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Zepler [3.9K]
3 years ago
5

Evaluate when x = 3, y = -3 and z = -2: xy + 2z

Mathematics
2 answers:
Zepler [3.9K]3 years ago
8 0
(3 x -3) + (2 x -2)
-9 - 4 = -13

wel3 years ago
4 0

Answer:

3*-3+2*-2=

Step-by-step explanation:

-13

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a sinusoid always function has an amplitude of 3, a frequency of 1/8pi, and a midline at 2. Which of the following equations sat
Katen [24]

Answer:

The correct option is;

f(x) = 3·sin x/8·π + 2

Step-by-step explanation:

The given parameters for the sinusoidal function are;

Amplitude of oscillation = 3

Frequency of oscillation = 1/8·π

Midline of oscillation= 2

The general form of sinusoidal equation is y = A·sin(B(x - C)) + D

Where;

A = The amplitude

B = The frequency

C = The horizontal shift

D = The midline or vertical shift

Substituting the given values into the general form of sinusoidal equation, we have;

f(x) = y =  3·sin(1/8·π(x - 0)) + 2 = 3·sin(x/8·π) + 2

Which gives;

f(x) = 3·sin(x/8·π) + 2.

5 0
4 years ago
A particular curve is represented parametrically by x=cost, y=−sint, t∈[0,2π]. (a) As t increases on [0,2π], in which direction
cestrela7 [59]

Answer:

a) clockwise sense

b)  x² + y² = 1

c) y ∈ [0,1]

Step-by-step explanation:

a) x = cos (t)       y = -sin (t)

for t ∈ [ 0 , 2π ]

for t = 0   point  P  is    x = cos (0)   =  1   y = -sin (0)   y = 0

The point is on the x axis

Now let´s see what happens for t = π/4  

x = cos (π/4)    x = √2/2    and   y = - sin (π/4)    y = - √2/2

Note  π/4 is 45°

The coordinates of the new point P ´(t = π/4) are in the fourth quadrant

that means the point is moving clockwise sense.

b) x = cos(t)

   y = -sin(t)

Squaring on both sides of each equation we get:

x²  = cos²t

y²  = sin²(t)

Adding side by side

x²  +  y² = cos²t  + sin²t

x²  +  y² = 1

Values for y are    y  ( 0 , 1)

8 0
3 years ago
PLZ HELP MEEEE!!!
LiRa [457]

Answer:

D

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%5Csf%5Clarge%5Cgreen%7B%5Cunderbrace%7B%5Cred%7BQuestion%2A%7D%7D%7D%3A" id="TexFormula1" tit
harina [27]

Answer:

4x-8y+6=\\2(2x-4y+3)

4y^{2} -2y^{3} =\\2y(2y-y^{2} )

Step-by-step explanation:

4x-8y+6=\\2(2x-4y+3)

4y^{2} -2y^{3} =\\2y(2y-y^{2} )

5 0
2 years ago
WhAt is the volume of the right circular cone with the radius of 4cm and a height of 12cm
aivan3 [116]
201.06 It is easy.  You can search it up on google.
5 0
4 years ago
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