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3 years ago

2(x-4) is less than or equal to 10

Mathematics

2 answers:

Citrus2011 [14]3 years ago

8 0

Answer:

x is 9

Step-by-step explanation:

2(x-4)=10

if x is 9, 9-4 is 5

5 times 2 is 10.

but x can also be any number under 9 if you want less than specificaly:)

fredd [130]3 years ago

7 0

Answer:

less then

Step-by-step explanation:

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3 years ago

If 115% of a number is 460, what is 75% of that number?

Bond [772]

Answer:

300

Step-by-step explanation:

Step 1:

460/115 = x/75 Equation

Step 2:

115x = 34,500 Multiply

Step 3:

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Answer:

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Hope This Helps :)

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3 years ago

A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5

boyakko [2]

Additional information to complete the question:

How long does it take for a short pulse of light to travel from one end of the glass to the other?

Express your answer in terms of some or all of the variables f and L. Use the numeric value given for n in the introduction.

T = ___________ s

Answer:

$T = \frac{15}{f}$

Step-by-step explanation:

Given:

Thickness og glass = L

Index of refraction n=1.5

Frequency = f

$Wavelength = \frac{L}{10}$

λ(air) $= \frac{L}{10}$

λ(glass) = λ(air) / n

= $\frac{\frac{L}{10}}{1.5}$

= $\frac{L}{10} * \frac{1}{1.5}$

= $\frac{L}{15}$

V(glass) = fλ(glass)

$= f * \frac{L}{15}$

$T = \frac{L}{V_{glass}} = \frac{15}{f}$

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3 years ago

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jeyben [28]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers