Mark is buying a phone that is on sale for two fifths of the original price. after a $32 gift card is used, the total cost before tax is $16. find the original price

The trigonometric ratios sine and secant are reciprocals of each other

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.