Answer:
a) 
b) it is noticeable
Step-by-step explanation:
a) Let a(t) be the amount of die at time t. a is in kg and t is in minutes. Therefore:
b) 4 hrs = (4 * 60) min = 240 min
3.345 kg = (3.345 * 1000 / 60000) g/gal = 0.0557 g/gal
0.0557 g/gal > 0.03 g/gal, therefore it is noticeable
Please provide context so that we may help with your question
To get the area, the formula is 2l x 2w = a
so the formula will be like this:
(x)(x+x/4)=180
where,
x is the width
x+x/4 is the height
180 is the area
(x)(x+x/4)=180
[4(x)][4(x+x/4)]=180(4) multiply all sides by 4 to remove the fraction
(4x)(4x+x)=720
(4x)(5x)=720 simplify
20x^2=720 multiply 4x and 5x
20x^2=720 get the sq root of both sides
4.47x=26.83 divide by 4.47 to get the value of x
x=6
the width is 6 sq inches
the length is 7.5 sq inches
[(2)(6)][(2)(7.5)]=180
(12)(15)=180
180=180
