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2 years ago

What is the speed of a wave that has a frequency of 900 HZ and a wavelength of 2.3 m?

Mathematics

1 answer:

Delicious77 [7]2 years ago

5 0

Answer:

2070m/s

Step-by-step explanation:

frequency=900HZ

Wavelength=2.3m

now,

speed of wave= frequency × wavelength =900×2.3

=2070m/s

ANSWER

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3, 9, 10, 5, 8, 5, 9, 11, 10, 3, 10 Find the mean of the data.

slava [35]

Answer:

7.55

Step-by-step explanation:

An arithmetic mean is the average value of all the data points.

In order to find the average value, you add all the data points then divide the resulting sum by the number of data points there are.

The sum of all data points:

3 + 9 + 10 + 5 + 8 + 5 + 9 + 11 + 10 + 3 + 10 =

The number of data points:

3, 9, 10, 5, 8, 5, 9, 11, 10, 3, 10

1,2,3,4,5,6,7,8,9,10, 11 = 11 data points

Average value/ Mean:

83 / 11 = 7.545454545454 = rounded to 7.55

7 0

2 years ago

The original price of a skateboard, not including tax, was $96. Charlie bought the skateboard on sale, and he saved 30% off of t

Juli2301 [7.4K]

Answer:

The sale price was $67.20

Step-by-step explanation:

The sale price is 30% less than the original price. Symbolically,

Sale price: (100% less 30%) of $96, or

(1.00 - 0.30)($96), or 0.70($96) = $67.20

The sale price was $67.20

6 0

2 years ago

Describe how the graph of y= 1/3x is the same and different from the graph of y= 1/3x - 4

uranmaximum [27]

Answer:

the lines have the same slope

the y-intercept of the lines are different

Step-by-step explanation:

7 0

2 years ago

Find the equation for the circle with a diameter whose endpoints are (5,-3) and (2,1).

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

To write an equation for a circle, we need to find the center and the radius. We need to find the distance between the two endpoints to find the radius. To do that, use the distance formula:

d = √(2 - 5)² + (1 + 3)²

√(-3)² + (4)²

√9 + 16 = √25 = 5

If the diameter is 5, the radius is 2.5

Now we need to find the center/midpoint. Use the midpoint formula:

(5 + 2)/2, (-3 + 1)/2

7/2, -2/2

(3.5, -1)

Now that we have the center and the radius, we can make our equation. Remember that the equation of a circle is: (x - x of center)² + (y - y of center) = radius²

(x - 3.5)² + (y + 1)² = 6.25

Hope this helps

5 0

3 years ago

Solve for the value of n.<br> (9n-8)<br> (6n-7)

OverLord2011 [107]

Answer:

(9n-8)=(6n-7)

n = $\frac{1}{3}$

Step-by-step explanation:

Plug in if you want to check

3 0

2 years ago