What ratio can we say are equivalent to 2: 9 how do you get the answer explain to me

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together