What is the answer to: 2.8 x 10(3) x 3.07 x 10(5) (written in scientific notation) a) 86.0 x 10(8) b) 8.6 x 10(9) c) 859.6 x 10(9) d) 8.6 x 10(8)

7x+8y=-18, 4x-9y=-3 solve the system of equations

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

What numbers are included in the set of integers? what numbers are not included?