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2 years ago

Find the value of x and y

Mathematics

1 answer:

PolarNik [594]2 years ago

7 0

Answer:

x=90: y =43

Step-by-step explanation:

Given is a triangle. In ABC, AB = AC is given. also angle C = 47 is given.

AD is angle bisector of angle A

Since two sides are equal, ABC is isosceles. We have angle C = angle B

Hence angle B = 47 degrees.

Angle A = 180-(B+C) = 180-94 = 86

So angle y = 1/2 (86) = 43

Consider triangle BAD.

We have got two angles as 47 and 43.

Hence third angle is 180-(47+43) = 90

So x=90, y = 43

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A circle has radius 50 cm. Which of these is closest to its area?

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Answer:

7,854cm^2

Step-by-step explanation:

π50²=2500π

2500π=7853.98

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2 years ago

PLS HELP WITH THIS MATH

laiz [17]

I think it’s 28.35

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54 + 2.7 = 56.7
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2 years ago

Read 2 more answers

Which expression is equivalent to 3/24?

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2 years ago

1.9(2.3n+6)+10.45>43.7

Ulleksa [173]

Answer:

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Step-by-step explanation:

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2 years ago

A guitar string is plucked at a distance of 0.6 centimeters above its resting position and then released, causing vibration. The

liubo4ka [24]

Answer:

The equation that represents the motion of the string is given by:

$y =Ae^{-kt}\cos(2\pi ft)$ .....[1] where t represents the time in second.

Given that: A = 0.6 cm (distance above its resting position) , k = 1.8(damping constant) and frequency(f) = 105 cycles per second.

Substitute the given values in [1] we get;

$y =0.6e^{-1.8t}\cos(2\pi 105t)$

$y =0.6e^{-1.8t}\cos(210\pi t)$

(a)

The trigonometric function that models the motion of the string is given by:

$y =0.6e^{-1.8t}\cos(210\pi t)$

(b)

Determine the amount of time t that it takes the string to be damped so that $-0.24\leq y \leq0.24$

Using graphing calculator for the equation

$y =0.6e^{-1.8x}\cos(210\pi x)$

let x = t (time in sec)

Graph as shown below in the attachment:

we get:

the amount of time t that it takes the string to be damped so that $-0.24\leq y \leq0.24$ is, 0.5 sec

4 0

2 years ago