Jason and megan are brother and sister. jason is 4 years older than megan. if jason is 16 yearsold write and solve an equation to find megans age

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

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.

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?