**Answer:**

**<u>It</u>****<u> </u>****<u>is</u>****<u> </u>****<u>(</u>****<u>x</u>****<u> </u>****<u>-</u>****<u> </u>****<u>3</u>****<u>)</u>****<u>³</u>****<u> </u>****<u>-</u>****<u> </u>****<u>9</u>****<u>x</u>****<u>(</u>****<u>3</u>****<u> </u>****<u>-</u>****<u> </u>****<u>x</u>****<u>)</u>**

**Step-by-step explanation:**

Express **2****7**** **in terms of cubes, 27 = 3³:

From trinomial expansion:

open first two brackets to get a quadratic equation:

expand further:

take y to be 3, then substitute:

**Answer:**

The parasailor height is 47ft

**Step-by-step explanation:**

We can think of the problem as a right triangle, the string would be the hypotenuse and the height of the parasailor would be a leg.

well to start we have to know the relationship between angles, legs and the hypotenuse

α = 36°

a: adjacent

o: opposite = ?

h: hypotenuse = 80ft

sin α = o/h

cos α= a/h

tan α = o/a

we see that it has (angle, hypotenuse, opposite)

is the sine

sin α = o/h

sin 36° = o/80

sin 36° * 80 = o

47.02 = o

if we round to the nearest tenth

47.02 = 47.0

The parasailor height is 47ft

Your answer is 9f/g. Hope it helps

**Answer: **Option D :3.85 units.

**Step-by-step explanation: **Diameter is the longest chord of any circle . It is a straight line passing through the center of the circle and touches the circle at two points. Radius is a line drawn from the center of circle to the circumference. Radius is half of diameter.In the given figure the blue line is diameter .The diameter is the blue line which equals 7.7 units.Radius is half of diameter .Radius = 7.7÷2=3.85 units.

Option D is the right answer.