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2 years ago

The picture shows a barn door what is the distance BC between two horizontal parallel bars?

Mathematics

1 answer:

kolbaska11 [484]2 years ago

6 0

We know the lenght of the side adjacent to angle A, AC, and we want to know the opposite side, BC. What trig ratio describes the relationship between opposite and adjacent? The Tangent!

tan (x) = opp / adj
In this case, tan (45°) = BC / 4
To get BC by itself, multiply both sides by 4
4 * tan (45°) = BC

The answer is D

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2 years ago

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2 years ago

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2 years ago

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Micheal took his brother to the movies. Micheal paid regular price, but it cost $2 less for his brother at the child price. It c

iren [92.7K]

It cost $5 for his brother's ticket.

Step-by-step explanation:

Let,

Micheal's ticket price= x

His brother ticket price = y

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y = x-2 Eqn 2

Putting value of y from Eqn 2 in Eqn 1

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Dividing both sides by 2;

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Putting x=7 in Eqn 2

$y=7-2\\y=5$

It cost $5 for his brother's ticket.

Keywords: linear equation, substitution method

Learn more about linear equations at:

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3 years ago