Plz all of them. plzz do show workout

Step-by-step explanation:

first question:

angles opposite to equal sides are equal

angle a + angle b + angle c =180

angle a = angle b

2 * angle B + angle c = 180

2* angle B = 128

angle B = 44

7

step-by-step explanation:

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.