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olchik [2.2K]
3 years ago
14

URGENT!!!

Mathematics
1 answer:
Bumek [7]3 years ago
5 0
We need to prove that <span>the three medians intersect at the same point.
</span>
The 3 medians of a triangle meet at the same point. This point is called the centroid of the triangle
The median is the line that join a vertex of the triangle and the midpoint of the side opposite that vertex.

So, we need to construct the midpoints of all the three sides 
so, it is logic to begin to construct the midpoint of one of the sides.

By configuring the given options, so the correct option is the first
<span>Construct midpoint D on segment AB</span>

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A line passing through (-1 7) and (2, 10)
Inessa05 [86]

Answer:B

Step-by-step explanation:

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RADIO TELESCOPES The cross section of a large radio telescope is a parabola. The equation that describes the cross section is y=
Minchanka [31]

Answer:

I am sorry

Step-by-step explanation:

3 0
3 years ago
PLEASE HELP ME IF YOU CAN! please tell me how you got the answer thank you!
Temka [501]
3sqrt(2)

You can either use Pythagorean theorem or special triangle proportions to find the side that is parallel to z. Since in a 45-45-90 degree triangle, the hypotenuse is the leg times the square root of 2, and the hypotenuse is 3, we know that the leg is 3/sqrt(2) which is equal to 3 sqrt(2) / 2. Since z is twice this length, we know that z is equal to 2 x 3sqrt(2)/2 = 3sqrt(2)
3 0
3 years ago
Corey brought $54.50 to the art supply store. He bought a brush, a sketchbook, and a paint set. The brush was 1 6 as much as the
lord [1]

Answer: The items cost as follows;

(a) Brush = $3.50, (b) Sketchbook = $21 and (c) Paint set = $28

Step-by-step explanation: First of all we shall assign letters to the unknown variables, hence we shall call the brush x, the sketchbook y, and the paint set we shall call z.

The total amount spent by Corey was $52.50 because after buying all he needed, he had $2.00 left out of a total of $54.50. This means his transaction can be expressed as follows;

x + y + z = 52.50

However, we know that the brush was 1/6 as much as the sketchbook, that is, if the sketchbook is y, then the brush which is x shall be 1/6 of y. Simply put, x = 1/6y or x = y/6.

Similarly, the sketchbook cost 3/4 of the paint set. If the paint set is z, that means y = 3/4z or y = 3z/4.

Note however that, if y = 3z/4, then by cross multiplication,

4y = 3z

4y/3 = z

Having derived that x = y/6 and z = 4y/3, we can substitute for the values of x and z into the original equation

x + y + z = 52.50

y/6 + y + 4y/3 = 52.5

using a common denominator which is 6, you now have;

(y + 6y + 8y)/6 = 52.5

By cross multiplication, you now have

15y = 52.5*6

15y = 315

Divide both sides of the equation by 15

y = 21

Therefore, if the sketchbook is y, then the sketchbook costs $21.

Also if the brush is x, then the brush costs

x = y/6

x = 21/6

x = 3.50 (The brush costs $3.50)

Also if the sketchbook costs 3/4 of the paint set, then

y = 3z/4

21 = 3z/4

21*4 = 3z

84 = 3z

Divide both sides of the equation by 3

28 = z (The paint set costs $28)

7 0
3 years ago
Can someone help me plz someone help me plz help me someone as soon as possible plz someone ASAP plz ASAP
MissTica
C and D are your correct answers.
I hope this helps
8 0
3 years ago
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