19 is a prime number so you can multiply 1*19 ,
hope this helps (^....^).
You can use base ten blocks to find 2.16/ 3 by using 7 base ten blocks and 2 base one blocks.
Answer:
I think it's supposed to be 8x+2=14
The train is going 90 mph.
This one is easy to explain, if you have 90 miles travelled in one hour of time, then you have 90 mi/1 hour, or 90 mph.
Check the picture below.
now, that's the volume of just one, well, they'll be using 250 of those, so their volume will be 250 * V.