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3 years ago

The difference between two numbers is 7194. If the subtrahend is 12,806, find the minuend.

Mathematics

1 answer:

valentina_108 [34]3 years ago

3 0

<u>Answer:</u> The minuend is 20000

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

To calculate the minuend, we use the equation:

$\text{Subtrahend}=\text{Minuend-Difference}$

We are given:

Difference between the two numbers = 7194

Subtraend = 12806

Putting values in above equation, we get:

$\text{Minuend}=12806+7194\\\\\text{Minuend}=20000$

Hence, the minuend is 20000

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Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t

olga55 [171]

Answer:

623

Step-by-step explanation:

Given that margin of error (E) = 3 unit, standard deviation (σ) = 29, sample size (n) = ?

a) The confidence (C) = 99% = 0.99

α = 1 - C = 1 - 0.99 = 0.01

α/2 = 0.01 / 2 = 0.005

From the normal distribution table, The z score of α/2 (0.005) is the critical value and it corresponds to the z score 0.495 (0.5 - 0.005) which is 2.58.

$critical\ value = z_{\frac{\alpha}{2} }=z_{0.005}=2.58\\$

b) The margin of error (E) is given as:

<h3> $E=z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }\\\\\sqrt{n}= z_{\frac{\alpha}{2} }*\frac{\sigma}{E }\\ \\n=( z_{\frac{\alpha}{2} }*\frac{\sigma}{E })^2\\\\Substituting:\\\\n=(2.58*\frac{29}{3} )^2=622.0036\\\\\\n=623(to\ the \ next\ whole\ number)$ </h3>

The minimum sample size (n) is 623

3 0

4 years ago

14 divided by 2/7 =? express your answer in the simplest form

Bogdan [553]

14 / (2/7)...when dividing with fractions, flip what u r dividing by, then multiply

14 * 7/2 =
98/2 =
49 <==

6 0

3 years ago

A department store is having a holiday sale. Mr. Smith bought a couch

Snezhnost [94]

Answer:

Step-by-step explanation:

500×30=15000

3 0

3 years ago

Please help. will mark brainliest

jeka94

2x/2 = 0/2

x = 0

2x/2 = 54/2

x = 27

0 < x < 27

C. 0 < x < 27

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3 years ago

The angles of a quadinlateral are in the<br> ratio 2:3:6:7 find the largest angle

ANEK [815]

Answer:

140°

Step-by-step explanation:

Let the angles be 2x,3x,6x and 7x

Now,

sum of all angles of a quadrilateral=360°

2x+3x+6x+7x =360°

18x=360°

x=360°/18

x=20

Then,

2x=2×20=40

3x=3×20=60

6x=6×20=120

7x=7×20=140

Hence,the largest angle is 140°

8 0

3 years ago