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sergiy2304 [10]
3 years ago
11

Calcula la altura de un triángulo equilátero de 14 cm de lado

Mathematics
1 answer:
malfutka [58]3 years ago
6 0

Answer:

La altura en todo triangulo equilatero es:

Al =√3/2 * L      L = 14cm

Al = √3 *14cm/2    Simplificando sacando mitad

Al = 7√3

Al = 7 *1,73cm

Al = 12,11cm Aproximadamente.

Respuesta:

El area del triangulo es 49√3cm²  o 84,77cm² Aproximadamente

La altura = 12, 11cm aproximadamente.

Step-by-step explanation:

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Line L is mapped onto the line t by a dilation centered at
STatiana [176]

The equation of line T is 2x - y = 7 ⇒ (6x - 3y = 21)

Step-by-step explanation:

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size

  • If the equation of a  line is ax + by = k is dilated, with center origin and scale factor k, then the equation of the image of the line is kax + kby = kc
  • The line and its image are parallel
  • The coordinates of a general point on the image is (kx , ky)

Line L is mapped onto the line T by a dilation centered at the origin and  a scale factor of 3.

That means lint T is the image of line L after dilation

∵ The equation of line L is 2x - y = 7

∵ Line L is dilated by scale factor 3 and centered at origin

- That means multiply the equation of line L by 3 to find the

   equation of line t

∵ Line T is the image of line L after dilation

∴ The equation of line T is (3)(2x) - (3)(y) = (3)(7)

∴ The equation of line T is 6x - 3y = 21

<em>Very important note:</em>

The equation of line T is the same with equation of line L but multiplied by the scale factor 3 ⇒ L and T are coincide lines (same line)

That means the equation of lines T and L is 2x - y = 7

The equation of line T is 2x - y = 7 ⇒ (6x - 3y = 21)

Learn more:

You can learn more about dilation in brainly.com/question/2480897

#LearnwithBrainly

7 0
3 years ago
Regina receive a score of 39 out of 52 on a quiz. What percentage did she earn?
Verdich [7]

Answer:

78%

Convert fraction (ratio) 39 / 50 Answer: 78%

8 0
3 years ago
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A Chinese restaurant offers buffet takeout for $4.99 per pound. How much does your takeout meal cost?
Degger [83]

Answer:

$7.68

Step-by-step explanation:

4.99/0.65 = $7.68

Hope it helps!

4 0
3 years ago
Please help i'm timed!!!!
MrRissso [65]

Answer:

The second one

Step-by-step explanation:

4 0
3 years ago
Helphelphelphelphelp​
VashaNatasha [74]
<h3>5:16</h3>

The ratio is supposed to be pennies to total amount of coins. The total amount of coins--including pennies--is 16. This can be proven by this equation:

5 + 6 + 5 = 16

Now you put the ratio together by taking the amount of pennies (5) and total amount of coins (16). Your ratio should look like this:

5:16

Hope I helped you out! ❤❤

4 0
3 years ago
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