A circle has a radius of 4 cm. What is the area rounded to the tenths place? (Use 3.14 for pi.) 12.6 cm squared
25.1 cm squared
50.2 cm squared
201.0 cm squared​

Answer:

The 95% confidence interval for the true proportion of the given population that smokes is (0.1630, 0.2204).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the z-score that has a p-value of [tex]1 - \frac{\alpha}{2}[/tex].

Sample of 725, 139 smoke:

This means that [tex]n = 725, \pi = \frac{139}{725} = 0.1917[/tex]

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a p-value of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1917 - 1.96\sqrt{\frac{0.1917*0.8083}{725}} = 0.1630[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1917 + 1.96\sqrt{\frac{0.1917*0.8083}{725}} = 0.2204[/tex]

The 95% confidence interval for the true proportion of the given population that smokes is (0.1630, 0.2204).

9514 1404 393

Answer:

  4.41

Step-by-step explanation:

The sides of interest in this right triangle are the hypotenuse and the side adjacent to the given angle. The relevant trig relation is ...

  Cos = Adjacent/Hypotenuse

  cos(25°) = 4/AB

Multiplying by AB and dividing by cos(25°), we get ...

  AB = 4/cos(25°)

  AB ≈ 4.41 . . . . units

Answer:

0.71

Step-by-step explanation:

P( b or c) = P(b) + P(c) 0 P(b and c)

P(b) = 10/35 = 0.2857

P(c) = 15/35 = 0.42857142857

10/35 + 15/35 - 0 = 25/35, or 0.71

Answer:

102.35

8.5 is the diameter and we need the radius which is 4.25. 4.25 ^ 3 is 76.75625 and times that by 4 gives us 307.0625 and divide that by 3 gives me 102.35 rounded to the nearest hundrenth

Answer:

6.029

6

8.104

2.9 or .29

4.978

.978

1.032

Step-by-step explanation:

Answer:

6029=6000

6000=600

8104=8000

290=0

4978=5000

978=1000

1032=1000

Answer:

Follow the steps

Step-by-step explanation:

Angle M is 95 degrees.

Answer:

6 and 8

Step-by-step explanation:

Pythagorean theorem: a² + b² = c²

Given this,

(3x)² + (4x)² = 10²

9x² + 16x² = 100

25x² = 100

Divide both sides by 25

x² = 4

x = 2

Substitute this into 3x and 4x.

3x = 3 * 2 = 6

4x = 4 * 2 = 8

Thus, the answer is 6 and 8

Step-by-step explanation:

1.

[tex]a = \frac{1}{2} b \times h \\ \frac{1}{2} \times 8 \times 7 \\ a = 4 \times 7 = 28 {cm}^{2} [/tex]

2.

[tex]a = \frac{1}{2} b \times h \\ a = \frac{1}{2} \times 10 \times 10 \\ a = 10 \times 5 = 50 {ft}^{2} [/tex]

Answer:

1

Step-by-step explanation:

https://brainly.com/question/23396982?answering=true&answeringSource=greatJob%2FquestionPage%2F1

Answer:

30

Step-by-step explanation:

Answer:

c. 45.34ft

Step-by-step explanation:

When leg one of the triangle is 15ft and leg two is 17 ft you would take   17^2 + 15^2 and then you find the square root of that (514) to get the hypotenuse of the triangle. After that you multiply by two to account for the 2/2 sqaure foot per each unit

Answer:

d33z nuts

Step-by-step explanation:

gottem

Answer:

3 1/8 cups of blueberries

Step-by-step explanation:

1 1/4 x 2 1/2 = 5/4 x 5/2 = 25/8 = 3 1/8

9514 1404 393

Answer:

  z = 4

Step-by-step explanation:

There are an infinite number of equivalent equations. Any of them can be found by making use of the properties of equality.

You can divide both sides by 1.5 to get ...

  1.5z/1.5 = 6/1.5

  z = 4

__

You can add something to both sides:

  1.5z +q = 6 +q

__

You can apply some function to both sides:

  arctan(1.5z) = arctan(6)

Answer:

11×-2x= -22

11×3= 33

-22+33=11

11x

brainiest please

Answer:

21 AED

Step-by-step explanation:

W know the cost of each kind of meat

Chicken = 4 AED

Beef = 3 AED

We also know how much of each we will be buying

Chicken = 3.6 kg

Beef = 2.2 kg

Multiply each price of meat by its respective weight, then add the products together for you final answer.

4(3.6) + 3(2.2) = 21

Answer:

B

Step-by-step explanation:

Though it is not obvious, the c belongs in the numberator, not the denominator.

So C and D are both wrong.

9: 3 * 3

3: 3

4:2 * 2

Lowest common denominator = 2 * 2 * 3 * 3

Lowest common denominator = 36

B

Answer:

D) 104 square units

Step-by-step explanation:

Two triangles:  2x1/2x6x8=48

Rectangle:  7x8=56

48+56=104

Wins to losses

[tex]\ \ \sf\longmapsto 15/6=5/2=5:2[/tex]

[tex]\ \ \sf\longmapsto 6/15=2/5=2:5[/tex]

Answer:

The last one 13^3/5

Step-by-step explanation:

13^3/5

Answer:

4 schools

Step-by-step explanation:

Based on the box plot you have given above, the answer would be 20% of the total schools participated for 6 years or more. This is because the part of the box plot wherein it hits 6 years and above is 20%. Thus, if there are 20 schools, then the 20% of it would be 4. In conclusion, there are 4 schools that participated for 6 years or more.

Answer:

<COD and <DOB

Step-by-step explanation:

Complimentary angles add to 90. The two angles that make up the marked right angle are <COD and <DOB

Answer:

6

Step-by-step explanation:

6

Answer:

we can't answer this bc u dont show which side is whicj

Step-by-step explanation:

but u need to use sin, cos, or tan

Answer:

See graph

Step-by-step explanation:

The red graph is y = 2 sin x where the blue section represents one cycle where 0≤∅≤2π where ∅ is measured in radians.

Answer:

x > 4

Step-by-step explanation:

2(x + 1) > 10

x + 1 > 5

x > 4

Answer:

why isn't anybody answering. I guess ill have too.

Step-by-step explanation:

Ok.