Do the ratios 8:24, and 5:15 form a proportion

yes
no

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?

What is the absolute value of the complex number -4-sqrt2i

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle