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3 years ago

5

The base of a regular pyramid is a hexagon.

2 answers:

mina [271]3 years ago

6 0

216 square root 3 cm ^2

I am Lyosha [343]3 years ago

6 0

I just took the test, the correct answer is .. 294√3 cm^2

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What is the product?

kumpel [21]

Answer:

The answer would be the last one

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3 years ago

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In a data distribution, the first quartile, the median and the means are 30.8, 48.5 and 42.0

kolbaska11 [484]

Answer:

$Q_3 = 56.45$ --- The third quartile

$Var = 370.18$ -- Variance

Step-by-step explanation:

Given

$Q_1 = 30.8$ -- First quartile

$Q_2 = 48.5$ --- Median

$\bar x = 42$ --- Mean

$Skp = -0.38$ --- Coefficient of skewness

Solving (9): The third quartile $Q_3$

This is calculated from

$Skp = \frac{Q_1 + Q_3 - 2Q_2}{Q_3 - Q_1}$

So, we have:

$-0.38 = \frac{30.8 + Q_3- 2*48.5}{Q_3 - 30.8}$

Cross Multiply

$-0.38 (Q_3 - 30.8)= 30.8 + Q_3- 2*48.5$

Open bracket

$-0.38Q_3 + 11.704= 30.8 + Q_3- 97.0$

Collect like terms

$-0.38Q_3 -Q_3= 30.8 - 97.0- 11.704$

$-1.38Q_3= -77.904$

Divide both sides -1.38

$Q_3 = \frac{-77.904}{-1.38}$

$Q_3 = 56.45$ --- approximated

Solving (b): The variance

First, calculate the standard deviation from:

$3IQR = 4SD$

$IQR= Q_3 - Q_1$

So:

$3IQR = 4SD$

$3(Q_3 - Q_1) = 4SD$

Make SD the subject

$SD = \frac{3}{4}(Q_3 - Q_1)$

$SD = \frac{3}{4}(56.45 - 30.8)$

$SD = \frac{3}{4}*25.65$

$SD = \frac{3*25.65}{4}$

$SD = \frac{76.95}{4}$

$SD = 19.24$

So, the variance is:

$Var = SD^2$

$Var = 19.24^2$

$Var = 370.18$

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3 years ago

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alexandr1967 [171]

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3 years ago

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Find the quotient. simplify your answer s-4/s / 8/s

lapo4ka [179]

Your input: find the difference quotient for f(s)=s−12s2.

A difference quotient is given by f(s+h)−f(s)h

To find f(s+h), plug s+h instead of s:

f(s+h)=s−12s2

Finally, f(s+h)−f(s)h=(s−12s2)−(s−12s2)h=0

Answer: the difference quotient for f(s)=s−12s2 is 0.

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3 years ago

Find the sum:(x^2+2x+3)+(3x^2+x+1)

Akimi4 [234]

Answer: 4x^2 + 3x + 4
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4 years ago