Definition of a rational number:
A rational number is a number that can be written as fraction of integers.
19/10 is a fraction.
19 and 10 are integers.
19/10 follows exactly the definition of a rational number, so it is rational.
What you have to do to be able to find the answer is $672 divided be $12. That should give you how many cars the soccer team washed.
Answer:
-279
Step-by-step explanation:
a=64
d=t2-t1=57-64=-7
t50=a+49d=64+49×(-7)
=64-343
=-279
Answer:
I'm assuming you meant arithmetic progression. If the common difference is d and because 18 - 8 = 10 we can write 17 + 10d = 13. Solving for d we get d = -0.4 or -2/5.
