Answer:
The addition of given fractions is 
Therefore 
Step-by-step explanation:
Given fractional expression is 
To find the addition of given fractions :
Adding the given fractions we get

( here taking 12 as LCM )


Therefore 
The addition of given fractions is 
Answer:
a = 8 and b = 15
Step-by-step explanation:
I just finished it :D
So James covers 8 meters in the first second....then he sprints 9 meters per second......
9 seconds after the race....so there are 8 seconds that he is sprinting 9 meters per second.....(8 * 9) = 72 meters....plus the 8 meters for the 1st second = (72 + 8) = 80 meters....
and if it is 100 meter race, and he has ran 80 meters, then that leaves 20 meters from the finish line....answer is D
Try multiplying all the sides.
Answer:
2000 bacteria
Step-by-step explanation:
The number of bacteria double 2 times because 170/85=2. 500 times 2 is 1000 and 1000 times 2 is 2000.