Addition and Subtraction of mixed numberJada bikes 4 1/2 kilometers and then stops to rest. After resting Jada bikes another 1 4/5 kilometers. Maria bikes 7 9/10 kilometers without resting .
a. How far does Jada bike altogether ?
b. How much father does Maria bike than Jada ?
A if you don't undestand don't answer thx

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil