Answer:
27
Step-by-step explanation:
129-(-1) = 130
130/5 = 26
26+1 = 27
n = 27
This is Arithmetic sequence
a = -1
Common difference = 4 - (-1) = 4 +1 = 5
an = a + (n-1)d
129 = -1 + (n-1)*5
129 + 1 = (n-1)*5
130 = (n-1)*5
130/5 = n - 1
26 = n - 1
n = 26 + 1
n =27
2
f(x)=x^2+1
now,
f(1)=1^2+1
=1+1
=2
it's answer is
volume of a cone = 21
15
How does it need solved? By graphing? Substitution?
Step-by-stepidf explanation:
