Here is how to solve it:
<span>Distance1 ÷ (plane velocity + wind velocity) = Distance2 ÷ (plane velocity - wind velocity)</span>800 / (180 + wv) = 640 / (180 - wv)
115,200 +640 wv = 144,000 - 800 wv
1,440 wv = 28,800
wind velocity = 20 mph
Source:
http://www.1728.org/veloccal.htm
Six hundred two thousand one hundred and seven.
Answer:
90 centimetres per day
Step-by-step explanation:
Given that:
One of the Bamboo species growth can be seen.
Growth in
of a day = 30 cm
To find:
The growth per day in centimetres as a proper fraction, mixed number or whole number.
Solution:
If we are given that:
The growth of a bamboo tree is
centimetres in
number of days.
Then growth per day can be found by dividing the total growth of bamboo tree by the number of days.
Formula can be written as:
Growth per day = 
We are given that:

Putting the values, we get:

The angles x and 55.1 degrees are COMPLEMENTARY ANGLES. Please look up that term if necessary.
Subtract the angle 55.1 degrees from ( what? ) to obtain angle x.
Answer:
B. -3/4.
Step-by-step explanation:
|15 - 12| | - 21 + 9 |
----------- - | -----------|
4 | 8 |
= 3/ 4 - | - 12 / 8 |
= 3/4 - 12/8
= 3/4 - 3/2
= -3/4.