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Zanzabum
3 years ago
8

Un globo aerostatico se encuentra a 300 pies a nivel del mar se encuentran estacionados 2 barcos. El tripulante del globo mide e

l angulo de depresion al primer barco con respecto a una linea que traza hacia el horizonte mismo que le da 40 grados ; despues con respecto a esa linea traza el angulo de depresion para el segundo barco y obtiene 25 grados ¿que distancia hay entre un barco y otro?
Mathematics
1 answer:
Firlakuza [10]3 years ago
6 0

Answer:

1001 feet

Step-by-step explanation:

A triangle is formed where the points are the balloon, boat 1 and boat 2. We know the height of the triangle and the respective angles of each boat, if we cross a line just at the height of the balloon, two rectangular triangles are formed and we can calculate the distance from the ship to that point of height, the sum of these two distances, would be the distance between the two balloons.

To calculate this distance, we apply tangent of the angle:

tan ° A = opposite / adjacent

opposite is the height and adjacent the distance we want to find:

d1 = opposite / tan ° A

d1 = 300 / tan 40

d1 = 300 / 0.8390

d1 = 357.56

now for the other distance:

d2 = opposite / tan ° B

d2 = 300 / tan 25

d2 = 300 / 0.4663

d2 = 643.36

In other words, the distance between the boats is:

357.56 + 643.36 = 1000.92

Approximately 1001 feet

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3 years ago
Identify the two pairs of complementary angles in the figure above. Justify your answer.
wolverine [178]

Answer:

1st pair of complementary angles: ∠c + ∠d

2nd pair of complementary angles: ∠g + ∠h

Step-by-step explanation:

the two solid lines are perpendicular, creating 4 right angles

1st pair of complementary angles: ∠c + ∠d

2nd pair of complementary angles: ∠g + ∠h

7 0
3 years ago
A) What is the equation of the line that passes through the given pair points in slope-intercept form?
lesya [120]

A)

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (2, 5.1) and (-1, -0.5). Substitute:

m=\dfrac{-0.5-5.1}{-1-2}=\dfrac{-5.6}{-3}=\dfrac{5.6}{3}=\dfrac{56}{30}=\dfrac{28}{15}

Therefore we have:

y=\dfrac{28}{15}x+b

Put the coordinates of the point (-1, -0.5) ot the equation:

-0.5=\dfrac{28}{15}(-1)+b

-0.5=-\dfrac{28}{15}+b     <em>multiply both sides by 2</em>

-1=-\dfrac{56}{15}+2b       <em>add \dfrac{56}{15} to both sides</em>

\dfrac{41}{15}=2b            <em>divide both sides by 2</em>

b=\dfrac{41}{30}

Answer: \boxed{y=\dfrac{28}{15}x+\dfrac{41}{30}}

-------------------------------------------------------------------------

B)

We have the points (-2, 3) and (3, -4).

Calculate the slope:

m=\dfrac{-4-3}{3-(-2)}=\dfrac{-7}{5}=-\dfrac{7}{5}

Therefore we have:

y=-\dfrac{7}{5}x+b

Put the coordinates of the point (-2, 3) to the equation of a line:

3=-\dfrac{7}{5}(-2)+b

\dfrac{15}{5}=\dfrac{14}{5}+b              <em>subtract \dfrac{14}{5} from both sides</em>

\dfrac{1}{5}=b\to b=\dfrac{1}{5}

Answer: \boxed{y=-\dfrac{7}{5}x+\dfrac{1}{5}}

7 0
3 years ago
Estimate the sum of 1,256, 379 and 305,986 by first rounding each number to the nearest ten thousand.
KatRina [158]

9514 1404 393

Answer:

  1,570,000

Step-by-step explanation:

The sum is approximately ...

  1,260,000 +310,000 = 1,570,000

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<em>Additional comment</em>

It is a good idea to estimate the error associated with an estimate. Here, both numbers are rounded up by about 4000 each, so the estimate is around 8000 high.

3 0
3 years ago
How do i cross multiply 1/25 = x/125
irakobra [83]

Multiply 1 by 125, and 25 by x so you can solve for x.

4 0
3 years ago
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