sketch the graph of the function y=20x-x^2, and approximate the area under the curve in the interval [0, 20] by dividing the area into the given numbers of rectangles. Part A; use five rectangles to approximate the area under the curve. Part B: use 10 rectangles to approximate the area under the curve. Part C: calculate the area under the curve using rectangles as their number becomes arbitrarily large (tends to infinity). you do not need to sketch the rectangles.

it's d

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.