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sweet-ann [11.9K]
2 years ago
10

Based on the given information, determine which sides of quadrilateral ABCD must be parallel.

Mathematics
1 answer:
a_sh-v [17]2 years ago
8 0

Answer: The answer is A


Step-by-step explanation:I say that because if you think about it, the two 72 degree angles and 108 angles are the same to each other. Make a parallelogram and label A B C D along with the numbers for each and you'll see that line AB is parallel to line DC. Kind of a common sense question I guess. Hope this helps!

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Decompose to find the product of 8 × 4.52.
RideAnS [48]

Answer:

8 × 4.52 = 36.16

Step-by-step explanation:

We have given expression:

8 × 4.52

We have to find the product of expression.

8 × 4.52

8 × 4.52 = 36.16

36.16 is the product of the given expression.

We completed our question.

4 0
3 years ago
A statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20. Use thi
rjkz [21]

Answer:

\mu = 14.5\\

\sigma = 5.071\\

k = 1.084

Step-by-step explanation:

given that a  statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20.

i.e. his findings with respect to probability are

P(9

Recall Chebyshev's inequality that

P(|X-\mu |\geq k\sigma )\leq {\frac {1}{k^{2}}}\\P(|X-\mu |\leq k\sigma )\geq 1-{\frac {1}{k^{2}}}\\

Comparing with the Ii equation which is appropriate here we find that

\mu =14.5

Next what we find is

k\sigma = 5.5\\1-\frac{1}{k^2} =0.15\\\frac{1}{k^2}=0.85\\k=1.084\\1.084 (\sigma) = 5.5\\\sigma = 5.071

Thus from the given information we find that

\mu = 14.5\\\sigma = 5.071\\k = 1.084

5 0
3 years ago
A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal? 31 units 39 units 41 units 49 uni
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Answer:

41

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