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Tema [17]
3 years ago
6

Some people took part in a game. The frequency shows information about their scores.

Mathematics
1 answer:
Wittaler [7]3 years ago
3 0
80
117
169
180
448
817
=
1811 / 91

19.901 and that rounded to 2 decimal places is 19.9
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What is the surface area of the rectangular pyramid
posledela

Answer:

<h2>41.74 m²</h2>

Step-by-step explanation:

We have:

rectangle 4.8 m × 3.8 m

two triangles with base b = 4.8 m and height h = 2.6 m

two triangle with base b = 3.8 m and height h = 2.9 m.

The formula of an area of a rectangle l × w:

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Substitute:

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The formula of an area of a triangle:

A=\dfrac{bh}{2}

Substitute:

A_2=\dfrac{(4.8)(2.6)}{2}=6.24\ m^2\\\\A_3=\dfrac{(3.8)(2.9)}{2}=5.51\ m^2

The Surface Area:

S.A.=A_1+2A_2+2A_3\\\\S.A.=18.24+2(6.24)+2(5.51)=41.74\ m^2

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Which of the following is the expansion of (2x – y) 2?
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