Pure acid is to be added to a 10% acid solution to obtain 72 l of a 20% acid solution.

what amounts of each should be used?

_l of pure acid solution and _l of 10% acid solution

36

Step-by-step explanation:

because 10 is 1/2 of 20 and 72/2 = 36

__8__ L of pure acid solution and __64__ L of 10% acid solution

range is infinite on both x and y axis positive and negative

step-by-step explanation:

the circumference of a circle is, 10.676 cm.

step-by-step explanation:

the formula for circumference of a circle is given by:

where

c is the circumference of a circle and

d is the diameter of a circle.

given: diameter(d) = 3.4 cm and use

substitute these values in [1] we get;

cm

therefore, the circumference of a circle is, 10.676 cm