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Ksivusya [100]
3 years ago
10

I don't understand this

Mathematics
2 answers:
gulaghasi [49]3 years ago
8 0

Step-by-step explanation:

Find volume of pyramid

Formula for volume of pyramid

= (height * length * width) ÷ 3

Height = 4mm

B (base = area = length x width) =15mm^2

Volume = (4mm * 15mm^2) ÷ 3

= 60 ÷ 3

= 20 mm^3

Yanka [14]3 years ago
6 0

Answer:

Step-by-step explanation:

20mm^3

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75 S is the answer :)
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3 years ago
Simplify and Evaluate
zalisa [80]
\dfrac{2^{-1} + 5^{-1}}{10^{-1} - 5^{-2}} =

= \dfrac{\frac{1}{2} + \frac{1}{5}}{\frac{1}{10} - \frac{1}{5^2}}

=\dfrac{\frac{1}{2} + \frac{1}{5}}{\frac{1}{10} - \frac{1}{25}}

=\dfrac{\frac{5}{10} + \frac{2}{10}}{\frac{5}{50} - \frac{2}{50}}

=\dfrac{\frac{7}{10}}{\frac{3}{50}}

= \frac{7}{10} \times \frac{50}{3}

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4 0
3 years ago
A line that crosses segment at right angles while dividing the segment in half is called
iren [92.7K]

The correct answer is:

A line that crosses segment at right angles while dividing the segment in half is called <u>a perpendicular bisector</u>

Step-by-step explanation:

A bisector is a line that divides a line segment in two equal parts. A perpendicular bisector is a line that is perpendicular to given line segment and passes through the mid-point of the line segment. It can also be said as that the line perpendicular to a line segment that divides the lines in half is called the perpendicular bisector.

The correct answer is:

A line that crosses segment at right angles while dividing the segment in half is called <u>a perpendicular bisector</u>

Keywords: Perpendicular, bisector

Learn more about geometry at:

  • brainly.com/question/2115122
  • brainly.com/question/2116906

#LearnwithBrainly

8 0
2 years ago
FASTTT B4 MY TEACHER THINKS IM AN IDIOT
spin [16.1K]
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a= 1/2 b x h
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3 years ago
1.A five - layer of cake weighs half a kilogram per layer.In each layer,the cake is decorated with icing which weighs 15g.3 cand
julia-pushkina [17]

Answer:  2.815 kilograms

======================================================

Work Shown:

1 layer = 0.5 kg

5 layers = 5*(0.5 kg) = 2.5 kg

icing = 15 g = 15/1000 = 0.015 kg

1 candle = 100 g = 100/1000 = 0.1 kg

3 candles = 3*(0.1 kg) = 0.3 kg

------------------------

The five layers combine to 2.5 kg. On top of that we have 0.015 kg of icing, and then finally the three candles add 0.3 kg more weight.

The total weight is therefore: 2.5+0.015+0.3 = 2.815 kilograms

3 0
3 years ago
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