The work shows the first steps for writing a partial fraction decomposition. Which equations can be used in a system of equations to solve for the unknowns. Check all that apply.

A = 0
xxxB = 0
D = –5
A + C = 0
2A + 2B = 4
it's B C D the three in the middle

Partial fraction decomposition involves breaking down algebraic fractions into smaller piece.

The equations that can be used are:

  ,     and    

From the question. we have:

Collect like terms

Compare both sides, using the power of x

Divide both sides of by 2x^3

Divide both sides of by 2x^2

Divide both sides of by x

Substitute in

Hence, the equations that can be used are:

and

Read more about partial fraction decomposition at:

link

B C D

Step-by-step explanation:

center= (-2,0)

radius= sqrt2/2

step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6