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Serga [27]
3 years ago
13

Let x and y be random variables of the continuous type having the joint p.d.f. f(x,y)=8xy

Mathematics
1 answer:
Nana76 [90]3 years ago
7 0
Part (d): use two different arguments
to evaluate whether X and Y are independent.
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What radius of a circle is required to inscribe a regular hexagon with an area of 210.44 cm2 and an apothem of 7.794 cm
alekssr [168]
We know that

[area of a regular hexagon]=6*[area of one <span>equilateral triangle]
</span>210.44=6*[area of one equilateral triangle]
[area of one equilateral triangle]=210.44/6-----> 35.07 cm²

[area of one equilateral triangle]=b*h/2
h=7.794 cm
b=2*area/h------> b=2*35.07/7.794------>b= 9 cm

the length side of a regular hexagon is 9 cm
<span>applying the Pythagorean theorem
</span>r²=h²+(b/2)²------>r²=7.794²+(4.5)²------> r²=81--------> r=9 cm

<span>this last step was not necessary because the radius is equal to the hexagon side------> (remember the equilateral triangles)
</span>
the answer is
the radius is 9 cm
8 0
3 years ago
How many times 19 go into 36
Aneli [31]
36/19
=1.894736842 and it keeps going

Hope this helped and have a great day!
5 0
3 years ago
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Does the equation y=-1/3x1/3 form a straight line
weqwewe [10]
Yes because it is a linear equation 
7 0
3 years ago
Find the value of x to the nearest tenth
Salsk061 [2.6K]

Answer:

x = 41.2

Step-by-step explanation:

Assuming the dotted line at the top is parallel to the segment with length x, it follows from the alternate interior angles theorem that the interior angle of the triangle (marked in diagram) is also 27º.

Using SOH-CAH-TOA, we get that tan(27º) = 21/x, so x = 21/tan(27º), which is approximately equal to 41.2.

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Given the following number as an approximate measurement, 49.5 feet. What is the range of values for the actual value?
Elodia [21]

Answer:

range is 2

Step-by-step explanation:

4 0
3 years ago
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