The half-life of a radioactive kind of radium is 11 days . how much will be left after 22 days , if you start with 64 grams of it?

Half- life means after the half life period, only half the original amount remains.

So after 11 days half of 64 grams remain: 64 / 2 = 32 grams,

The after another 11 days, which would be 22 days total ( 11x 2=22) only 32/2 = 16 grams would remain.

congruent segments

step-by-step explanation:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204