To celebrate the first day of school, Adriana brought in a tray of caramel brownies and walnut brownies. She brought 88 brownies in all. 22 of the brownies were caramel. What percentage of the brownies were caramel?To celebrate the first day of school, Adriana brought in a tray of caramel brownies and walnut brownies. She brought 88 brownies in all. 22 of the brownies were caramel. What percentage of the brownies were caramel?

Step-by-step explanation:

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graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation:

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)