- Integrate (7csc^2t-9e^t)?

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Http://maleenhancementshop.info/testonix/? If the lines kx-4y=6 and kx+3y=-8 intersect at a point with x=5, then find the value of k? What is the pH of 50 ml of 0.1M Na2CO3 solution + 100 ml of 0.2MHCl? Why cant i see the moon tonight? Describe the physical properties of copper sulfate pentahydrate & anhydrous copper sulfate. Describe what happens and explain why it happens?