Answer:
7
Step-by-step explanation:
<span>
<u><em>The correct answer is: </em></u>4.
<u><em>Explanation</em></u><span>
<u><em>: </em></u>To find this answer, we divide the number of windows, 50, by the length (in windows covered) of each covering, 15:
</span></span>

<span><span>.
This means that 3 coverings won't quite be long enough, so we will need 4. </span></span>
It is the one in the bottom left corner. This is because you start with the number on the right (7) and plot it on the y axis (the vertical line in the middle). Then you take the slope (3x) and view it as 3/1. Start at 7 and go up 3 and then over one. Continue this until you have a line.
The distance between two positions with longitudes A and B is given by ||A| - |B|| if the two positions are at the same side of the meridian (0 degrees longitude) and |A| + |B| if both positions are at different sides of the meridian.
Given that <span>Moscow is at 37.62 degrees longitude and Brasilia is at -47.87
degrees longitude, thus the two cities are at different sides of the meridian.
Therefore, the distance </span><span>(in degrees) between the longitude lines of Moscow and Brasilia</span> is |37.62| + |-47.87| = 37.62 + 47.87 = 85.49
Answer:
CB = 9
Step-by-step explanation:
To find CB, apply trigonometric function.
Reference angle = 60°
Hypotenuse = 18
Adjacent = CB
Apply CAH:
Cos 60 = Adj/Hyp
Cos 60 = CB/18
Cos 60 × 18 = CB
CB = Cos 60 × 18
CB = 9