Amixture of 50 liters of paint is 25% red tint, 30% yellow tint and 45% water. 7 liters of yellow tint is added to the original mixture. what percent of yellow tint is in the new mixture? answer must be correct to 1 decimal place.

38.5%

Step-by-step explanation:

To solve this we must first know how many liters of each color paint is in the mixture

0.25*50 = 12.5L of red paint

0.30*50 = 15L of yellow paint

0.45*50 = 22.5L of water

But then we add 7 liters of yellow paint. So the new numbers are:

12.5L red paint

22L of yellow paint

22.5L of water

Now we just the new amount of paint by the amount of mixture

Red=12.5/57

Yellow=22/57= 38.596491228

Water=22.5/57

Since we only care about 1 decimal place though, the answer would be 38.5%

step-by-step explanation:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204