Figure out the 4-digit number combination.

3481

Step-by-step explanation:

so so obviously I'm not sure of the answer but I think that Charles is C alphabetically number three and Harley is D which is number four and Akimi is 8 which is number eight and K for Kyle which is 11 but I take it as 1 so yeah

19.side- angle- side

20. angle- side- angle

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