What is the missing angle in the triangle?

56°

65°

86°

68°

35 degrees

Step-by-step explanation:

All three angles must add up to 180 degrees

55+90=145

180-45=35

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

4 adults and 12 babies

step-by-step explanation:

4 x 7 = 28

12 x 15 = 180

180 + 28 =208

4 x 3 = 12