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3 years ago

PLEEASE HELP ASAP!

Mathematics

1 answer:

svetoff [14.1K]3 years ago

4 0

It would be 2/3 because the rise is 2 and the run is the 3

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What is the value of y when -5 = = y - 7? 9 a. -7 b.-11 C. -38 d. -52

weqwewe [10]

Answer:

Step-by-step explanation:

You have to cancel the -7 so you would add +7 to each side.

-7+7=0, -5+7= 2

y=2

Although this isn't an answer choice. Did you mistype something?

8 0

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)

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

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

7 0

3 years ago

HELP!!

cluponka [151]

42 6 7 times is 42 so the answer will be 42

7 0

3 years ago

Read 2 more answers

What is the sum of -5 and -5? -10 10 0

Kipish [7]

Answer:

-10

Step-by-step explanation:

5 0

3 years ago

11. GARDEN Emily calculates that the area of a flower garden is 28.125. She measured

Svetlanka [38]

Answer:

A=28.13 Sq Ft

Step-by-step explanation:

Given that the length of the garden = 4.5 ft

Breadth of the garden = 6.25 ft

Area is given by the formula

A=length x breadth

A=4.5 x 6.25 sq ft

A= 28.125 sq ft

Here if we round the area to the nearest hundredth, the area will be

A=28.13 Sq Ft

7 0

3 years ago