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Dmitry_Shevchenko [17]
3 years ago
13

Is the inequality true. -2(2x+9)>_4x+9

Mathematics
2 answers:
zlopas [31]3 years ago
6 0

Answer:

The inequality is not true

Step-by-step explanation:

we have

-2(2x+9)> -4x+9

Distributed left side

-4x-18 > -4x+9

Adds 4x both sides

-18 > 9 ----> is not true

Oksana_A [137]3 years ago
3 0

Answer:  

The inequality is False

Step-by-step explanation:

We say that an inequality is true when the inequality symbol is satisfied. For example

5> 2   → <em>True</em>

On the contrary when inequality is not satisfied we say that it is false. For example:

2> 30  → <em>False</em>

2 is not greater than 30, therefore it is said that inequality is not satisfied.

In this case we have the following inequality:

-2(2x+9)>-4x+9

To find out if inequality is satisfied, we simplify the terms

-2(2x+9)>-4x+9

-4x-18>-4x+9

-18>9

Observe that -18 is not greater than 9, therefore it is said that inequality is not satisfied.

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Maru [420]

Answer:

a=2, b=5

Step-by-step explanation:

Let

n -----> the denominator

we have

3.5*10^4=\frac{7*10^9}{n}

Solve for n

That means -----> isolate the variable n

Multiply by n both sides

3.5*10^4(n)=7*10^9

Divide by 3.5*10^4 both sides

n=\frac{7*10^9}{3.5*10^4}=(\frac{7}{3.5})(\frac{10^9}{10^4})=2*10^5

therefore

a=2, b=5

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3 years ago
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The differential equation in Example 3 of Section 2.1 is a well-known population model. Suppose the DE is changed to dP dt = P(a
LuckyWell [14K]

Answer:

Decreases

Step-by-step explanation:

We need to determine the integral of the DE;

dP/dt=P(aP-b)

dP=P(aP-b)dt

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We can solve this by integration by parts on the left side. We expand the fraction 1/P²:

1/(d-b/P)\cdot{P^2} dP

let

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6 0
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Tucker worked 5.5 hours on Saturday. He earns $7.20 per hour.<br> How much did he earn on Saturday?
Mrac [35]

Answer:

$39.6

Step-by-step explanation:

5.5 times 7.20 = $39.6

6 0
2 years ago
Name a decimal between 0.4 and 0.5
Aliun [14]

To find a number between both decimals, what you can do is take the average of both numbers.

We have then:

average = \frac{0.4+0.5}{2}

Rewriting we have:

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Therefore, the decimal obtained is a number between 0.4 and 0.5

Answer:

a decimal between 0.4 and 0.5 is:

average = 0.45

6 0
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