Answer:
1,715 feets
Step-by-step explanation:
Give the following :
General descent rate of hot air balloon = 200 - 400ft/min
Six balloons descend at a rate of 245 ft/min for four minutes
The total change in altitude for all six balloons :
From speed = distance / time
Speed = 245 ft / min ; time = 7 minutes
Hence distance descended by the six balloons :
245 ft/min × 7 minutes = 1,715 fts
Hence total change in altitude = 1,715 feets
Answer:
18
Step-by-step explanation:
x + (x + 1) + (x + 2) = 57
x + x + 1 + x + 2 = 57
x + x + x + 1 + 2 = 57
3x + 3 = 57
3x = 57 - 3
3x = 54
x = 54/3
x = 18
By flipping the fraction of -3/7, you will get the fraction of -7/3 or - 2 1/3.
Therefore, the reciprocal of -3/7 is - 2 1/3.
Hope this helps!
Answer:
x = 20
Step-by-step explanation:
4x and 5x are same- side interior angles and sum to 180° , then
4x + 5x = 180
9x = 180 ( divide both sides by 9 )
x = 20
