Answer:
$337.5
Step-by-step explanation:
4:5=360:x 360/4=90 90+360=450 check 360/450=0.8 and 4/5=0.8
4:5=360:450
larger farm perimeter is 450 yards so dig a trench 0.75 per yard
so 450 * 0.75 = $337.5
Hope this helps! :)
Answer:
is there a picture and if not its fine
Answer:
c < 4
Step-by-step explanation:
whenever you divide or multiply an inequality by a negative it is a rule that you must reverse the inequality symbol
so -c > -4 means you must divide or multiply by a negative one to get 'c' by itself; therefore it becomes c < 4
9514 1404 393
Answer:
8000π mm^3/s ≈ 25,133 mm^3/s
Step-by-step explanation:
The rate of change of volume is found by differentiating the volume formula with respect to time.
V = 4/3πr^3
V' = 4πr^2·r'
For the given numbers, this is ...
V' = 4π(20 mm)^2·(5 mm/s) = 8000π mm^3/s ≈ 25,133 mm^3/s
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<em>Additional comment</em>
By comparing the derivative to the area formula for a sphere, you see that the rate of change of volume is the product of the area and the rate of change of radius. This sort of relationship will be seen for a number of different shapes.
