F-160≤ -135

-180 + 160 ≤ 5F - 160 + 160 ≤ -135 + 160

-20/5 ≤ 5F/5 ≤ 25/5

-4 ≤ F ≤ 5

Step-by-step explanation:

  1. multiply everything by 9
  2. distribute the bracket
  3. add 160 to both sides
  4. divide both sides by 5

since the coefficient of F is positive, the inequality signs would not change.

Ulleksa [173]3 years ago
7 0

Answer:

Hey, I see that this is your first question... Good luck! The answer is − 4 ≤ F ≤ 5

Step-by-step explanation:

Move all terms not containing  F  from the center section of the inequality.

❤️❤️❤️❤️❤️Hope This Helps❤️❤️❤️❤️❤️

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