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natali 33 [55]
2 years ago
15

2.1 Construct an independent Equilateral triangle as follows: 10 cm side with vertices ABC.

Mathematics
1 answer:
Masteriza [31]2 years ago
6 0

Step-by-step explanation:

First draw a straight line

then mark a point A on the line

after take the compass and take 10 cm size

then keep the compass on A and draw the arc its B

then keep the point on B and draw arc to A

next keep the compass on A draw arc on same length

to upside to line do same thing from point B to upside

mark a point meeting borth arcs its c

all ABC triangle

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Find the area of the parallelogram that has a base of 2 1/2 feet and a height of 1 1/4 feet
blagie [28]

Answer:

3 1/8 ft²

Step-by-step explanation:

The area of a parallelogram is equal to the product of its base and its height.

b × h

2.5 × 1.25

= 3.125

The area is 3.125 feet².

4 0
4 years ago
Find the range, mean, and standard deviation of the data set (3, 6, 9, 11, 15, 16) The range is 13 (Type a whole number.) The me
iris [78.8K]

Answer: The range is 13.  The mean is 10. The standard deviation is 4.62 .

Step-by-step explanation:

The given data : 3, 6, 9, 11, 15, 16

Total number of data values : n = 6

The mean of data is given by :-

\overline{x}=\dfrac{\sum^6_{i=1}x_i}{n}\\\\\Rightarrow\overline{x}=\dfrac{60}{6}=10

The standard deviation is given by :-

\sqrt{\dfrac{1}{n}(\sum^6_{i=1}(x_i-\overline{x})^2)}\\\\=\sqrt{\dfrac{1}{6}(\sum^6_{i=1}(x_i-10)^2)}\\\\=\sqrt{\dfrac{1}{6}\times(49+16+1+1+25+36)}=4.61880215352\approx4.62

The range of the data : Maximum value -Minimum value

=16-3=13

6 0
3 years ago
Please answer the image below
nikklg [1K]

Answer:

<h2>301.593</h2><h2 />

Step-by-step explanation:

surface area = 2πrh + 2πr²

where r = 4 km radius

           h = 8 km

<u>plugin values into the formula</u>

surface area = 2πrh + 2πr²

                     = 2π (4) 8  +  2π (4)²

                     = 201.062  +  100.531

                     = 301.593 km²

7 0
3 years ago
James has a 6-ft board that is 24 in. wide. He wants to cut it into five pieces to make a small bookshelf with two shelves. The
Elodia [21]

Answer:

width=x, length = y

(in ft)

3x + 2y = 6y>x

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1ft = 12 in 1.5ft = 18in

3 0
2 years ago
Yall someone help I still have a bunch if other test and I'm so tired ;-;
g100num [7]

Me das mas información?

6 0
3 years ago
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