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3 years ago

Rosa has $175 in her online music account. Each month she buys $15 worth of new songs. Which inequality could be solved

Mathematics

1 answer:

Virty [35]3 years ago

6 0

Answer:

it is C)15x - 175 < 10

Step-by-step explanation:

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Find the value of x in each of the following

skelet666 [1.2K]

A) 2x-7=13
2x=20
x=10

B) 3x+4=25
3x=21
x=7

6 0

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

N a triangle, the measure of the first angle is twicetwice the measure of the second angle. the measure of the third angle is 6

11111nata11111 [884]

2x+x+x+68=180
4x=112
x=28

Angle 1: 56 degrees
Angle 2: 28 degrees
Angle 3: 96 degrees

I hope that helps.

6 0

3 years ago

Is the answer -5r + 5

nadya68 [22]

-5(r-1)
Do you need step by step

6 0

3 years ago

HELPPPPPPPPPP- pleaseeee T^T

Luba_88 [7]

Answer:

Step-by-step explanation:

8 0

3 years ago

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