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This is something that as you use them more, they will come more naturally, but there are a few ways to remember them. In general, the preterite is use for a past action that has been completed and is fin...

Blood leaves the right side of the heart via the pulmonary artery, which takes deoxygenated blood to the lungs so gas exchange may occur. Numerous alveoli are found here and these alveoli possess many inv...

2 x -4 = -8 -8 x 1 = -8 (2x^2-8x)+(x-4) 2x(x-4) + 1(x-4) (2x+1)(x-4)

sinx = o/h sinx x h =o sin30 x 8 = 4cm The opposite is 4cm

An ionic compound in its molten or liquid form is able to conduct electricity due to the free movement of conducting metal ions that can carry charge