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sleet_krkn [62]
3 years ago
12

What are 3 equivalent ratios to 18:4

Mathematics
2 answers:
True [87]3 years ago
3 0
36:8. 9:2 4.5:1

Hope this helps!
agasfer [191]3 years ago
3 0
54:12, 72:16, 90:20 I multiples them by 3,4 and 5 from 18:4
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Waves with an amplitude of 2 feet pass a dock every 30 seconds. Write an equation for a cosine function to model the height of a
kolbaska11 [484]

Answer:

The cosine function to model the height of a water particle above and below the mean water line is h = 2·cos((π/30)·t)

Step-by-step explanation:

The cosine function equation is given as follows h = d + a·cos(b(x - c))

Where:

\left | a \right | = Amplitude

2·π/b = The period

c = The phase shift

d = The vertical shift

h = Height of the function

x = The time duration of motion of the wave, t

The given data are;

The amplitude \left | a \right | = 2 feet

Time for the wave to pass the dock

The number of times the wave passes a point in each cycle = 2 times

Therefore;

The time for each complete cycle = 2 × 30 seconds  = 60 seconds

The time for each complete cycle = Period = 2·π/b = 60

b = π/30 =

Taking the phase shift as zero, (moving wave) and the vertical shift as zero (movement about the mean water line), we have

h = 0 + 2·cos(π/30(t - 0)) = 2·cos((π/30)·t)

The cosine function is h = 2·cos((π/30)·t).

4 0
3 years ago
Question 82 can u answer and tell me how this is the answer plzzz....
levacccp [35]
The surface are would be 81 bc the base area is 9 and you have four triangles with the area of 18. Add them all up and you get 81
7 0
3 years ago
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2x+2y=10 solve for x
irakobra [83]

Isolate the x. Note the equal sign. What you do to one side you do to the other.


Subtract 2y from both sides


2x + 2y (-2y) = 10 (-2y)


2x = 10 - 2y


Isolate the x, divide 2 from both sides and from all terms.


(2x)/2 = (10 - 2y)/2


x = 5 - y


Place the variable in the front


x = -y + 5


x = -y + 5 is your answer


hope this helps

7 0
3 years ago
What is the slope of the line containing the points (1,-1) and (3,3)
marishachu [46]

Answer:

1

Step-by-step explanation:

1111111111111111111

4 0
3 years ago
Which of the following functions results in a graph that shows exponential decay? f(x) = 4(0.8)x f(x) = 0.7(1.2)x f(x) = 12(3)x
Korvikt [17]

The function will show exponential decay if one of the following is true

  • the base is less than 1 and the exponent is positive
  • the base is greater than 1 and the exponent is negative

The function that meets the requirement for exponential decay is ...

f(x)=4\cdot 0.8^{x}\quad\text{matches the first choice}

5 0
3 years ago
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