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2 years ago

Find the value of X around the lengths of the nearest unit

Mathematics

1 answer:

Varvara68 [4.7K]2 years ago

3 0

Answer: 35 ft

Step-by-step explanation:

Given

Vertical height from the eyes of the person to the top of the flag is $X-5$

Horizontal distance is $30\ ft$

The angle of elevation is $45^{\circ}$

From the figure, we can write

$\Rightarrow \tan 45^{\circ}=\dfrac{X-5}{30}\\\Rightarrow 1=\dfrac{X-5}{30}\\\\\Rightarrow X-5=30\\\\\Rightarrow X=35\ ft$

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Dont say random stuff for points please

Vsevolod [243]

Answer:

I Think the answer is A

Step-by-step explanation:

Best guess, sorry. but i think you will get this right.

8 0

3 years ago

Read 2 more answers

The random variable X~(30,2^2) Find p(X<33) Find p(X>26)

Ostrovityanka [42]

Answer:

i) P(X<33) = 0.9232

ii) P(X>26) = 0.001

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 30

Given that the standard deviation of the Population = 4

Let 'X' be the Normal distribution

Step(ii):-

Given that the random variable X = 33

$Z = \frac{x-mean}{S.D}$

$Z = \frac{33-30}{2} = 1.5$ >0

P(X<33) = P( Z<1.5)

= 1- P(Z>1.5)

= 1 - ( 0.5 - A(1.5))

= 0.5 + 0.4232

P(X<33) = 0.9232

Step(iii) :-

Given that the random variable X = 26

$Z = \frac{x-mean}{S.D}$

$Z = \frac{33-26}{2} = 3.5$ >0

P(X>26) = P( Z>3.5)

= 0.5 - A(3.5)

= 0.5 - 0.4990

= 0.001

P(X>26) = 0.001

5 0

2 years ago

Dogs are inbred for such desirable characteristics as blue eye color, but an unfortunate by-product of such inbreeding can be th

sesenic [268]

Answer:

The probability that the dogs are blue eyed and deaf is 13.02%.

Step-by-step explanation:

We are given the following information in the question:

P(Blue eyes) = 31%

P(Deaf) = 38%

P(Deaf | Blue eyes) = 42%

Formula for conditional probability:

$P( A|B) = \displaystyle\frac{P(A \cap B)}{P(B)}$

Now, let A be the event where the dog is deaf and B be the the event where dog is blue eyed.

$P( \text{ Deaf}|\text{Blue eyes}) = \displaystyle\frac{P( \text{Deaf} \cap \text{Blue eyes})}{P(\text{Blue eyes})}\\\\0.42 = \displaystyle\frac{P( \text{Deaf} \cap \text{Blue eyes})}{0.31}\\\\P( \text{Deaf} \cap \text{Blue eyes}) = 0.42\times 0.31 = 0.1302 = 13.02\%$

Hence, the probability that the dogs are blue eyed and deaf is 13.02%.

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3 years ago

What type of function does this equation represent? 2 Y = 4 (1)

Sphinxa [80]

Answer:

2y=4 is a linear function

Step-by-step explanation:

Since 2y=4 is the same as 2y¹=4, then a degree of 1 makes the function linear, aka. a straight line.

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2 years ago

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Mademuasel [1]

Answer:

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Step-by-step explanation:

Multiply:

(x + 4) (2x² +3x - 4)

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Combine like terms:

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3 years ago