Answer:

Step-by-step explanation:
we know that
The formula to find the sum is equal to

where
a1 is the first term
an is the last term
n is the number of terms
In this problem we have



substitute the values in the formula

True
Every rational number<span> can be written as a fraction a/b , where a and b are </span>integers<span>. ... If a </span>number<span> is a whole </span>number<span>, for instance, it must also be an </span>integer<span> and a </span>rational<span>.</span>
Answer:
Its D
Step-by-step explanation:
Trust the bro
Answer: 12-n=25
-n=25-12
-n=13
Step-by-step explanation: