<span>given:
bull's eye radius= x
width of surrounding rings=y

solution:
Radius of the circle=x+4y
Area of the outermost ring=Area of the circle-Area of the penultimate ring =Ď€(x+4y)^2-Ď€(x+3y)^2
=Ď€(x^2+8xy+16y^2-x^2-9y^2-6xy)
=Ď€(2xy+7y^2)
hence the area of the outermost ring in terms of x and y is Ď€(2xy+7y^2).</span>

4 0

3 years ago

A farmer planted 2/5 of his 60 acres in beans and 4/10 of his 60 acres in corn. What fraction of the 60 acres had been planted i

yanalaym [24]

The answer is that 48 have been planted with bean and corn and 24 acres is beans and another 24 acres is corn

5 0

3 years ago

Help i dont know what im doing this is due today

Hunter-Best [27]

Answer:

$\frac{4}{5}$ x + 5 = -3

x=-10

-2x -4 +8x -12

2(3x - 8)

Step-by-step explanation:

Multiply both sides of the equation by 5: 4x + 25 = -15

Move the constant to the right-hand side and change its sign : 4x = -15 - 25

Calculate the diffrerence: 4x = -40

Divide both sides of the equation by 4 : x= -10

Collect like terms: 6x-4-12

Factor out 2 from the expression : 2(3x - 8)

8 0

3 years ago

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