Answer:
is number 2
Step-by-step explanation:
Answer:
680
Step-by-step explanation:
Use the binomial coefficient where you choose 
numbers out of 
possible numbers and find the total amount of combinations since order does not matter:
Thus, you can make 680 three-non-repeating-number codes
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%.
Answer: 1.73205080757
Step-by-step explanation: The square root of 3 is the positive real number that, when multiplied by itself, gives the number 3. It is more precisely called the principal square root of 3, to distinguish it from the negative number with the same property. It is denoted by √3. The square root of 3 is an irrational number.
Solution:
Given:
<u>Substitute the values into the equation:</u>
- x⁶ - x/4y
- => [(-4)⁶] - (-4)/4(4)
<u>Simplify the numerator and the denominator:</u>
- => [(-4) x (-4) x (-4) x (-4) x (-4) x (-4)] + 4/16
- => [(-64) x (-64)] + 4/16
- => [4096] + 4/16
- => 4100/16
<u>Simplify the fraction:</u>
- => 4100/16
- => 1025 x 4/4 x 4
- => 1025/4
Correct option is B.
