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EastWind [94]
3 years ago
15

Find A round to the nearest tenth! laws of cosines​

Mathematics
1 answer:
Stolb23 [73]3 years ago
5 0

Check the picture below.

make sure your calculator is in Degree mode.

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Work out the area of the shaded region.
Makovka662 [10]

Answer: Area of the shaded region is 6.867 square cm

Step-by-step explanation:

The shaded area corresponds to the difference of the area of the rectangle and the area of the semicircle.

Area of the rectangle = 4 times 8 = 32 cm^2

Area of the semicircle = 0.5 * pi * r^2   (where r is the radius, i.e., half of the diameters, i.e., 4 cm). So Area = 0.5*pi*4^2 = 25.133 cm^2

The difference: 32 - 25.133 = 6.867 cm^2 (area of the shaded region)

5 0
3 years ago
Please help me fast!!
elixir [45]

Answer:

y = -\frac{1}{4}x

Step-by-step explanation:

1. The slope-intercept form of a linear equation is y = mx + b, where y = y-coordinate, m = slope, x = x-coordinate, and b = slope.

2. To find the slope, let's take the two points (0,0) and (-40,10). After that, let's plug in the values to their corresponding variable in the formula: \frac{y_2-y_1}{x_2-x_1}

  • \frac{10-0}{-40-0}
  • \frac{10}{-40}
  • -\frac{1}{4}

3. Since we now know our slope, the equation looks like this so far: y = -\frac{1}{4}x + b.

4. Because b is the y-intercept, b = 0 because the line intersects the y-axis at (0,0).

5. Now that we have the values of m and b, we plug in them to get the equation of: y=-\frac{1}{4}x

3 0
2 years ago
State three other coordinates (within one rotation) for the polar point (4, -2pi/3)
nevsk [136]
The answer is what is shown on the phone

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3 years ago
Can someone help me on this question please
umka21 [38]
I THINK the answer is 5.
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Smith and his friends are gaming online on a popular website. An hour later, 6 friends go offline. Five of them continue playing
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Answer:11 people

Step-by-step explanation:

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2 years ago
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