Solve the problem.A chemist needs 210 milliliters of a 41% solution but has only 5% and 68% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 100 mL of 5%; 110 mL of 68%
B. 120 mL of 5%; 90 mL of 68%
C. 110 mL of 5%; 100 mL of 68%
D. 90 mL of 5%; 120 mL of 68%
Answer: D
Mathematics
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Find the matrix product, if possible.
A. 
B. 
C. 
D. 
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Solve.When an object is dropped to the ground from a height of h meters, the time it takes for the object to reach the ground is given by the equation t = 
, where t is measured in seconds. If an object falls 122.5 meters before it hits the ground, find the time it took for the object to fall.
A. 25 seconds B. 6 seconds C. 5 seconds D. 8 seconds
Mathematics
Evaluate the expression for the given value or values.x ÷ 6 for x = 342
A. 57 B. 59 C. 55 D. 60
Mathematics
Solve the equation.n + 8 = 16
A. n = 8 B. n = 16 C. n = 24 D. n = -8
Mathematics