Mathematics: This is worth 40 ! i will mark ! i need this done ! must to all 3 of

This is worth 40 ! i will mark ! i need this done

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nickname0097

05.07.2019

All this requires is some distribution and combining of termsso.. $1.)$ $4.5(8 - x) + 36 = 102 - 2.5(3x + 24)$ $36 - 4.5x = 102 - 7.5x + 60$ $3x = 126$ $x = 42$ $2.)$ $12x > 9(2x - 3) - 15$ $12x > 18x - 27 - 15$ $42 > 6x$ $7 > x$ $x < 7$

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Ответ:

tot92

17.01.2021

Mathematics

x = 54°

Step-by-step explanation:

(5-2)·180° = 540°, which is the total amount of degrees inside a pentagon

if it's regular then each angle is equal so m∡B = 540/5 or 108°

∠DBC ≅ ∠CDB because ΔCBD is isosceles

half of 108 is 54°

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This is worth 40 ! i will mark ! i need this done ! must to all 3 of

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