Answer:
A and B
Step-by-step explanation:
An equivalent system of equation is found by adding or subtracting the second equation or when any multiple of both equations are added or subtracted to each other.
Let us see part by part.
A.
A) Amount of money earned by seji = s
Amount of money earned by Gavin = g
So, equation would be: s+g = 425
B) Solving the system: s+g = 425
we know, g = s+25
Substitute it into the equation:
s+s+25 = 425
2s = 400
s = 200
so, g = 200+25 = 225
C) Graph for the equation, Mark (s,g) = (200,225) then, draw the line from the origin.
D) Seiji earned = $200
Gavin earned = $225 [ Solved in B part ]
Hope this helps!
The polynomial (a + b)(a² – ab + b²) is reconstructed as (2x + y)(4y² – 2xy + y²), then the correct option is C.
<h3>What is polynomial?</h3>
Polynomial is an algebraic expression that consists of variables and coefficients. Variables are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.
Tomas learned that the product of the polynomials (a + b)(a² – ab + b²) was a special pattern that would result in a sum of cubes, a³ + b³.
His teacher put four products on the board and asked the class to identify which product would result in a sum of cubes if a = 2x and b = y.
Then the polynomial equation will be
(2x + y)(4y² – 2xy + y²)
More about the polynomial link is given below.
brainly.com/question/17822016
Answer:
73
Step-by-step explanation:
Mean is the number of copiers combined / number of months
79 * 5 = 395
93 + 30 + 138 + 61 = 322
395 - 322 = 73
