5924000264

21.07.2019 • 

Mathematics

Moreee the table shows the soil density of several soil samples at different depths. depth (m) 1 5 6 8 10 12 14 21 23 24 28 soil density ( ) 1045 1063 1102 1140 1191 1232 1249 1254 1265 1268 1273 (a) write the quadratic regression equation that models the data. let x = depth below the surface and let y = soil density. (b) use the equation to estimate the soil density of a sample at a depth of 20 m. show your work.

Ответ:

pnhandley01

21.07.2019

Mathematics

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To obtain the quadratic equation for the data set given, i have used excel spread sheet, this is shown in the attachment below. the equation is: y=-0.4931x²+23.38x+996.03b]the density of the sample at depth of 20 m will be : f(20)=-0.4931(20)²+23.38(20)+996.03f(20)=1266.39

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Ответ:

jamesc24

01.03.2021

Mathematics

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so, its pretty simple so just figure it it

Step-by-step explanation: so, its pretty simple so just figure it it

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