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2 years ago

What's geometric mean?

Mathematics

2 answers:

Vlad1618 [11]2 years ago

7 0

Hello,

Given two numbers a and b:

arithmetic mean =(a+b)/2

geometric mean =√(a*b)

harmonic mean :2/ (1/a + 1/b)

Black_prince [1.1K]2 years ago

3 0

<span>It means that it is pertaining to a type of math or in this case Geometry, for the use of its method.

</span>

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Here are the ingredients needed to make 8 pancakes.

jeka57 [31]

Answer:

a) 1000mL Milk

b) 60g Butter

Step-by-step explanation:

a) 250mL*4=1000mL

b) 5g*12=60g

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2 years ago

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For questions 2 z 3. simplify each polynomial <br>2. 3x²+6-2x+5x-4x²+9<br>3. 2x²+6x-7x+8-3x²+1

Mars2501 [29]

Answer:

2. $-x^{2} +3x+15$

3. $-x^{2} -x+9$

Step-by-step explanation:

We add like terms together to simplify

2. 3x²-4x²= -x² -2x+5x= 3x 6+9= 15 all equal to -x²+3x+15

3. 2x²-3x²= -x² 6x-7x= -x 8+1=9 all equal to -x²-x+9

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2 years ago

A school is planning to construct two rectangular play areas in the playground. The length of play area A must be 1 foot longer

Anna11 [10]

Answer:

А.The system has two solutions, but only one is viable because the other results in a negative width.

Step-by-step explanation:

Given

Let:

$L_A \to$ length of play area A

$W_A \to$ width of play area A

$L_B \to$ length of play area B

$W_B \to$ width of play area B

$x \to$ Area of A

$y \to$ Area of B

From the question, we have the following:

$L_A = 1 + 4W_A$

$W_B = 2 + W_A$

$L_B = 2 + 3W_B$

$x = y$

The area of A is:

$x = L_A * W_A$

This gives:

$x = (1 + 4W_A) * W_A$

Open bracket

$x = W_A + 4W_A^2$

The area of B is:

$y = L_B * W_B$

$y = (2 + 3W_B) * ( 2 + W_A)$

Substitute: $W_B = 2 + W_A$

$y = (2 + 3(2 + W_A)) * ( 2 + W_A)$

Open brackets

$y = (2 + 6 + 3W_A) * ( 2 + W_A)$

$y = (8 + 3W_A) * ( 2 + W_A)$

Expand

$y = 16 + 8W_A + 6W_A + 3W_A^2$

$y = 16 + 14W_A + 3W_A^2$

We have that:

$x = y$

This gives:

$W_A + 4W_A^2 = 16 + 14W_A + 3W_A^2$

Collect like terms

$4W_A^2 - 3W_A^2 + W_A -14W_A - 16 =0$

$W_A^2 -13W_A - 16 =0$

Using quadratic calculator, we have:

$W_A = -14.1$ or $W = 1.13$ --- approximated

But the width can not be negative; So:

$W = 1.19$

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2 years ago

An astronaut was exploring the moon of a distant planet, and found some glowing goo at the bottom of a very deep crater. She bro

Soloha48 [4]

Answer:

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3 years ago

Is it <br> a.x = _<br> b. the solution is all real numbers <br> c. there is no solution

Zielflug [23.3K]

The solution to the given algebraic equation 1000(7x - 10) = 50(292 + 100x) is; x = 12.3

<h3>How to simplify algebraic equations?</h3>

We want to simplify the algebraic equation;

1000(7x - 10) = 50(292 + 100x)

The first step is to use distributive property of equality to expand the bracket to get;

7000x - 10000 = 14600 + 5000x

7000x - 5000x = 14600 + 10000

2000x = 24600

Use division property of equality to divide both sides by 2000 to get;

x = 24600/2000

x = 12.3

Thus, we can conclude that the solution to the given algebraic equation 1000(7x - 10) = 50(292 + 100x) is; x = 12.3

Read more about algebraic equations at; brainly.com/question/723406

#SPJ1

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1 year ago