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3 years ago

Simplify:2a-2/3b-41/2a- 1/6b

Mathematics

1 answer:

Semenov [28]3 years ago

4 0

12a^2b-ab^2-4a-123b/ 6ab

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kicyunya [14]

Answer:

No :)

Step-by-step explanation:

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3 years ago

Find The Area Of This Shape

spin [16.1K]

14 because you count the height and how much the base is from the farthest point left to right and multiply h=2 b=7 therefor 2x7 is 14

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3 years ago

How do you turn 59 less than x is 49 into an equation. I feel like I should know this.

Alexxandr [17]

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3 years ago

An Airliner has a capacity for 300 passengers. If the company overbook a flight with 320 passengers, What is the probability tha

TEA [102]

Answer:

The probability is $P(X >300 ) = 0.97219$

Step-by-step explanation:

From the question we are told that

The capacity of an Airliner is k = 300 passengers

The sample size n = 320 passengers

The probability the a randomly selected passenger shows up on to the airport

$p = 0.96$

Generally the mean is mathematically represented as

$\mu = n* p$

=> $\mu = 320 * 0.96$

=> $\mu = 307.2$

Generally the standard deviation is

$\sigma = \sqrt{n * p * (1 -p ) }$

=> $\sigma = \sqrt{320 * 0.96 * (1 -0.96 ) }$

=> $\sigma =3.50$

Applying Normal approximation of binomial distribution

Generally the probability that there will not be enough seats to accommodate all passengers is mathematically represented as

$P(X > k ) = P( \frac{ X -\mu }{\sigma } > \frac{k - \mu}{\sigma } )$

Here $\frac{ X -\mu }{\sigma } =Z (The \ standardized \ value \ of \ X )$

=> $P(X >300 ) = P(Z > \frac{300 - 307.2}{3.50} )$

Now applying continuity correction we have

$P(X >300 ) = P(Z > \frac{[300+0.5] - 307.2}{3.50} )$

=> $P(X >300 ) = P(Z > \frac{[300.5] - 307.2}{3.50} )$

=> $P(X >300 ) = P(Z > -1.914 )$

From the z-table

$P(Z > -1.914 ) = 0.97219$

$P(X >300 ) = 0.97219$

8 0

3 years ago

Find the area of the regular polygon. Round to the nearest tenth if<br> necessary.<br> 7.5<br> 5.1

zalisa [80]

Answer:

that will be 25 if you put 30 in the thing

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3 years ago