Answer:
100 revolitions
Step-by-step explanation:
180s = 3min
50s = 1min
50 * 2 = 100
Elimination is the right answer
So firstly, what two terms have a product of 8x^2 and a sum of 9x? That would be x and 8x. Replace 9x with x + 8x: 
Next, factor x^2 + x and 8x + 8 separately. Make sure that they have the same quantity on the inside: 
Now you can rewrite the equation as 
Now using zero product property, solve for x:

<u>In short, the solutions are {-1,-8}, or C.</u>
7.3 is your answer my guy
Answer:

Step-by-step explanation:
Unshaded Right Triangle

Whole Triangle

Shaded triangle

If you dont want as many steps, just calculate the triangle and dont worry about the right triangle the formula is
