Please help! I only have 4 questions left!!!

Mathematics

2 answers:

allsm [11]3 years ago

7 0

Go through the list of choices. Add up the angles. If the result is 180, then we have the answer

A) 60+45+70 = 175, which isn't 180 so we scratch this off the list

B) 30+85+25 = 140, also doesn't work

C) 55+90+35 = 180, we found the answer

D) 110+15+45 = 170, doesn't work

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In summary, the answer is choice C) 55 degrees, 90 degrees, 35 degrees

umka2103 [35]3 years ago

6 0

C because the angle needs to add up to 180 degrees

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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