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klasskru [66]
3 years ago
7

Please Help! Will mark brainliest.!!!!!

Mathematics
2 answers:
olga_2 [115]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Median of triangle: It is a line segment joining a vertex to the midpoint of the opposite side.

Consider ΔABC, point F id the midpoint of line segment AB and E is the midpoint of luine segment AC.

Draw line segments FC and BE(medians of  triangle). G is the point where line segment FC and BE meet. Now, Join AG.

Let H be the point outside the ΔABC and AG passs through the point H  such that AG intersects BC at D. BH and HC are dashed lines.

We need to show that D is the midpoint of BC. The correct logical order for proof will be:

III. GC is parallel to line segment BH and line segment BG is parallel to line segment HC.

IV.  Line segment FG is parallel to line segment BH and line segment GE is parallel to line segment HC.

I. BGCH is a parallelogram as opposite sides are parallel (from III.)

II. Since, diagnols of a parallelogram bisect each other. Henc, we get BD=DC.

Therefore, D is mid pont of BC.

It implies that AD is also a median.

Hence, all the three medians that are: BE,FC and AD passes through a common vertex G.

Ne4ueva [31]3 years ago
3 0

Answer:

A) IV, III, I, II

Step-by-step explanation:

Just took the test and got it right (:

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melomori [17]

Answer:

  (X, Y, Z) = (8, 28, 32)

Step-by-step explanation:

The ratio units will form a geometric sequence if the middle one is the square root of the first and last:

  Y' = √(2·8) = 4

To get this value from 7, we must subtract 3. In the real sequence we must subtract 12, so each "ratio unit" must stand for 12/3 = 4 real units, and the real numbers X, Y, Z are 2·4 = 8, 7·4 = 28, 8·4 = 32.

  (X, Y, Z) = (8, 28, 32)

  (X, Y-12, Z) = (8, 16, 32) . . . . a geometric sequence with a ratio of 2

3 0
4 years ago
the length of a rectangle is 1 cm more than twice it's width. of area of the rectangle is 21 cm^2 then what are the dimensions?
larisa86 [58]
You are given a rectangle and are told that the length is 1 cm more than twice the width of the rectangle.  The area of the rect. is also given, and is 21 cm^2.

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Since the area of a rect. is equal to the product of its length and width, 

x(2x+1)=21 cm^2.  Multiply out x(2x+1).  show your work.  Next, subtract 21 from both sides.  Write your algebraic expression on the left side as a quadratic equation in standard form.

Solve this quadratic equation for x.  Recall that x (in cm) will represent the width of the rect., and y=2x+1 (in cm) will repr. the length.
8 0
3 years ago
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Tresset [83]

Answer:

a) 12x + 20y = 300

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Step-by-step explanation:

You can define your variables however you like. Let x = number of caps and y = number of shirts.

Using the costs given the equation would be

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4 0
3 years ago
Radius of a circle with a circumference of 50.26​
klio [65]

Answer:

16 cm

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