What is the answer to 12 plus -7?

Is all hands on deck a synecdoche? What is gross inequality? In roman numberals what does M stand for? What is CCCXVI in roman numerals? What has length and width but no height? A rectangular has a perimeter of 12 m if each side is a whole number of meters what is the possible dimensions for the length and width? What are the prime factors of 63 show work? How many feet in 8 meters? What is 45 multiplied by 12 by 52? What is 0.001008 in scientific notation? When does log p X equals 0? 20240 is what percent? How deep hole for 6x6x16 post? What is 20 percent off of 99.99? What geometric shapes are strongest or most stable in bridge design? What is parallel to y equals 2x-5? How many gallons of water in a 14 foot wide pool and 4 foot deep pool? What does a second equal? How do you do percentage on math? How do you determine the area of an oval racetrack the cars race on?