Cho hình chóp SABCD , ABCD là hình thang vuông tại A và B , SA vuông góc với ( ABCD) . Khẳng định nào sai A. CD VUÔNG GÓC ( SBC) B. BC VUÔNG GÓC ( SAB) C CD VUÔNG GÓC ( SAC) D. AB VUÔNG GÓC ( SAD)

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?