a tap (A) fills a tank in 5 hours, atap (B) fills the same tank in 10 hours. Which of the alternatives below best represents thetime spent, if both taps are open simultaneously filling the same tank?

Question and answers are in the attached picture. you so much in advance.

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles