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Brut [27]
4 years ago
13

A wave has a wavelength of 20 meters and a speed of 80 meters/second. What is the hertz of the wave ?

Mathematics
1 answer:
nlexa [21]4 years ago
8 0

Answer:

4 Hz

Step-by-step explanation:

Formula: frequency = velocity/wavelength

<em>f</em> = 80/20

<em>f</em> = 4

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Ubtract 2Five-sixths – 1One-third.
gayaneshka [121]

Answer:

Step-by-step explanation:

Please type numerals and punctuation for your mixed numbers.

I will have to assume that you meant 2 5/6 and 1 1/3, and that you are subtracting 2 5/6 from - 1 1/3.  If that is correct, then we determine the LCD and rewrite -1 1/3 using this LCD:

 -1 1/3           -1 2/6

 -2 5/6         -2 5/6

                    ----------

                      -3 7/6 or -4 1/6

The best calculation of this difference is -4 1/6 and the best estimate is

-1 - 3, or -4

5 0
3 years ago
Given f(x) = 3x- 1 and 9(x) = 2x-3, for which value of
Montano1993 [528]

Answer:

x = 4

Step-by-step explanation:

f(x)=3x-1\\g(x)=2x-3

substitute x = 2 into f(x):

f(2)=(3 \times2)-1=5

equate g(x) with found value for f(2) and solve for x:

g(x)=f(2)\\2x-3=5\\2x=8\\x=4

5 0
2 years ago
Change the percent to a decimal equivalent.<br> 9 7/10
Simora [160]

Answer:

0.97

Step-by-step explanation:

97 /100

You can round once from behind to convert 97% to 0.97

6 0
4 years ago
Read 2 more answers
Jelly makes $9 per hour. she had worked 8 hours so far this week. How much has she made so far this week? Write an algebraic exp
Brrunno [24]

Answer:

8×9=x x=72 * don't forget Mark me as Brainliest

3 0
3 years ago
Graph a line with a slope of -3 that contains the point (4, -2)
Crank

Answer:

Step-by-step explanation:

Given that

Slope m=-3

A point (x, y)=(4,-2)

Equation of a line can generally be written as

y=mx+c

Where, m is the slope

And c is the intercept on y-axis

Since we are given m=-3

Then, y=mx+c becomes

y=-3x+c

To get c, let substitute the point given, i.e x=4 and y=-2

y=-3x+c

-2=-3(4)+c

-2=-12+c

-2+12=c

c=-2+12

c=10

y=mx+c, then m=-3 and c=10

Then, the equation the line becomes y = -3x + 10

This is the required line equation

5 0
4 years ago
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