construction 16 b

Find a rule to describe the sequence. 20, 16, 12, 8, 4, ... => start with 20, and multiply by 4 repeatedly or start with 20, and divide by 4 repeatedly or start with 20, and add -4 repeatedly or start with 20, and add 4 repeatedly..

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Find the length of the line-segment connecting points A(8, 12) and B(-16, -4). => 208 units or 8√13 units or 16√13 units or 56 units..

Factor: b 16 - 16 => ( b 8 + 4) ( b 4 - 2) ( b 4 + 2) or ( b 8 - 2) ( b 8 + 8) or ( b 8 + 4) ( b 8 - 2) or ( b 8 + 2) ( b 4 - 4) ( b 4 + 2)..

The quantity of an element whose mass in grams is numerically equal to its atomic mass. In simple terms, atomic mass of an element expressed in grams is the gram atomic mass or gram atom. For example, the atomic mass of oxygen = 16 amu Therefore gram atomic mass of oxygen = 16 ..

. Thus the relative mass of such a particle = 1 a.m.u and the absolute mass = 1.6 x10 -24 g. Because of their electrical neutrality, these particles were called neutron..

Write a rule to describe the sequence 0.8, 1.6, 3.2, 6.4, . . . => Start with 0.8, and subtract 0.2 repeatedly or Start with 0.8, and multiply by 2 repeatedly or Start with 0.8, and multiply by 1 2 repeatedly or Start with 0.8, and add 0.2 repeatedly..

To construct ; given AB = 4.2 cm, BC = 5.6 cm and AC = 3.7 cm (i) Draw BC = 5.6 cm. (ii) With B as centre, draw an arc of radius 4.2 cm. (iii) With C as centre, cut the previous arc at A with another arc of radius 3.7 cm. (iv) Join AB and AC. Then is the required triangl..

Recovery of sulphur from the natural gas includes separating out H 2 S by absorption into monoethanolamine and then converting H 2 S into sulphur by the following sequence of reactions...