A distant star is 9.77 x 10^4 times bigger than Neptune. If the volume of Neptune is 6.3 x 10^13, what is the volume of the distant star, in cubic kilometres? Give your answer in scientific notation and do not include units. Round the coefficient to the nearest hundredth.

The measure of an angle is 117°. what is the measure of a supplementary angle?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Find │–14│ a. 14 b. –14 c. start fraction 1 over 14 end fraction