Answer:7
Step-by-step explanation: the answer is 7
Taking the observation point as a vertex. The line to the observed window is the hypotenuse of a right triangle formed with the horizontal distance between the two buildings and the opposite leg to the angle of elevation.
The tangent of this angle is the ratio between the opposite leg and the adjacent leg. And the opposite leg is also the height from the height of the observation window to the observed window.
If h is the height from ground level to the second window, we will call h - 40 to the opposite leg and d to the adjacent leg that is also the horizontal distance between the buildings.
tangent(43º) = 0,93251509 = (h - 40)/d
h = tangent(43º)*d + 40 feet = 0,93251509*110 feet + 40 feet = 142.58 feet
Answer = C.) = 140 feet above the ground level is the second window.
Answer:
Step-by-step explanation:
17x - 5(12x - 2y) = 5(4y + 3 + 2x)
Distribute
17x - 60x + 10y = 20y + 15 + 10x
Combine like terms
-43x + 10y = 20y + 15 + 10x
Subtract 10x to both sides
-43x + 10y - 10x = 20y + 15
-53x + 10y = 20y + 15
Subtract 10y to both sides
-53x = 20y + 15 - 10y
-53x = 10y + 15
Divide both sides by -53
Hope this helped!
<h3>~AH1807</h3>
13.7b-3=3-4.3b
add the 3 to both sides 13.7b=6-4.3b
add 4.3b to both sides 18b=6
divide both sides by 18 so b=0.75