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iren2701 [21]
1 year ago
7

In parallelogram ABCD , BE=7x−2 and ED=x2−10 .

Mathematics
1 answer:
Stells [14]1 year ago
5 0

I'm assuming that the diagonals intersect at E. Since diagonals of a parallelogram bisect each other, BE=ED.

  • 7x-2=x²-10
  • x²-7x-8=0
  • (x-8)(x+1)=0
  • x = -1, 8

As distance must be positive, we reject the negative case, so x=8.

Thus, BE=ED=54.

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Answer:

a) s= 9.74

D. 9.74

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Step-by-step explanation:

Part a

We have the following dataset given:

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We can begin calculating the sample mean with the following formula:

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Part b

For this case we need to sort the value on increasing way:

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And the median would be the value in the position 13 and we got:

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3 years ago
The diagonal of a rectangle is of length a. It splits each corner forming two angles with a ratio of 1:2. The area of the rectan
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Answer:

Step-by-step explanation:

Given

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