Answer fast please By checking time records, a plumber finds that worker A can do a certain job in 12 hours. Worker B can do the same job in 9 hours. How many hours would the job take if the two plumbers worked together?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

Areflection of shape i across the y-axis, followed by a , and then a translation left 6 units and down 4 units confirms congruence between shape i and shape ii. alternatively, a of shape ii about the origin, followed by a reflection across the y-axis, and then a translation right 4 units and up 6 units confirms congruence between shape ii and shape i.