14 added to 19 times an unknown number is 195. what is the value of the unknown number?

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

What is the probably of getting heads when poing a coin and getting a number greater than or equal to 5 when rolling a single diea) 1/6b) 1/3c) 1/4d) 1/12

What is the equivalent fraction for the following fraction using 5 as the multiplier? 1/2