My school girl friend who sits besides whispered slowly in my ears while my maths class was going "how to come in u?" my face got red how to handle such situations and she is doing now frequently to tease me​

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3

simple 80 pieces in 1 sercing so 80*47=3760+20=3780