In a box of decorative buttons, each set of 10 buttons contains two red, three green, one yellow, and four blue buttons. how many total buttons are in a box if that’s are 18 red buttons?

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6