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3 years ago

What is the MAD of 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89 ? I'm very confused.

1 answer:

dsp733 years ago

6 0

MAD= mean absolute deviation. Find the mean first. So if you add all the numbers and divide by the amount of numbers. Then you do the data value subtracted by the mean. Mean= 912 divided by 12 which equals 76. 912-76= 836. Sorry if it’s wrong, I don’t remember much from learning this.

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kakasveta [241]

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3 years ago

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Use the distributive property to express 27 +60

Travka [436]

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4 years ago

The smaller triangle is a pre-image of the bigger triangle the center dilation is (1,-1) What is the scale factor used to create

kozerog [31]

Answer:

B. -4

Step-by-step explanation:

When dilation is not about the origin then in order to find the scalar factor, we need to find the ratio of the corresponding lengths.

2 Vertices of smaller triangle (Pre-image):

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$\sqrt{((1-1)^2+1-(-1))^2}=\sqrt{0+(1+1)^2} = \sqrt{4} =\pm2$

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Length of side:

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

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Since distance is always positive so its 8 units.

For the given figure we see that the dilated image is rotated 180° from the original position. Thus, for such dilation the scalar factor is taken negative.

Thus the scalar factor can be calculated as:

Scalar factor = $-\frac{length\ of \ image}{length\ of\ pre-image} =-\frac{8}{2} = -4$

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3 years ago

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Ivenika [448]

Answer:

Y = 1/4x-1

X = 4y-1

Step-by-step explanation:

layout the equations :

x+1/y = 4 y+1/x = 1/4

solve the equations, remember to switch sides switch signs solving the equations will give us the value of the letter

x+1/y = 4

x+1 = 4y

x=4y-1

***

y+1/x = 1/4

y+1 = 1/4x

y = 1/4x-1

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Bogdan [553]

Answer: f=9

Step-by-step explanation:

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