Find the shaded area​

The parabola y = x ² and the line x + y = 12 intersect for

x ² = 12 - x

x ² + x - 12 = 0

(x - 3) (x + 4) = 0

===>   x = 3

so you can compute the area by using two integrals,

Then the area you want is

Alternatively, you can subtract the area bounded by y = x ², x + y = 12, and the y-axis in the first quadrant from the area of a triangle with height 12 (the y-intercept of the line) and length 12 (the x-intercept).

Such a triangle has area

1/2 × 12 × 12 = 72

and the area you want to cut away from this is given by a single integral,

The integral has a value of

and so the area of the shaded region is again 72 - 45/2 = 99/2.

step-by-step explanation:

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80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh