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3 years ago

What is the length of KL if the quadrilateral is a rhrombus

Mathematics

1 answer:

exis [7]3 years ago

8 0

It is given that the quadrilateral is a rhombus . And a rhombus have all sides equal . Therefore , JK = LM

And on substituting the values of JK and LM , we will get

5x = 4x+1

Subtracting 4x from both sides

5x-4x= 4x+1-4x

x =1

So when x=1, JK=LM =5(1)=5

And therefore KL = 5 too . SO the correct option is the second option .

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g 78% of all Millennials drink Starbucks coffee at least once a week. Suppose a random sample of 50 Millennials will be selected

Tatiana [17]

Answer:

We know that n = 50 and p =0.78.

We need to check the conditions in order to use the normal approximation.

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Step-by-step explanation:

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Solution to the problem

We know that n = 50 and p =0.78.

We need to check the conditions in order to use the normal approximation.

$np=50*0.78=39 \geq 10$

$n(1-p)=50*(1-0.78)=11 \geq 10$

Since both conditions are satisfied we can use the normal approximation and the distribution for the proportion is given by:

$p \sim N (p, \sqrt{\frac{p(1-p)}{n}})$

With the following parameters:

$\mu_ p = 0.78$

$\sigma_p = \sqrt{\frac{0.78*(1-0.78)}{50}}= 0.0586$

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3 years ago