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Nutka1998 [239]
4 years ago
8

99 POINTS. WILL MARK BRAINLEST!!!

Mathematics
2 answers:
Korvikt [17]4 years ago
8 0

Answer:

I think you should multiply them, the speed is 25 * 3 = 75 m/s

Tamiku [17]4 years ago
4 0

Answer:

Speed = 75 m/s

Step-by-step explanation:

The formula to find the speed of a wave is found by

Speed = Wavelength x Frequency  where the frequency is in HZ and the wavelength is in meters

Speed =  3*25

Speed = 75 m/s

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SINE COSINE and TANGENT ratios <br>(Type an integer or simplified fraction)
katen-ka-za [31]

Answer:

<em>17 / 8</em>

Step-by-step explanation:

sec A = \frac{1}{cos A}

cos A = \frac{40}{85} = \frac{8}{17} ⇒ <em>sec A = </em>\frac{17}{8}<em> </em>

6 0
3 years ago
Use the given conditions to write an equation for each line in general form.
Aneli [31]

Answer:

It's the last choice:

2x + y - 1 = 0.

Step-by-step explanation:

x - 2y - 3 = 0

Convert to slope-intercept form in order to find the slope:

-2y = -x + 3

y = 1/2x - 3/2

So the slope  is 1/2.  The slope of a line perpendicular to this is -1 / 1/2 = -2.

Using the point-slope form to find  the required equation:

y - y1 = m(x - x1)

x = 4 and y = -7 so we have:

y + 7 = -2(x - 4)

y + 7 = -2x + 8

2x + y - 1 = 0  is the answer.

6 0
4 years ago
What is the area of a circle with a diameter of 15.8 cm?
pochemuha
Multiply 15.8 by 3.14 and u have ur awnser
5 0
3 years ago
Grape juice comes in a 64 oz bottle. Apple juice comes in a 80 ounce bottle. Both juices will be poured into cups of equal size
nika2105 [10]
An 80 ounce cup i may be wrong
4 0
3 years ago
Help please i donit know the answer
Svetlanka [38]

Answer:

96°

Step-by-step explanation:

Opposite angles in a parallelogram are equal.

4 0
3 years ago
Read 2 more answers
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