Solve the problem.In a chemistry class, 7 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 7.0 L
B. 3.5 L
C. 4.5 L
D. 2.5 L
Answer: B
Mathematics
You might also like to view...
Graph the quadratic function.f(x) = -x2 + 6x - 8
A. 
B. 
C. 
D. 
Mathematics
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = x2 - 8x - 20
A. Increasing on (-?, 4); decreasing on (4, ?) B. Increasing on (4, ?); decreasing on (-?, 4) C. Increasing on (- 4, ?); decreasing on (-?, - 4) D. Increasing on (-?, - 4); decreasing on (- 4, ?)
Mathematics
Write the improper fraction as a mixed or whole number.
A. 3
B. 5
C. 4
D. 4
Mathematics
Solve the problem. Write ratios in lowest terms.Peter's farm has a well that is 3
feet deep. Jill has a well in her backyard which is 10 feet deep. Find the ratio of the depth of Peter's well to Jill's well.
A. 
B. 
C. 
D. 
Mathematics