**Answer:**

difference in the proportion = 0.0452

**Step-by-step explanation:**

x1 = 27, n1 = 193,

p1 = 27/193

p1 = 0.1399

x2 = 16, n2 = 169,

p2 = 16/169

p2 = 0.0947

a) The best estimate for the difference in the proportion of smokers, using male proportion minus female proportion is 0.0452. Male smokes more than females in given sample.

p1 - p2 = 0.1399 - 0.0947

p1 - p2 = 0.0452

Answer: The area of circle V is 196π ft² (196Pi feet squared)

Step-by-step explanation:

From the equation for area of a circle,

A = πr²

Where A is the area of the circle

r is the radius of the circle

In Circle V, the radius, r of the circle is 14 feet

That is,

r = 14ft

Hence, Area is

A = π × (14ft)²

A = π × 14ft × 14ft

A = 196π ft²

Hence, the area of circle V is 196π ft² (196Pi feet squared)

yes i agree with her because elimination method is more simpler and shortest method to solve system of equations.

elimination method use to multiply of both equation in order to balance the variable x or y and then equate them.

example

x+2y=7 .....equation 1

x-3y=14 .......equation 2

so you can multiply equation 1 by -1 in order to equate x and get the value of y by saying equation 1 minus equation 2.

**Answer:**

9

**Step-by-step explanation:**

[1/2]^-1 +[1/3]^-1 +[1/4]^-1=9

**Answer:**

The figure below is showing the situation:

Figure

Now let the point is at a distance x from the shoreline where it is making the angle of 45 degrees.

So we have:

x

=

6

tan

θ

Now we have:

d

θ

d

t

=

2

π

5

So we have to find the velocity that is given by:

d

x

d

t

=

d

d

θ

(

6

tan

θ

)

=

6

sec

2

(

θ

)

d

θ

d

t

=>

d

x

d

t

=

6

sec

2

(

π

4

)

2

π

5

is the required velocity

**Step-by-step explanation:**

does that answer your question