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2 years ago

Find the mean proportional for each pair. SHOW YOUR SOLUTION 1. 6, 24

Mathematics

1 answer:

Bingel [31]2 years ago

5 0

Answer:

The mean proportional of 6, and 24 will be 12

Step-by-step explanation:

We know that the Mean proportional of two

numbers, x, and y : $\sqrt{xy}$

Therefore, the mean proportional of 6, and 24

$=\sqrt{6\times 24}$

$=\sqrt{144}$

$\mathrm{Factor\:the\:number:\:}\:144=12^2$

$=\sqrt{12^2}$

$\mathrm{Apply\:radical\:rule}:\quad \sqrt[n]{a^n}=a$

$\sqrt{12^2}=12$

$=12$

Therefore, the mean proportional of 6, and 24 will be 12.

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Factored form of 2x*2+13x+20

cricket20 [7]

Answer:

(2x+5)(x+4)

Step-by-step explanation:

After factoring we can find that it equals

(2x+5)(x+4)

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3 years ago

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-9=k-6

Shkiper50 [21]

Answer:

k = -3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
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Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define

-9 = k - 6

Step 2: Solve for k

Add 6 to both sides: -3 = k
Rewrite: k = -3

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3 years ago

4. In a sample of 1000 people, 130 can wiggle their ears. Two unrelated people are

Elina [12.6K]

Using the hypergeometric distribution, it is found that there is a 0.7568 = 75.68% probability that neither can wiggle his or her ears.

The people are chosen from the sample without replacement, which is why the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.
N is the size of the population.
n is the size of the sample.
k is the total number of desired outcomes.

In this problem:

1000 people means that $N = 1000$
130 can wiggle their ears, thus $k = 130$
Two are selected, thus $n = 2$ .

The probability that neither can wiggle his or her ears is P(X = 0), thus:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}$

$P(X = x) = h(0,1000,2,130) = \frac{C_{130,0}C_{870,2}}{C_{1000,2}} = 0.7568$

0.7568 = 75.68% probability that neither can wiggle his or her ears.

A similar problem is given at brainly.com/question/24826394

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2 years ago

If f(x) = 1 – X, which value is equivalent to f0]?

Illusion [34]

Answer:

Step-by-step explanation:

0=1-x

-1= -x

divide both sides by -1

x=1

8 0

3 years ago

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When a graphed line is vertical, it indicates that the relation is ?

GuDViN [60]

Answer:When a vertical line is placed across the plot of this relation, it intersects the graph more than once for some values of x. If a graph shows two or more intersections with a vertical line, then an input (x-coordinate) can have more than one output (y-coordinate), and y is not a function of x.

Step-by-step explanation:

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3 years ago