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ryzh [129]
3 years ago
11

Question 4/11 i’ll mark brainliest

Mathematics
1 answer:
nirvana33 [79]3 years ago
3 0

Answer:

The two pieces of information are needed to prove that line AB is a perpendicular bisector of line CD are:

m∠AGD = 90° ⇒ B

CG = GD ⇒ C

Step-by-step explanation:

If line m is the perpendicular bisector of line AB and intersect it at point D

  • D is the mid-point of AB
  • The angles around point D are right angles (the measure of each one 90°)

Let us use these facts to solve our question

Look at the given figure

∵ Line AB is the perpendicular bisector of line CD

∵ Line AB intersects line CD at point G

∴ G is the midpoint of CD

→ That means the point G divides the line CD into two equal parts

   CG and GD

∴ CG = GD

∵ AB ⊥ CD at G

∴ ∠AGD and ∠AGC are right angles

→ the measure of the right angle is 90°

∴ m∠AGD = m∠AGC = 90°

The two pieces of information are needed to prove that line AB is a perpendicular bisector of line CD are:

m∠AGD = 90° ⇒ B

CG = GD ⇒ C

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Add both sides.
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Now divide both sides by 5 and you get 12=x Hope this helps!





8 0
4 years ago
The graph of <img src="https://tex.z-dn.net/?f=y%20%3D%20ax%5E2%20%2B%20bx%20%2B%20c" id="TexFormula1" title="y = ax^2 + bx + c"
Reptile [31]

Answer:

(-b/2a, b^2/(4*a) - b^2/2a + c)

Step-by-step explanation:

For a general parabola:

y = a*x^2 + b*x + c

We can write the vertex as:

(h, k)

The x-value of the vertex is the value of the axis of symmetry.

Then we have:

h = x = -b/2a

Now we need to find the y-value of the vertex.

To do that, we just replace the variable "x" by the x-value of the vertex in our equation, so we get:

k = y = a*(-b/2a)^2 + b*(-b/2a) + c

k = b^2/(4*a) - b^2/2a + c

Then the coordinates of the vertex are:

(h, k) = (-b/2a, b^2/(4*a) - b^2/2a + c)

8 0
3 years ago
A piece of thread is 52,000 nanometers thick. How many meters thick is the
siniylev [52]

Answer:

0.000052

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.000000001 x 52000 = 0.000052

5 0
3 years ago
Forth time I had to ask this!!
lubasha [3.4K]
A.) Yes you can, the expression would be (2.95 x Y) + 4 = X
B.) (2.95 x 24) + 4 = $74.80
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7 0
3 years ago
Which expression gives the best estimate of 45 percent of 76?
jonny [76]

Answer:

<h2>1/2 of 80</h2>

Step-by-step explanation:

45% is close to 1/2 (50%) and 76 is close to 80, so 1/2 of 80 is the best answer.

1/2 of 80 is 40

45% of 76 is 76 x 0.45 is 34.2

6 0
3 years ago
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