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2 years ago

What is the volume of a square based pyramid with a side 11 cm and a perpendicular height of 20 cm

Mathematics

1 answer:

Kaylis [27]2 years ago

3 0

V=lw*h/3

So since its a square l and w are the same

11*11 = 121

h=20

20/3= 6.6666666

V=121*6.6666666

V= 806.66667

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Reil [10]

10/4, 4:10 and, 10 to 4.
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2 years ago

How much does a 5 lb 11 oz roast weigh in grams?

Maurinko [17]

Answer:

2268 grams or 2 kg 268 g

Step-by-step explanation:

<u>How to convert Pounds to Grams</u>

1 pound (lb) is equal to 453.59237 grams (g).

1 lb = 453.59237 g

The mass m in grams (g) is equal to the mass m in pounds (lb) times 453.59237:

m(g) = m(lb) × 453.59237

In this case,

Convert 5 lb to grams:

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5 0

3 years ago

Read 2 more answers

One sample has Aa Aa One sample has n 10 scores and a variance of s2 20, and a second sample has n 15 scores and a variance of s

siniylev [52]

Answer:

option (a) It will be closer to 30 than to 20

Step-by-step explanation:

Data provided in the question:

For sample 1:

n₁ = 10

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For sample 2:

n₂ = 15

variance, s₂² = 30

Now,

The pooled variance is calculated using the formula,

$S^{2}_{p} = \frac{(n_{1}-1)\times s^{2}_{1} +(n_{2}-1)\times s^{2}_{2}}{n_{1}+n_{2}-2}$

on substituting the given respective values, we get

$S^{2}_{p} = \frac{(10-1)\times 20 +(15-1)\times 30}{10+15-2}$

$S^{2}_{p}$ = 26.0869

Hence,

the pooled variance will be closer to 30 than to 20

Therefore,

The correct answer is option (a) It will be closer to 30 than to 20

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2 years ago

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3 years ago

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valentina_108 [34]

Answer:

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Step-by-step explanation:

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2 years ago

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