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Alex17521 [72]
3 years ago
12

Which is the net of this solid? A pentagonal pyramid is shown. A net is shown with a square in the middle and 4 identical triang

les on the 4 sides of the square. A net is shown with a pentagon in the middle and 5 identical triangles on the 5 sides of the pentagon. A net is shown with a triangle in the middle and 3 identical triangles on the 3 sides of the triangle in the middle. A net is shown with a hexagon in the middle and 6 identical triangles on the 6 sides of the hexagon.
Mathematics
1 answer:
Neko [114]3 years ago
4 0

Answer: Choice B

A net is shown with a pentagon in the middle and 5 identical triangles on the 5 sides of the pentagon

The pentagon forms the base of the pentagonal pyramid. Each lateral side is a triangle that meets at the very top of the pyramid. The base stays on the floor while the sides are folded up.

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

There are other possible net configurations to form a pentagonal pyramid, but the other answer choices do not make a pentagonal pyramid.

  • Choice A produces a square pyramid.
  • Choice C makes a triangular pyramid (aka tetrahedron).
  • Choice D makes a hexagonal pyramid.

So we can rule choices A, C and D out.

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What is 24.84 in simplest radical form​
Bogdan [553]

Answer:

5 than square root over 10

Step-by-step explanation:

because when you write it out you recive this answer

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2 years ago
Identify each number as rational or irrational.
emmasim [6.3K]

Answer:

1. Rational

2. Irrational

3. Irrational

4. Rational

5. Irrational

Step-by-step explanation:

Rational numbers are numbers you can identify as the ratio of two integers. Which means they don't go on forever. 1 and 4 are both rational numbers while 2, 3, and 5 are irrational.

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2 years ago
Three numbers have a mean of 64. When a fourth number is included the mean is doubled. What is the fourth number?
astra-53 [7]
The mean is calculated by adding up all of the given numbers and dividing by the number of numbers.

Lets, for ease of understanding, say that the first three number were 64...

Mean=(64+64+64)/3=192/3=64

Now, lets solve for the mean where 'x' is the unknown fourth number and 128 is the mean. (since, the answer said that when the fourth number was added the mean, 64, was doubled '64*2=128')

128=(64+64+64+x)/4
128=(192+x)/4
Multiply both sides by 4
512=192+x
subtract 192 from both sides
320=x

The missing number is 320..


Now lets double check our work.

Mean=(64+64+64+320)/4=512/4=128

Answer=320
8 0
3 years ago
Read 2 more answers
Please help work this out
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Answer:

Area=190.091 cm^2

Step-by-step explanation:

Area = 1/2(Pi x r^2)    one-half because it's a semi-circle

Area=1/2(3.14 x 11^2)

11^2=121 so, Area=1/2(3.14 x 121)

Area=1/2(379.94)

Area=189.97 cm^2

adjustment:

Area=1/2(3.142 x 11^2)

Area=1/2(3.142 x 121)

Area=1/2(380.182)

Area=190.091

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