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sergeinik [125]
3 years ago
14

Write the normal form of the equation of the line passing through (1, 2) and with a normal vector n = 3 - 41. Write its general

form. + Drag and drop your images or click to browse...
Mathematics
1 answer:
Crank3 years ago
7 0

Answer:

general form of  is 3x - 4y = -5

Step-by-step explanation:

Equation pass through given point P (1,2)

And normal vector is given as  \begin{bmatrix}1\\ 2\end{bmatrix}

nX = np

\begin{bmatrix}3\\ -4\end{bmatrix} \begin{bmatrix}x\\ y\end{bmatrix}  =   \begin{bmatrix}3\\ -4\end{bmatrix}  \begin{bmatrix}1\\ 2\end{bmatrix}

\begin{bmatrix}3\\ -4\end{bmatrix}  \begin{bmatrix}x\\ y\end{bmatrix} = -5

therefore general form is written as ax + by = k

3x - 4y = -5

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If two angles are supplementary, then they form a linear pair. IS THIS STATEMENT TRUE OR FALSE? WHY?
seraphim [82]

<em>Answer:</em>

<em>(True)</em>

<em>Yes they form a liner pair.</em>

<em>Step-by-step explanation:</em>

<em>They form a because supplementary angles are two angles the sum of whose measures is 180º, so they can form a liner pair. Sometimes they may be be two separate angles. Linear pairs are adjacent angles who share a common ray and whose opposite rays form a straight line. </em>

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5 0
3 years ago
What number completes both equations 1/4 divided 9 =? ? Times 9= 1/4
Dmitry_Shevchenko [17]
4·9 = 9x = 1/4
(36 = 9x = 1/4) ·4
144 = 36x
144/36 = x
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6 0
3 years ago
Statuary Hall is an elliptical room in the United States Capitol in Washington, D.C. The room is also called the Whispering Gall
dalvyx [7]

Answer: a) \frac{x^{2} }{2352.25 } + \frac{y^{2} }{529} = 1

b) The distance of two foci is 85.4 feet

c) Area = 3502.67 square feet

Step-by-step explanation: a) An ellipse has the equation in the form of:

\frac{x^{2} }{a^{2} }+\frac{y^{2} }{b^{2} } = 1, where a is the horizontal axis and b is the vertical axis.

For the Statuary Hall, a = \frac{97}{2} = 48.5 and b = \frac{46}{2} = 23, so the equation will be

\frac{x^{2} }{2352.25 } + \frac{y^{2} }{529} = 1.

b) To determine the distance of the foci, we have to calculate 2c, where c is the distance between one focus and the center of the ellipse. To find c, as a, b and c create a triangle with a as hypotenuse:

a^{2} = b^{2} + c^{2}

c^{2} = a^{2} - b^{2}

c = \sqrt{48.5^{2} - 23^{2} }

c = 42.7

The distance is 2c, so 2·42.7 = 85.4 feet.

The two foci are 85.4 feet apart.

c)The area of an ellipse is given by:

A = a.b.π

A = 48.5 · 23 · 3.14

A = 3502.67 ft²

The area of the floor room is 3502.67ft².

3 0
3 years ago
A ____________________ is a measurement of the change in variables over a specific period of time.
Montano1993 [528]

Answer:

rate of change

Step-by-step explanation:

The rate of change (ROC) is the speed at which a variable changes over a specific period of time.

5 0
3 years ago
Quadrilateral ABCD with vertices A(-9, 2), B(-8, 8), C(-4, 6), and D(-2, 2) is shown. You want to reflect quadrilateral ABCD in
telo118 [61]

Answer:

See explanation.

Step-by-step explanation:

Graph the quadrilateral. By inspection, you can tell where the midpoint is. (see attachment 1)

Now, I'll draw a line through it. (see attachment 2)

To reflect across a line, think about the points traveling across the line the same number of spaces the point is from the line. For example, point A is three away from the line. So, A' will be 3 away from the other side. The coordinates will be at (-3,2). (see attachment 3).

Do the same for the other points, and you'll have your image.

7 0
2 years ago
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