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Sladkaya [172]
3 years ago
5

I need to know how to do this one.​

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
3 0

Answer:

x \approx 11.6906

I made the assumption those were right triangles.

Step-by-step explanation:

I like your 30 there.

I found the length in orange by doing 55-30=25.

Now we can try to find the length in light purple by doing orange length plus the length you found which is 25+30=55.

So we can use a trig function to find x.

I made another picture to focus our problem more.

Now if you look at the triangle we have here and refer to trig right triangle definitions, we can setup an equation form this.

The opposite side of the angle, whose measurement is 12 degrees, is x.

The adjacent side of the angle, whose measurement is 12 degrees, is 55.

So I will use the tangent ratio.

\tan(12^\circ)=\frac{\text{opposite}}{\text{adjacent}}

\tan(12^\circ)=\frac{x}{55}

Multiply both sides by 55:

55 \cdot \tan(12^\circ)=x

Now it is handy dandy calculator punching in time:

11.6906 \approx x

x \approx 11.6906

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NO LINKS!! Please help me with these graphs​
Stella [2.4K]

Answer:

  • square: 9 square units
  • triangle: 24 square units

Step-by-step explanation:

Using a suitable formula the area of a polygon can be computed from the coordinates of its vertices. You want the areas of the given square and triangle.

<h3>Square</h3>

The spreadsheet in the first attachment uses a formula for the area based on the given vertices. It computes half the absolute value of the sum of products of the x-coordinate and the difference of y-coordinates of the next and previous points going around the figure.

For this figure, going to that trouble isn't needed, as a graph quickly reveals the figure to be a 3×3 square.

The area of the square is 9 square units.

<h3>Triangle</h3>

The same formula can be applied to the coordinates of the vertices of a triangle. The spreadsheet in the second attachment calculates the area of the 8×6 triangle.

The area of the triangle is 24 square units.

__

<em>Additional comment</em>

We have called the triangle an "8×6 triangle." The intention here is to note that it has a base of 8 units and a height of 6 units. Its area is half that of a rectangle with the same dimensions. These dimensions are readily observed in the graph of the vertices.

7 0
11 months ago
The two intervals (114.9, 115.7) and (114.6, 116.0) are confidence intervals (computed using the same sample data) for μ = true
kenny6666 [7]

Answer:

115.3 hertz

Step-by-step explanation:

For either interval, the value of the sample mean is given by the average of the lower and upper bound of the confidence interval. Since both intervals were constructed by using the same sample, both values should be equal.

For the first interval:

M=\frac{114.9 + 115.7}{2} \\M=115.3\ hertz

For the second interval:

M=\frac{114.6 + 116.0}{2} \\M=115.3\ hertz

4 0
3 years ago
I know I haven't been on this app for a long time but can ya'll help me plzz
nexus9112 [7]

Answer:

2774

Step-by-step explanation:

5 0
2 years ago
Use the Remainder Theorem to determine f(2) when f(x) = -x3 + 6x - 7
saul85 [17]

Step-by-step explanation:

f(2)= -2×2×2+ 6×2 -7

=-8+12-7

=-3

7 0
3 years ago
The density of people (number of people per mile) during the evening rush hour for the 5 mile stretch along a certain sidewalk i
Kisachek [45]

Answer:

a.  \int\limits^5_0 {f(x)} \, dx

Step-by-step explanation:

Since f(x) is the function for the populational density at a certain sidewalk for a 5 mile stretch, a definite integral of that function will yield the total number of people within the integration intervals. If we are interested in the number of people in the whole 5 mile stretch, we must integrate f(x) from x = 0 miles to x = 5 miles:

\int\limits^5_0 {f(x)} \, dx

Therefore, the answer is alternative a.

5 0
3 years ago
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