Simplify.
÷ 
A. - 
B. 
C. 
D. - 
Answer: A
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Solve the problem.A chemist needs 140 milliliters of a 62% solution but has only 56% and 84% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 20 mL of 56%; 120 mL of 84% B. 30 mL of 56%; 110 mL of 84% C. 110 mL of 56%; 30 mL of 84% D. 120 mL of 56%; 20 mL of 84%
Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.68 kg = 
lb
A. 30.6 lb B. 149.6 lb C. 72.1 lb D. 172.7 lb
Give the order of the matrix, and identify the given element of the matrix.
; a34
A. 4 × 5; 1 B. 20; -7 C. 4 × 4; 2 D. 5 × 4; -8
Provide an appropriate response.Describe the three possible outcomes when graphing a system of equations, and relate each to the type of solution(s) each system has.
What will be an ideal response?