Ineed with question 31 , am i right ?

Yes, you are! Great job.

Step-by-step explanation:

Multiplying 0.7*4k gets you 2.8 and multiplying .07*-12 gets you -8.4!

Yes you are correct.

Step-by-step explanation: I hope you have a wonderful day. Stay positive. You are a very smart person and I believe it was a great idea to ask people to check your work. Did you know that that is what all the experts do. Even the incredible Albert Einstein had others check his work. Thomas Edison, and the guy who created the first telephone all had their work checked. I believe you will grow to be someone amazing. Have a wonderful day.  

597

step-by-step explanation:

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: