Q=5*x^2+3*(8-x)^2
dq/dx=10x-6(8-x)=16x-48....1
To minimise q dq/dx=0......2
x=3 and y=5 on solving 1&2
X= 4/3
first y= 10/3
second y=8
Answer:
Coplanar is when all 3 points are on the same plane
Noncoplanar is when they are not
For ex:
Coplanar->
.x, .z, and .s are all on the plane R
Noncoplanar->
.x, and .z are on plane R
.s is on plane Y
If 12units is the length of the hypotenuse, then, the two legs would be 6 and 6√3. Hope this helps. ;)
<span>The correct answers are A) 7.4 km/hr and B) 81.2 in/s.
Explanation:
A) The original ratio is 1 mi/13 min. We know that 1 mi = 5280 feet, so we have 5280 ft/13 min.
Each foot is 12 inches, so we have 5280*12 = 63360 in
63360 in/13 min
Each minute is 60 seconds; 13*60 = 780
63360 in/780 sec.
Dividing this, we get 81.2 in/sec.
B) 1 mi/13 min; 1 mile = 1609 m, so we have 1609 m/13 min.
1 m = 1000 km, so 1609 m = 1609/1000 = 1.609 km; this gives us 1.609 km/13 min.
An hour is 60 minutes, so we have 1.609 km/(13/60) hr; dividing this, we get 7.4 km/hr.</span>
