Which expression is equivalent to 9x − 2x + 3 and why? (1 point)

9x + x, because 9x − (2x − 3) = 9x + x
14x, because 9x − 2x + 3 = 9x + 5x = 14x
10x, because 9x − 2x + 3 = 7x + 3 = 10x
3 + 7x, because (9x − 2x) + 3 = 7x + 3 = 3 + 7x

Lindsay is creating a bridge out of dried pasta and glue. in her plans, she sketches the graph to determine the lengths of the noodles, in centimeters, needed for the arch to increase the length of the bridge in 1 centimeter increments.which function did lindsay use to create her design? f(x) = (x – 5)2 + 8 f(x) = –(x + 5)2 + 8 f(x) = 0.5(x + 5)2 + 8 f(x) = –0.5(x – 5)2 + 8

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?

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?