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3 years ago

Y=5cos(20x) find amplitude, period & graph

Mathematics

1 answer:

bagirrra123 [75]3 years ago

5 0

Amplitude is 5
period is 360/20 = 18 degree
Im lazy to do graph

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Solve by completing the square <br><br> 6x-x^2-7

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3 years ago

The metal day fair has a recycling center that will a pay 10% early fee on the amount collected plus $2.75 for each metal collec

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Answer:

$37.8125

Step-by-step explanation:

$2.75 x 12.5 = 34.375

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4 years ago

Explain why surveying 100 people who are listed in the phone book may not be a random sample

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3 years ago

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garri49 [273]

The equation of the line is $y=\frac{3}{2} x+4$ .

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Here $x_1=2, x_2=0, y_1=7, y_2=4$

Substitute these in the given formula.

$$m=\frac{4-7}{0-2}$

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$y-y_1=m(x-x_1)$

You can take any point in the given line. Here the point is (2, 7).

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Multiply by 2 on both sides of the equation.

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$2y-14=3x-6$

Add 14 on both sides of the equation.

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3 years ago

If x+3y upon 5x+4y= 1/3 find the ratio of x:y ANSWER FASTTT

aniked [119]

Answer:

x : y = 5 : 2

Step-by-step explanation:

Given

$\frac{x+3y}{5x+4y}$ = $\frac{1}{3}$ ( cross- multiply )

5x + 4y = 3(x + 3y)

5x + 4y = 3x + 9y ( subtract 3x from both sides )

2x + 4y = 9y ( subtract 4y from both sides )

2x = 5y ( divide both sides by 2 )

x = $\frac{5}{2}$ y ( divide both sides by y )

$\frac{x}{y}$ = $\frac{5}{2}$ , that is

x : y = 5 : 2

8 0

3 years ago

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