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GenaCL600 [577]
3 years ago
12

9 - 8a = - 35} " alt=" - 5 \sqrt{49 - 8a = - 35} " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Tcecarenko [31]3 years ago
7 0

- 5 \sqrt{49 - 8a =  - 35}  \\  \\ 1. \:  - 8a = 0 \\  \\ 2. \:  \frac{ - 8a}{ - 8} =  \frac{0}{ - 8}   \\ a = 0

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The mean and standard deviation for number of robberies in the U.S. from 2000 to 2015 are x̄ = 354,718 and sx = 28,803. The mean
Basile [38]

Answer:

\hat{y}=309,552.15 + 1.31x

Step-by-step explanation:

The equation for the least-squares regression is,

\hat{y}=a+bx

where b is the slope and a is the intercept.

They can be found out by,

b=r\cdot \dfrac{SD_y}{SD_x},\\\\a=\overline{y}-b\overline{x}

where,

r = correlation coefficient = 0.84

SD_y = standard deviation of y = 44,910

SD_x = standard deviation of x = 28,803

\overline{y} = mean of y = 774,140

\overline{x} = mean of x = 354,718

Putting the values,

b=0.84\cdot \dfrac{44910}{28803}=1.309\approx 1.31

a=774140-(1.31\times 354718)\approx 309,552.15

Therefore the equation is,

\hat{y}=309,552.15 + 1.31x


8 0
3 years ago
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Katyanochek1 [597]
Number one is 5

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7 0
2 years ago
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Solve for x in the diagram below.
NemiM [27]

Answer:

x = 20

Step-by-step explanation:

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4x+10 = 90

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3 0
3 years ago
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The is 10 is meters

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We substitute the values to get,

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2 \times 95= 19 \times height

\frac{190}{19}  = height

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The height is 10 meters.

6 0
3 years ago
The ratio if the base edges of two similar pyramids is 3:4 the volume of the larger pyramid is 320 in^3. What is the volume of t
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ratio of voljumes = 3^3 : 4^3 or 27:64 small/large = 27 / 64 vol of smaller = 27 * 320 / 64 =135

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3 years ago
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