Walter is mixing cement for his new patio. he knows he needs to use a water-to-cement ration of 20-30. what percent of his total mixture is water?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4