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What makes two line parallel?
if they never cross and are going in the same direction (example: railroad tracks)
When do you need to regroup in subtraction?
You need to regroup when you have something like 46-39. You would cross out the 6 and make it a 16, because you are taking ten from the 4, then you cross out the 4 then make it a three, then you should get 7.
What is the formula for the volume of water held in a semicircular trough?
To calculate the volume of water in a semicircular trough, one should figure out the area of the cross section (the semicircle) first. Then, this number should be multiplied by the length of the trough.
If you are stopped at a crossing where there is more than one set of tracks before you start across?
CROSSBUCK SIGN Crossbuck signs are found at highway-rail intersections. They are yield signs. You are legally required to yield the right-of-way to trains. Slow down, look and listen for a train, and stop if a train approaches. Railroad crossbuck signs are found at most crossings. If there is more than one track, the sign below the crossbuck will show the number of tracks at the crossing FLASHING RED LIGHT SIGNALS At many highway-rail crossings, the crossbuck sign has flashing red lights and bells. When the lights begin to flash, stop! A train is approaching. DO NOT STOP ON THE TRACKS OR WITHIN 15 FEET OF THE CROSSING. If there is more than one track, make sure all tracks are clear before crossing. Do not move forward until you can do so safely. In heavy traffic make sure there is room for your vehicle on the other side before starting to cross. GATES Many crossings have gates with flashing red lights and bells. Stop when the lights begin to flash and before the gate lowers across your road lane. If the gates are down, the road is closed. It is against the law to drive around or under a crossing gate, either down or being opened or closed. Do not move forward until the gates are raised and the lights stop flashing as there may be a train approaching on an adjacent track.
When you multiply fraction do you cross multiply?
No you only cross multiply when your working with percent
