I accidentally posted the rest of the questions on another post on my account 2. A study was done to determine how fuel economy of a particular car was related to the speed
at which it was driven. The results are shown in the table below. Use this data to create an
accurate soatterplot and a line of best fit using a quadratic regression. Finally, answer the
questions on the next page (5 marks for graph + 9 for questions)
Mel Foonomy Research
Fuel
Speed
Boonomy
(U100 km)
103
9,2
8.3
quodratic
04
72
SO
SS
8.2
SO
7.9
7.8
7.7
8.2
8.6
9.3
104
112
Write your regression equation using F for fuel economy and k for km/h. Round these

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40