I really don't understand what it is asking. Also I need help.

1) 45°; 2) 3√2.

Step-by-step explanation:

1) according to the condition the lengths BC=AC and m(∠C)=90°, it means m(∠θ)=(180-90)/2=45°;

2) if AC=BC=3 and m(∠C)=90°, then AB=AC*√2=3√2

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.