Which is the best estimate for (2.8 times 10 Superscript 3 Baseline) (4.1 times 10 Superscript 6 Baseline) written in scientific notation?

7 times 10 Superscript 9
1.2 times 10 Superscript 10
1.5 times 10 Superscript 10
12 times 10 Superscript 18

Two angles are adjacent, as shown in the diagram below. part a: use complete sentences to describe the relationship between the adjacent angles. part b. set up an equation and solve for x. in your answer, include the equation, your calculations and the value of x. part c. use your equation from part a and the value of x from part b to prove your equation to be true for the adjacent angles in the diagram.