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kap26 [50]
2 years ago
10

Please help giving brainlist

Mathematics
2 answers:
Vlad [161]2 years ago
7 0

Answer:

None of the choices are correct.

Step-by-step explanation:

The angles are marked to show they are <em>equal</em>, therefore the line segment that divides the angle into two equal parts is an <u>angle bisector</u>.

<u>Angle Bisector Theorem</u>

The angle bisector of any angle will divide the opposite side in the ratio of the sides containing the angle.

\implies \sf \dfrac{5}{4}=\dfrac{x}{12-x}

\implies \sf5(12-x)=4x

\implies \sf 60-5x=4x

\implies \sf 9x=60

\implies \sf x=\dfrac{60}{9}

\sf \implies x=\dfrac{20}{3}

sashaice [31]2 years ago
7 0

\\ \rm\Rrightarrow \dfrac{4}{5}=\dfrac{12-x}{x}

\\ \rm\Rrightarrow 4x=5(12-x)

\\ \rm\Rrightarrow 4x=60-5x

\\ \rm\Rrightarrow 9x=60

\\ \rm\Rrightarrow x=6.67

Option C none of the above

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3 years ago
Describe triangle ABC in terms of its sides and angles
Nimfa-mama [501]

Answer:

Right angle triangle

Step-by-step explanation:

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Read 2 more answers
Find the value of x<br>​
Monica [59]

X= 130°

Step-by-step explanation:

From E, draw EF || AB || CD.

Now, EF || CD and CE is the transversal.

So; <DCE + <CEF = 180° [co. int. <s]

x° + <CEF = 180°

<CEF = (180° – x°).

Again, EF || AB and AE is the transversal.

So; <BAE + <AEF = 180° 01 [co. int. <s ]

105° + <AEC+ <CEF = 180°

105° +25° + (180° – x°) = 180°

x° = 130°

I hope I helped you^_^

7 0
3 years ago
There are two x intercepts for y = (x + 2)(x - 1)<br> The first is<br> and the 2nd is
Vsevolod [243]

Answer:

(-2,0) and (1,0)

Hope this helps!

5 0
3 years ago
How tall is a building that casts a ​78-ft shadow when the angle of elevation of the sun is 30 degrees​?
Marta_Voda [28]

Answer: 45.03\ ft

Step-by-step explanation:

Given

The length of the shadow is 78 ft

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Suppose the height of the building is h

From the figure, we can write

\tan 30^{\circ}=\dfrac{h}{78}\\\\h=78\tan 30^{\circ}\\\\h=45.03\ ft

The height of the building is 45.03 ft

8 0
3 years ago
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