2 years ago

Write the equation of the line that passes through the points (2, 1) and (-8, -8).

Mathematics

1 answer:

wariber [46]2 years ago

6 0

Answer:

Step-by-step explanation:

Find the distance between the given points: (-7, 5) and (-8, 4)

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The product of four consecutive odd numbers(all four positive or all four negative)is 62985.find the two possible sets of four n

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2 years ago

Given: △ABC; AB=BC, m∠BDA = 60°, BD=4 cm, BD ⊥ BA . Find: DC, AC.

vekshin1

Answer:

DC = 10.93 cm , AC = 9.8 cm

Step-by-step explanation:

From trigonometry;

⇒ Tan 60 = AB/BD

⇒AB = BD Tan 60 ( where BD = 4 cm )

⇒ AB = 6.93 cm

Also, AB=BC , therefore;

⇒ BC = 6.93 cm

⇒ Cos 60 = BD/AD

⇒ AD = BD/ Cos 60 = 4/Cos 60

⇒ AD = 8 cm

From Pythagoras theorem;

⇒ $AC^{2}$ = $AB^{2}$ + $BC^{2}$ = $(6.93)^{2}$ + $(6.93)^{2}$

⇒ AC = $\sqrt{96.05}$ = 9.80 cm

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⇒ DC = 10.93 cm

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