2 years ago

rachel has a toy shaped like a triangular pyramid in which the base and the lateral faces are congruent equilateral triangles.

Mathematics

1 answer:

Sonja [21]2 years ago

3 0

Answer:

21 in. squared

Step-by-step explanation:

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That would be the last option

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barxatty [35]

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3 years ago

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2 years ago

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babunello [35]

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3 years ago

Ninety-five percent of students at an elementary school are between 3.6 feet tall and 5.5 feet tall. Assume the height data at t

vazorg [7]

Answer:4.55,0.47

Step-by-step explanation:

Given height varies from 3.6 feet to 5.5 feet for 95% student

i.e.

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$\mu -2\sigma=3.6$ -----------(1)

$\mu +2\sigma=5.5$ -----------(2)

Solving (1)&(2) we get

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3 years ago