An object is moving with a constant velocity of 278 m/s. how long will it take it to travel 7500 m, using the formula delta x=vt+1/2at^2

When describing down syndrome, it's important to note that a. it can be classified as a single-gene disorder b. it is caused when red blood cells cannot properly form hemoglobin c. it causes infected males to have low testosterone levels d. it is usually caused by three copies of chromosome 21 select the best answer from the choices provided. a b

Dry ice is solid carbon dioxide that is used in the transport of food and medicine. dry ice becomes a gas at –78.5°c without becoming a liquid first.

Plss anybody know how to do this? ? i need the answers from a through d