If dy /dx is undefined for a given value of x, then the line tangent to the curve y = f(x) at that value does not exist.

False. The tangent line at that point is a vertical line.

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

mx+89b(-98)nb

step-by-step explanation: