1+586568568565+9598685984984985-487 4+648646846464*45546484646464646464 84+49+4646848648644646846468486464+ 44468864846848648484684648646484648 84684888855588555855855855855885584 68646*58=x x=?

this is a looot of points (100)

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.