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Anuta_ua [19.1K]
3 years ago
12

Given two equilateral triangle; the length of the sides of the 2nd triangle are 2 less than 3

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
6 0

9514 1404 393

Answer:

  first triangle -- side: 304.8 mm; perimeter: 914.4 mm

  second triangle -- side: 863.6 mm; perimeter: 2590.8 mm

Step-by-step explanation:

We are given two equilateral triangles. The perimeter of the second is given as 102 inches, so its sides have length 102/3 = 34 inches. This is 2 less than 3 times the side length in the first triangle. So, adding 2 will give 3 times the side length of the first triangle: 36 inches, which also happens to be its perimeter. Those side lengths are 36/3 = 12 inches.

Now, we know:

  first triangle -- side length 12 inches, perimeter 36 inches

  second triangle -- side length 34 inches, perimeter 102 inches.

These measurements are desired in millimeters. Each inch is 25.4 millimeters, so we can find the desired measures by multiplying these numbers by 25.4.

  12×25.4 = 304.8; 36×25.4 = 914.4

  34×25.4 = 863.6; 102×25.4 = 2590.8

The desired lengths are ...

  first triangle -- side: 304.8 mm; perimeter: 914.4 mm

  second triangle -- side: 863.6 mm; perimeter: 2590.8 mm

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Answer:it is an increase of 92%

Step-by-step explanation:

23-12=11

12x=11

X=11/12

X=.9166666

Move decimal 2 places to the right to make a percent

91.6 or 92%

4 0
3 years ago
4. Compare/contrast the data sets below. Which data set has a range of 9, a mean of
VladimirAG [237]

Let's first find the mode of each data set.

Mode = the largest value - the smallest value.

A. 20 - 11 = 9

B. 31 - 5 = 26

C. 20 - 11 = 9

D. 15 - 6 = 9

B fails because its mode does not equal 9.

Let's find the mean of A, C, and D

The mean = the sum of all data values divided by the number of data values.

A. (11 + 11 + 13 + 15 + 20) / 5 = 14.2

C. (11 + 11 + 14 + 19 + 20) / 5 = 15

D. (6 + 10 + 14 + 15 + 15) / 5 = 12

Options A and D fail because their mean does not equal 15.

Let's find the median and mode of option C

Median = the value which falls into the middle of our data set

11, 11, 14, 19, 20 = 14

Mode = the value which appears most often

In option C, 11 appears twice and every other number appears once, therefore, 11 is the mode.

7 0
3 years ago
9th Grade Geometry<br><br> Describe and correct the error in finding the length of line segment AB
Nookie1986 [14]

The correct option regarding the error in calculating the length of segment AB is given as follows:

There should have been a subtraction instead of an addition, and the correct length is of 3.5 units.

<h3>Where are points A and B?</h3>

Researching the problem on the internet, it is found that points A and B are on a number line, with coordinates given as follows:

  • A: 1.
  • B: 4.5.

<h3>What is the length of the segment?</h3>

The length of the segment is the absolute value of the subtraction of the endpoints, hence:

L = |4.5 - 1| = |1 - 4.5| = 3.5.

The error is that:

There should have been a subtraction instead of an addition, and the correct length is of 3.5 units.

More can be learned about the length of a segment at brainly.com/question/7694028

#SPJ1

4 0
2 years ago
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alina1380 [7]

Answer:

7 miles

Step-by-step explanation:

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3 years ago
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Sholpan [36]
Part A=B
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