sam answered 90 % of the questions on a math test correctly. how many did he get correct if there are 40 questions?​

Ineed if you could explain and give me the answer you! this needs done

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Parks is wearing several rubber bracelets one third of the bracelets are tie dye 1/6 are blue and 1/3 of the remainder are camouflage if park swears to camouflage bracelets how many bracelets does he have on