Answer: an average of 13.5 mph is very respectable
Step-by-step explanation:
Answer:
Step-by-step explanation:
Use the formula for a semicircle's perimeter.
Plug in 6 for d.
Let's use 3.14 for 
, just to make it easier, but of course, if it states to round it to something else, just plug in that many values for .
Answer:
Its C
Step-by-step explanation:
5x2(3x-1)+2(3x-1)factoring furhter gives(5x2+2)(3x-1)
Answer:
The degree of fastness by which the water is rising is 210 seconds
Step-by-step explanation:
The volume of the trough when the water depth is 20 cm is first calculated
Volume of the trough (Trapezoidal Prism) = LH (A + B) × 0.5
Where L is the length of the trough, H is the height of the trough and A and B are parallel width of the top and bottom of the trough
Volume of the trough = 7 × 0.2 (0.3 + 0.7) × 0.5 = 0.7m³
The fastness at which the water is rising is = Volume ÷ water flow rate = 0.7 ÷ 0.2 = 3.5 min = 210 seconds
