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wolverine [178]
3 years ago
14

F(x) = 10x2 + 8, evaluate f(-3).

Mathematics
1 answer:
OlgaM077 [116]3 years ago
5 0

Answer:

98

Step-by-step explanation:

f(x) = 10x² + 8

= 10(-3)² + 8

= 10 (9) + 8

= 90 + 8

= 98

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US Department of Transportation As part of a study on transportation safety, the US Department of Transportation collected data
Nonamiya [84]

Answer:

  • we can conclude that for every single unit of : x, y would be increased by 0.2871.  and intersection of x and y will be through =1.5974
  • it  can be  concluded that they are strongly positively correlated. There is strong and positive correlation between them. i.e the number of fatal accidents and the drivers under the age of 21

Step-by-step explanation:

WITH THE GIVEN DATA

A ) using regression to investigate the relationship between the number of fatal accidents and the percentage of drivers under the age pf 21

to fit into a regression line we must have ∝ and β

where β = \frac{S_{xy} }{S_{xx} }   = 0.2871

and ∝ = y - βx   =  - 1.5974

regression line = ∝ + β * x

insert values into regression line equation

regression line = -1.5974 + 0.2871 * x

we can conclude that for every single unit of : x, y would be increased by 0.2871.  and intersection of x and y will be through =1.5974

B ) conclusion and recommendations can you derive from your analysis

it  can be  concluded that they are strongly positively correlated. There is strong and positive correlation between them. i.e the number of fatal accidents and the drivers under the age of 21

using the correlation coefficient  ( r ) = \frac{S_{xy} }{\sqrt{S_{xx}*S_{xy}  } }    = 0.8394

5 0
3 years ago
N-1-9n <br> simplify this please?
LiRa [457]

Answer:

-8n-1

Step-by-step explanation:

n-1-9n=n-9n-1=-8n-1

7 0
3 years ago
In a slight hurry thanks for all the help!
julsineya [31]

Answer:

10.

Step-by-step explanation:

AK = KB so

3x + 1 = 1/3 x + 9

3x - 1/3 x = 9 - 1 = 8

Multiply through by 3:

9x - x = 24

8x = 24

x = 3

So AK =  3(3) + 1 = 10.

4 0
3 years ago
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Serjik [45]
The anwser you are looking for is 17
8 0
3 years ago
Express in exponential form. log(x)=3
Crank

Answer:

x=1000

Step-by-step explanation:

7 0
3 years ago
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