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antoniya [11.8K]
3 years ago
7

Help me please ill give points and stuff

Mathematics
1 answer:
zheka24 [161]3 years ago
3 0

Answer:

The third one I have a formula sheet

Step-by-step explanation:

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Veronika [31]

Answer:

3.65 through 3.74

Step-by-step explanation:

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3 years ago
Find the surface area of a regualar pyramid that is a pentagonal pyramid with the area of a base is is 440.4mm and a height of 2
Inessa [10]

Answer:

1240.4 mm²

Step-by-step explanation:

The surface area of a pyramid = Area of the all sides + Area of base

Each side is a triangle.

With a regular pentagonal pyramid, the area of each triangle is

A = \frac{1}{2}\times\text{base}\times\text{slant height}

For the 5 triangles,

A = 5\times\frac{1}{2}\times\text{base}\times\text{slant height} = \frac{1}{2}\times5\times\text{base}\times\text{slant height}

Substituting given values,

A = 5\times\frac{1}{2}\times16\ \text{mm}\times20\ \text{mm} = 800 \text{mm}^2

Area of base = 440.4 mm²

Surface area of a pyramid = 800 + 440.4 mm² = 1240.4 mm²

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3 years ago
The moon has a shape of what geometric solid?
Alex777 [14]
<em>The moon is a sphere.</em><span><span><em> </em>
</span><span>
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3 0
3 years ago
Jenna flips to pennies 105 times how many times can she expect both coins to come up heads
seropon [69]
53 because there is only 2 sides of a penny so 105 divided by 2 is 52.5 
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3 years ago
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Write the equation of the line, in slope-intercept form, with the following information: slope: 1/3 y-intercept: (0, 2)​
sp2606 [1]

Answer:

y=1/3x+2

Step-by-step explanation:

to put it in y=mx+b slope is m and b is the y intercept

6 0
3 years ago
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