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Lilit [14]
3 years ago
10

(-3√ -81)(-5+√ -9)+9i

Mathematics
1 answer:
AnnyKZ [126]3 years ago
5 0

Answer:

144i + 81

Step-by-step explanation:

(-3*9i)(-5 + 3i) + 9i

-27i (-5 + 3i) + 9i

FOIL

135i + 81 + 9i

144i + 81

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Answer:

Height of building from base to ladder = 5.8 meter (Approx.)

Step-by-step explanation:

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Computation:

Perpendicular = √Hypotenuse² - Base²

Height of building from base to ladder = √Length of ladder² - Distance of ladder from base²

Height of building from base to ladder = √6² - 1.5²

Height of building from base to ladder = √36 - 2.25

Height of building from base to ladder = √33.75

Height of building from base to ladder = 5.8 meter (Approx.)

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