Câu 1. 1 T4Một mệnh đề phải thỏa mãn: A. Vừa đúng, vừa sai. B. Luôn luôn sai.
C. Mệnh đề đúng. D. Mệnh đề vừa đúng, vừa sai.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work:

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat