The production rate of a steel factory is declining due to old machinery. over the last eight days production has dropped by 1.2 tons. what is the average rate of change in steel production over the eight days? express the answer in tons per day.

The average rate of change in steel production over the eight days is 0.15 tons per day

Step-by-step explanation:

Over the last eight days production has dropped by 1.2 tons.

Production dropped in 8 days = - 1.2

Production dropped in 1 day =

                                             =

So, the average rate of change in steel production over the eight days is 0.15 tons per day

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.

the radius is 2 times the diameter.

step-by-step explanation: