I'm taking the liberty of editing your function as follows: <span>w=4r^2+6s^2, where I use " ^ " to indicate exponentiation.
The partial of w with respect to r is 8r. That with respect to s is 12s.</span>
The answer is A because it’s A and it’s sooo easy I pass that grade
Answer:
the answer is 92/165...........
Let x be the number of 20 ton cars
Then,
380<{15(22-x)+20x}<400
380<{330-15x+20x}<400
380<{330+5x}<400
Subtract 330 on both sides
50<5x<70
Divide both sides by 5;
10<x<14
Therefore, the range of 20 tonne cars is between 10 and 14 cars.
Answer:
15 litres
Step-by-step explanation:
1/3 x= 5
x= 5 : 1/3
x= 5*3
x= 15 litres
