Susana is enrolled in a photography class and has been pricing entry-level DSLR cameras. The prices are Normally distributed. Use the z-table to answer the question. Complete each statement. The z-score of about tells us that 88% of the observations in the distribution are at or below standard deviations above the mean. The z-score of about tells us that 12% of the observations in the distribution are at or below standard deviations below the mean.

i think is g(1)=-1.

hope that i can

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

ιт ωαѕ 5¢м вє¢αυѕє 1/4 σf 20 ιѕ 5

αи∂ 5*4=20

нσρє ι ¢συℓ∂ нєℓρ уσυ