According to the scientific method, what should you do before you formulate a hypothesis? a. collect data. b. make observations and identify the problem. c. study the results. d. tell other scientists what you discovered.

B

Step-by-step explanation:

Okay so the first answer you can't collect data on something you don't know about. B is the correct answer because you need to make observations and identfy the problem. C. You have no results to study if you don't make observations. D. If you don't study and follow the steps theres nothing to tell anyone you discovered

d i think

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)