Show an equation and a solution for the problem. arnold needs a 25% solution of nitric acid. he has 20 milliliters (ml) of a 30% solution. how many ml of a 15% solution should he add to obtain the required 25% solution?

What is the quotient of -3/8and-1/3?

The length of the largest fish is 967.74 times greater than the length of the smallest fish. select a variable expression that shows the length of the largest fish, if 8 is the length of the smallest fish. a. s + 967.74 b. \[ \frac{967.74}{s} \] c. 967.74 - s d. 967. 74s

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days