5x^3-25x^2+20x
=5x(x^2-5x+4)
Answer:
A
Step-by-step explanation:
The element that is most often found in the satirical writings is letter c, the language that exaggerates social norms. It is because satirical writings are likely to be focused on bringing about the topic in regards to change in both social and political and with that, they are likely to exaggerate social norms.
Answer:
9 Litre of 100% acid, 27 Litre of 20% acid solution
Step-by-step explanation:
We know that 1 = 100% while
0.2 = 20%
We assume that x is volume of 100% solution, while y is volume of 20% solution.
x + 0.2y = (36×40/100)
x+0.2y= 14.4--------eqn(1)
x+y=36-------eqn(2)
x=36-y------eqn(3)
Input eqn(2) into 1 we have
(36-y)+0.2y= 14.4
-y+0.2y=14.4-36
-0.8y= 21.6
y=21.6/0.8
y=27
Hence, 27 Litre of 20% acid is required
From eqn(3) we can find value of x
x = 36-27
9 Litre of 100% acid is required
9 Litre of 100% acid, 27 Litre of 20% acid
Hence, the laboratory technician can combine a batch of 9 Litre of 100% acid, 27 Litre of 20% acid an acid solution that is pure acid with another that is 20% to get the desired concentration
Answer:
A.
Step-by-step explanation:
If you substitute each answer that is below 18, you will get an answer that is below 30 every time.