The series 7 + 16 + 25 +34 +43 +52 + 61 is an illusration of arithmetic series
The sigma notation of the series is: 
<h3>How to write the series in sigma notation?</h3>
The series is given as:
7 + 16 + 25 +34 +43 +52 + 61
The above series is an arithmetic series, with the following parameters
- First term, a = 7
- Common difference, d = 9
- Number of terms, n = 7
Start by calculating the nth term using:
a(n) = a + (n - 1) * d
This gives
a(n) = 7 + (n - 1) * 9
Evaluate the product
a(n) = 7 - 9 + 9n
Evaluate the difference
a(n) = 9n - 2
So, the sigma notation is:

Read more about arithmetic series at:
brainly.com/question/6561461
Answer and Step-by-step explanation:
Solve for b.
A = 
Divide by h and multiply by 2 from both sides.

Subtract a from both sides.

Answer:
197in^2
Step-by-step explanation:
5x5=25(top face)
5x5=25(left face)
9x5=45(bottom face)
6.4x5=26(right face)
Front and behind face: trapezoid area (trapezoid formula h x (a+b)/2)
(5+9)/2 x 5=7x5=35
35+35+25+25+45+25=197in^2
earrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
p*x+57-(-75*x+q)=0
In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.
Unless there is none then in that case there very well may be infinite solutions
Answer:
C: Roman has a 5-liter jug of water. How many half-liter bottles of water can he fill?
Step-by-step explanation:
5 ÷ 1/2
A: Roman has a half liter jug of water. How many 5-liter bottles of water can he fill? .5 ÷ 5
B: Roman has a 10-liter jug of water. How many half-liter bottles of water can he fill?
10 ÷ .5
C: Roman has a 5-liter jug of water. How many half-liter bottles of water can he fill? 5 ÷ 1/2