3 years ago

√(4x-9) + 1 =2√x Find the value of X

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

7 0

There are no values for x that make the equation true

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The diameter of the moon is 2,160 miles. A model has a scale of 1 in : 150 mi. What is the diameter of the model?

Charra [1.4K]

Answer:

The diameter of the model is 14.4 inches.

Step-by-step explanation:

The Diameter of the moon = 2,160 miles

The scale on the model represents 1 in = 150 miles

Let the model represents k inches in 2,160 miles.

So, by the Ratio of Proportionality:

$\frac{1}{150} = \frac{k}{2160}$

⇒ $k = \frac{2160}{150} \\\implies k = 14.4$

or, k = 14.4 inches

⇒On the scale 2160 miles is represented as 14.4 inches

Hence the diameter of the model is 14.4 inches.

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3 years ago

1. A jet travelled 640 miles in 2.5 hours. How far does it travel in 1 hour?

spin [16.1K]

Answer:

1.) 256 miles

2.) 2 1/2 ( 2.5 ) pages a day

Step-by-step explanation:

1.) ( 256 * 2.4 = 640 )

2.) 250 / 20 = 2.5

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3 years ago

What is the image of (-9,6) after a dilation by a scale factor of 4 centered at the origin?

myrzilka [38]

Answer:

( - 36, 24 )

Step-by-step explanation:

(- 9, 6) ------> ( - 9×4, 6×4) = ( - 36, 24 )

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3 years ago

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Alex

Answer:

Step-by-step explanation:

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3 years ago

Write the inequality. A number n is negative.

hoa [83]

Answer:

n < 0

Step-by-step explanation:

A negative number is one that is less than zero.

n < 0

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