Cho hình chóp S. ABVC có đáy lkaf tam giác cân tại A AB=AC=a, góc BAC=120 độ . Tam giác SAB là tam gics đều nằm trong mặt phẳng buông góc mặt đáy . Tính thê tíc hình chóp

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?