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torisob [31]
3 years ago
10

3. 17 = z -(-9) What’s the answer

Mathematics
1 answer:
kykrilka [37]3 years ago
4 0
<h2>Answer:</h2>

<u><em>  17 + z -(-9)</em></u>

<u><em>+17        +17</em></u>

<u><em>(34)   +   (26)</em></u>

<u><em>       z=60</em></u>

<h2>Step-by-step explanation:</h2>

<em><u>You need to solve for Z so we need to get z by itself so take 17 and add it to both sides because whatever is on the left side of the equal sign is always what you need to add  17+ 17 then 17+(-9) you get your answers then add those two up then you get z=60.</u></em>

<u><em>Thank you for asking this great question need any other help please let me know by commenting below I'd be glad to help. </em></u>

<u><em>I'd also greatly appreciate you if you mark me as brainliest and click that thanks button.( optional )</em></u>

<u><em>Your brainly friend ( lauralit1 )</em></u>

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An airline finds that 5% of the persons making reservations on a certain flight will not show up for the flight. If the airline
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Answer:

The answer to the question is;

The probability that a seat will be available for every person holding a reservation and planning to fly is 0.63307.

Step-by-step explanation:

Let the sample size =n = 100

The success probability = 5 % = 0.05

Number of tickets sold = 105 tickets

In the case where there the airline has found that 5 % will not show up, then every passenger should have  a seat, we have  

A Binomial distribution is appropriate where there is a chance for a certain number of successful outcomes from a number of independent trails

However n·p and n·q must be ≥ 5 for there to be a normal approximation of a Binomial distribution thus

n·p = 105×0.05 =  5.25 ≥ 5

and n·q = n(1 - p) = 105 (1 - 0.05) = 99.75 ≥ 5

As the requirements are met, we can proceed with the approximation of the Binomial distribution by the normal distribution

 z = \frac{x-np}{\sqrt{np(1-p)}  } = \frac{4.5 - 105*0.05}{\sqrt{105*0.05(1-0.05)} } =  - 0.3358

We therefore have P(x ≥ 5) = P( x > 4.5) = P(z > -0.34) = 1 - P(z < -0.34) = 1 -0.36693 = 0.63307

Another way to solve the question is as follows

p = 0.95 q = 0.05

μ = np = 0.95*105 = 99.75, σ = \sqrt{npq} = 2.233

P (x≤100) = P(z = P(z<0.34) = 0.63307.

6 0
3 years ago
Someone please help me with this question
Vladimir79 [104]
A will be the right answer
3 0
3 years ago
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Mr eliot is extremely careful with his money. He recently invested part of his $150,000 life savings in gold bullion and the res
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Answer:

The amount invested in gold bullion by Mr. Eliot  =   $50,000

Step-by-step explanation:

Total amount of savings Me. Eliot ha s = $150,000

Let us assume the amount invested in gold bullion = $m

So, the amount invested in bank = $150,000 - m

Now, 5% on m = \frac{5}{100}  \times m = 0.05 m

So, the profit in gold bullion  =  0.05 m

and 3% on (150,000 -m)   = \frac{3}{100}  \times  (150,000 -m) = 0.03  (150,000 -m)

= 4,500 - 0.03 m

So, the profit in bank =  4,500 - 0.03 m

Now,  the total profit  = $5,500

⇒Profit from gold bullion + ban = $5,500

⇒0.05 m +  4,500 - 0.03 m = $5,500

or, 0.02 m = 1000

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3 0
3 years ago
Calculate the area of a square with sides of 5 inches.
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Answer:

A = 25 in²

General Formulas and Concepts:

<u>Pre-Algebra</u>

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<u>Geometry</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

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<u>Step 2: Solve for </u><em><u>A</u></em>

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Combine like terms: 22 + -4 = 18

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x = -18

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x = -18

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