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kaheart [24]
3 years ago
10

Two angles are supplementary. The first angle measures 60°. What's the measurement of the second angle?

Mathematics
2 answers:
Juli2301 [7.4K]3 years ago
6 0

Answer: Option D

120°

Step-by-step explanation:

By definition it is said that two A and B angles are supplementary if the sum of A and B is equal to 180 °

In this case we know that one of the angles is 60 °

This is: A = 60 °

So to find the second angle we propose the following equation:

60\° + B = 180\°

Then we solve the equation for B.

B = 180\°-60\°

B = 120\°

So the second angle is 120 °

The answer is option D

Juliette [100K]3 years ago
5 0

Answer:

D

Step-by-step explanation:

The sum of supplementary angles is 180°

To find the supplement of 60° subtract it from 180°, that is

second angle = 180° - 60° = 120° → D

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The total cost, c, of bananas is proportional to the number of pounds, p, purchased. Bananas are selling for 79 cents per pound
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C = 0.79p

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This equation means that the cost of the bananas is 0.79 cents per pound.

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3 years ago
Find the inverse of the function f (x) = 0.25x + 12.
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Answer:

g(x)=4x-48

Step-by-step explanation:

f(x)=0.25x + 12

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y=0.25x + 12

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x=0.25y + 12

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5 0
2 years ago
An ellipse has foci located at (2,4) and (2,16) and vertices located at (2,0) and (2,20) this ellipse is vertical
pochemuha

Answer:

The equation of the ellipse is \frac{(x-2)^{2}}{8^{2}}+\frac{(y-10)^{2}}{10^{2}} = 1.

Step-by-step explanation:

The statement is incomplete, the most probable outcome may be the equation of the ellipse based on information given.

The equation of an ellipse whose major axis is vertical and is centered at a point different from origin is defined by:

\frac{(x-h)^{2}}{b^{2}} + \frac{(y-h)^{2}}{a^{2}} = 1 (1)

Where:

(h,k) - Coordinates of the center of the ellipse.

(x,y) - Coordinates of a point in the line of the ellipse.

a - Length of the major semiaxis.

b - Length of the minor semiaxis.

The coordinates of the center of the ellipse is midpoint of the segment between vertices, which are collinear with foci:

(h,k) = \frac{1}{2}\cdot V_{1} (x,y) + \frac{1}{2}\cdot V_{2}(x,y) (1)

Where V_{1} (x,y) and V_{2} (x,y) are the coordinates of the vertices.

If we know that V_{1} (x,y) = (2,0) and V_{2} (x,y) = (2, 20), then the coordinates of the center ellipse are:

(h,k) = (2, 10)

The length of the semimajor axis can be determined by using the following vectorial expression, which is equivalent to the Pythagorean Theorem:

a = \sqrt{[(h,k)-V_{1}(x,y)]\,\bullet\,[(h,k)-V_{1}(x,y)]} (2)

If we know that (h,k) = (2, 10) and V_{1} (x,y) = (2,0), then the length of the semimajor axis is:

a = \sqrt{(2-2)^{2}+(10-0)^{2}}

a = 10

And the length of the minor semiaxis is found by means of this Pythagorean identity:

b = \sqrt{a^{2}-c^{2}} (3)

Where c is the length between the center and any of the foci. This distance can be found by using this vectorial formula:

c = \sqrt{[(h,k)-F_{1}(x,y)]\,\bullet\,[(h,k)-F_{1}(x,y)]} (4)

If we know that (h,k) = (2, 10) and F_{1} (x,y) = (2,4), then the length between the center and any of the foci is:

c = \sqrt{(2-2)^{2}+(10-4)^{2}}

c = 6

And the length of the minor semiaxis is:

b = \sqrt{10^{2}-6^{2}}

b = 8

FInally, the equation of the ellipse is \frac{(x-2)^{2}}{8^{2}}+\frac{(y-10)^{2}}{10^{2}} = 1.

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Yuri [45]

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