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2 years ago

Complete the square to find the vertex of this parabola. x2 - 8x - y - 4 = 0 ([?], [ ]

Mathematics

1 answer:

konstantin123 [22]2 years ago

7 0

Answer:

-20

Step-by-step explanation:

Complete the square to find the vertex of this parablola x^2-8x-y-4=0 {the second one of -20; so 4,-20}

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5. Find the circumcenter of the triangle. XXX CU 3 (4,2) KNNYA XHENNARO 3 ****************++++++ 5 NET Virtual cla 44,-3) WHEREw

Elan Coil [88]

The circumcenter of a right angled triangle is midpoint of the hypotenuse side.

Determine the midpoint of the hypotenuse.

$\begin{gathered} x=\frac{-4+0}{2} \\ =\frac{-4}{2} \\ =-2 \end{gathered}$

For y coordinate,

$\begin{gathered} y=\frac{2-3}{2} \\ =\frac{-1}{2} \end{gathered}$

So, circumcenter of triangle is,

$(-2,\frac{-1}{2})$

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7 months ago

100 POINTS AND BRAINLIEST

zysi [14]

Answer:

8 square units and $\frac{40}{3}$ square units

Step-by-step explanation:

The area of the triangle ABC is 24 square units.

1. Triangles ABC and FBG are similar with scale factor $\frac{1}{3},$ then

$\dfrac{A_{\triangle FBG}}{A_{\triangle ABC}}=\dfrac{1}{9}\Rightarrow A_{\triangle FBG}=\dfrac{1}{9}\cdot 24=\dfrac{8}{3}\ un^2.$

2. Triangles ABC and DBE are similar with scale factor $\frac{2}{3},$ then

$\dfrac{A_{\triangle DBE}}{A_{\triangle ABC}}=\dfrac{4}{9}\Rightarrow A_{\triangle DBE}=\dfrac{4}{9}\cdot 24=\dfrac{32}{3}\ un^2.$

3. Thus, the area of the quadrilateral DFGE is

$A_{DFGE}=A_{\triangle DBE}-A_{\triangle FBG}=\dfrac{32}{3}-\dfrac{8}{3}=8\ un^2.$

and the area of the quadrilateral ADEC is

$A_{ADEC}=A_{\triangle ABC}-A_{\triangle DBE}=24-\dfrac{32}{3}=\dfrac{40}{3}\ un^2.$

4 0

2 years ago

Read 2 more answers

Sherlock Holmes was sitting comfortably on an armchair on a snowy day. Dr. Watson was sitting beside him reading a book near the

ladessa [460]

The riddle given by Dr. Watson to Sherlock Holmes is:

217 is to 335
896 is to 543
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We need to find the missing number of the third pair of the riddle. This is a ratio and proportion problem.

217/ 335 = 896/ 543 = 345 / x

The value of x is 209.

8 0

3 years ago

Please help i can't figure out if 1/2 comes first or if 1/4 comes first.

fiasKO [112]

Answer:

1/4 goes first

Step-by-step explanation:

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2 years ago

What is the percentage decrease from 40 to 28? :)

mafiozo [28]

Answer:

70%

Step-by-step explanation:

Look it up

5 0

3 years ago