The environmental protection agency requires that the exhaust of each model of motor vehicle be tested for the level of several pollutants. the level of oxides of nitrogen (nox) in the exhaust of one light truck model was found to vary among individually trucks according to a normal distribution with mean 1.45 grams per mile driven and standard deviation 0.40 grams per mile. (a) what is the 90th percentile for nox exhaust, rounded to four decimal places? (b) find the interquartile range for the distribution of nox levels in the exhaust of trucks rounded to four decimal places.

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857

8

step-by-step explanation:

step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -