Identify the measurements of the missing angles

-4 + 12x = 80

11x + 3 = 80

Step-by-step explanation:

-4 + 12x

-4 + 12 (7)

-4 + 84

80

11x + 3

11 (7) + 3

77 + 3

80

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.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!