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Dafna11 [192]
3 years ago
10

Brainiest To Best Answer! What PSAT Score do I need to get a 99 percentile?

Advanced Placement (AP)
1 answer:
kumpel [21]3 years ago
4 0
You need to get a total composite score that is more than 1450!

Hope this helps!
Can u plz mark me as brainliest? I really need it!
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Compare and contrast the lasting contributions of the sumerians, jews, phoenicians, and indo-europeans. which culture do you bel
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3 years ago
The regions bounded by the graphs of y=x2 and y=sin2x are shaded in the figure above. What is the sum of the areas of the shaded
Alex Ar [27]

Answer:

The sum of the area of the shaded regions = 0.248685

Explanation:

The sum of the area of the shaded region is given as follows;

The point of intersection of the graphs are;

y = x/2

y = sin²x

∴ At the intersection, x/2 = sin²x

sinx = √(x/2)

Using Microsoft Excel, or Wolfram Alpha, we have that the possible solutions to the above equation are;

x = 0, x ≈ 0.55 or x ≈ 1.85

The area under the line y = x/2, between the points x = 0 and x ≈ 0.55, A₁, is given as follows

1/2 × (0.55)×0.55/2 ≈ 0.075625

The area under the line y = sin²x, between the points x = 0 and x ≈ 0.55, A₂, is given using as follows;

\int\limits {sin^n(x)} \, dx = -\dfrac{1}{n} sin^{n-1}(x) \cdot cos(x) + \dfrac{n-1}{n} \int\limits {sin^{n-2}(x)} \, dx

Therefore;

A_2 = \int\limits^{0.55}_0 {sin^2x} \, dx = \dfrac{1}{2} \left [x -sin(x) \cdot cos(x) \right]_0 ^{0.55}

∴ A₂ =1/2 × ((0.55 - sin(0.55)×cos(0.55)) - (0 - sin(0)×cos(0)) ≈ 0.0522

The shaded area, A_{1 shaded} = A₁ - A₂ = 0.075625 - 0.0522 ≈ 0.023425

Similarly, we have, between points 0.55 and 1.85

A₃ = 1/2 × (1.85 - 0.55) × 1/2 × (1.85 - 0.55) + (1.85 - 0.55) × 0.55/2 = 0.78

For y = sin²x, we have;

A_4 = \int\limits^{1.85}_{0.55} {sin^2x} \, dx = \dfrac{1}{2} \left [x -sin(x) \cdot cos(x) \right]_{0.55} ^{1.85} \approx 1.00526

The shaded area, A_{2 shaded} = A₄ - A₃ = 1.00526 - 0.78 ≈ 0.22526

The sum of the area of the shaded regions, ∑A = A_{1 shaded} + A_{2 shaded}

∴ A = 0.023425 + 0.22526 = 0.248685

The sum of the area of the shaded regions, ∑A = 0.248685

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Given that a solution containing analyte is yellow, what complementary color does it absorb and what is that color's approximate
Harrizon [31]

If wavelengths of light from a definite region of the spectrum are engrossed by a material, then the materials will appear to be the complementary color. If violet light with wavelength of 400nm is immersed, the material will look yellow. If the material engrosses blue you will perceive the color orange.

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What is the best wood to use for a toy maze and why (bearing in mind it will be sold in art galleries and giftshops, it is deskt
valentinak56 [21]

Answer:

Maple wood

Explanation:

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To avoid confusion from a misplaced modifier, a participial phrase should be placed
svet-max [94.6K]

To avoid confusion from a misplaced modifier, a participial phrase should be placed at the beginning of the sentence.

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