Solve the mixture problem.How many liters of a 60% alcohol solution must be mixed with 90 liters of a 90% solution to get a 80% solution?
A. 13.5 L
B. 4.5 L
C. 135 L
D. 45 L
Answer: D
Mathematics
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Add.18,724,5052,589,716835,223
A. 30,308,414 B. 30,438,414 C. 37,825,421 D. 30,296,284
Mathematics
Solve the problem.Which one of the following equations is set up for direct use of the square root property?
A. 3x2 + 5x + 7 = 0 B. x2 + x = 7 C. (3x + 5)(x + 7) = 0 D. (3x + 5)2 = 7
Mathematics
Write the equivalent value._____ feet = 1 yard
A. 3 B. 7 C. 12 D. 2
Mathematics
Find the second term in the expansion of  figure 1.png)
What will be an ideal response?
Mathematics