What are the solutions of the following system?

StartLayout Enlarged left-brace 1st row 10 x squared minus y = 48 2nd row 2 y = 16 x squared + 48 EndLayout
(2 StartRoot 3 EndRoot, 120) and (negative 2 StartRoot 3 EndRoot, 120
(2 StartRoot 3 EndRoot, 120) and (negative 2 StartRoot 3 EndRoot, negative 72
(6, 312) and (–6, 312)
(6, 312) and (–6, –264)

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Of the following, which statement or statements accurately reflect a way in which credit can be safer than cash? i. if your credit card gets stolen, you can cancel it and get your money back. ii. it is harder to lose a single credit card than a large number of bills. iii. if a merchant does not honor the agreement, you can call the credit company and dispute the charges. a. i and iii b. ii only c. iii only d. i, ii, and iii

What is (2.5a^8n)^3 · (0.4^7n)^3 can you plz simplify this quickly offering lots of points