When a national sample of heights of kindergarten children was? taken, a student was told that he was in the 20th percentile.

Mathematics

1 answer:

Nutka1998 [239]3 years ago

6 0

Answer:

this question doesnt make sense as its like half of it

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Approximate the value of positive square root 5 to the nearest hundredth

Mila [183]

Answer:

2.2

Step-by-step explanation:

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3 years ago

A model of a plane is made using a scale of 1:5. If the wings of the model are 1.2m long, what is the actual length of the wings

7nadin3 [17]

Answer:

6 m

Step-by-step explanation:

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3 years ago

21. Rotating Wheels The rotation of the smaller

polet [3.4K]

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Step-by-step explanation:

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2 years ago

7. A wall of length 10 m was to be built across an open

Ivan

Step-by-step explanation:

$no \: of \: bricks = \frac{volume \: of \: wall}{volume \: of \: one \: brick} \\ \\ = \frac{10 \: m \times 4 \: m \times 24 \: cm}{24 \: cm \times 12 \: cm \times 8 \: cm} \\ \\ = \frac{1000 \: cm\times 400 \: cm \times 24 \: cm}{24 \: cm \times 12 \: cm \times 8 \: cm} \\ \\ = \frac{1000 \: cm\times 400 \: cm }{ 12 \: cm \times 8 \: cm} \\ \\ = \frac{400000}{96} \\ \\ = 4166.67 \\ \\ \approx \: 4167$

Hence, approximately 4167 bricks would be required to built the wall of given dimensions.

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3 years ago