Answer:
that other person is right
Answer:
14
Step-by-step explanation:
Let's call the number x.

Subtract 3 from both sides:

Multiply both sides by 2:

Hope this helps!
Answer:
its 1/3
Step-by-step explanation:
take the fraction divided by 5
Answer:
20
Step-by-step explanation:
Sn = (n/2)(a1 + a1 + d(n-1)), where S = sum, a1 = first term, n = number of terms, d = common difference
400 = (n/2)(1 + 1 + 2(n - 1))
400 = (n/2)(2 + 2n - 2)
400 = (n/2)(2n
400 = n2
20 = n
Twenty numbers are in the set.
<span><em>The independent variable is "The number of his friends" </em>
<em>Equation:</em>
<em>5x</em>
which is same as <em>5</em><em></em><em />×x
</span>