Let x be the number of mm of pure alcohol to be added:
I will add the mm to express the volume in mm
100mm.(19%) + (100%).x mL = (100 mL+x mL).(40%).
Now right again without the %
100.(0.19) + x.(1) = (100+x).(0.4)
19 + x = = 40 + 04x
x - 0.4x = 40 - 19
0.6 x = 21
x = 21/0.6 and x = 35 mL. This te quantity of pure alcohol should to be added to get a solution at 40%.
94 is not a prime number. Because you have a "4" at the end of 94 that means that it is divisible by 2. 2 x 47 is 94. Because it has factors more than one and itself, it has to be a composite number
Answer:
it's just ( -3.3 )but I need to put 20 + words and stuff so read this if you would like
Answer:
<em>4/2 </em>is the ratio and the diameter is <em>2</em>
Step-by-step explanation:
<em>4/2 </em>is a fraction and <em>2 </em>is when you divide 4/2. Correct me if I am wrong.