If a circle has a circumference of 81.64 cm, what is the radius?

Answers

Answer 1

Answer:

c = Circumference=pid= 81.64   To find the radius of a circle you can just divide the diameter by 2.

pi = 3.14

d = diameter=c/3.14                  Pi is always 3.14 or 22/7.

d = 81.64/3.14

d = 26

r= radius= 26/2

radius=13 cm

Step-by-step explanation:


Related Questions

You are measuring the height of a Ferris wheel at an amusement
park. You are standing 125 feet from its base. You measure the angle
of elevation from a point on the ground to the top of the Ferris wheel
to be 51°. Estimate the height of the Ferris wheel. Round your
answer to the nearest foot.

Answers

Answer:

154 ft

Step-by-step explanation:

A right triangle is formed, where the height of the wheel (h) is one leg,  the distance between you and the base of the wheel is the other leg, and the distance between you and the top of the wheel is the hypotenuse (the angle included between the last two sides is 51°)

From definition:

tan(51°) = opposite/adjacent

tan(51°) = h/125

h = tan(51°)*125

h = 154 ft

In ΔTUV, t = 410 cm, ∠U=27° and ∠V=78°. Find the length of v, to the nearest 10th of a centimeter.

Answers

Answer:

[tex]v \approx 415.2\,cm[/tex]

Step-by-step explanation:

The angle T is:

[tex]\angle T = 180^{\circ} - 27^{\circ} - 78^{\circ}[/tex]

[tex]\angle T = 75^{\circ}[/tex]

Now, the length of v is determine by the Law of Sines:

[tex]\frac{410\,cm}{\sin 75^{\circ}} = \frac{v}{\sin 78^{\circ}}[/tex]

[tex]v = (410\,cm)\cdot \left(\frac{\sin 78^{\circ}}{\sin 75^{\circ}} \right)[/tex]

[tex]v \approx 415.2\,cm[/tex]

K is the midpoint of JL



JK 2x + 4 and
KL = 4x - 8
Find JL.​

Answers

Step-by-step explanation:

If K is the midpoint of JL, then JK and KL will be congruent to each other because a midpoint divides a line into two congruent segments.

JK ≅ KL

Now, let's add in the expressions.

2x + 4 = 4x - 8

-2x + 4 = -8

-2x = -12

x = 6

So, the value of x is equal to 6. Since JK is congruent to KL, then we can plug in x for one of the equations and multiply that answer by 2 so we can find the measurement of JL.

JK = 2(6) + 4

JK = 12 + 4

JK = 16

16 * 2 = 32

So, the measurement of JL is equal to 32.

WILL GIVE BRAINLIEST. Billy ordered a pizza with a crust that is 10π inches long. What is the area of the pizza?

Answers

Answer:

~31.42

Step-by-step explanation:

I multiplied 10 x pi and it gave me 31.4159265359 and I rounded up to 31.42

A right triangle has side lengths 5 , 12 , and 13 as shown below. Use these lengths to find tanX , cosX , and sinX

Answers

Answer:

[tex]$\text{sin}(x)=\frac{12}{13} $[/tex]

[tex]$\text{cos}(x)=\frac{5}{13} $[/tex]

[tex]$\text{tan}(x)=\frac{12}{5} $[/tex]

Step-by-step explanation:

Consider:

[tex]$\text{sin}(x)=\frac{\text{Opposite}}{\text{Hypotenuse}} $[/tex]

[tex]$\text{cos}(x)=\frac{\text{Adjacent}}{\text{Hypotenuse}} $[/tex]

[tex]$\text{tan}(x)=\frac{\text{Opposite}}{\text{Adjacent}} $[/tex]

I will apply adjacent side to angle [tex]x[/tex] as 5. and opposite side to angle [tex]x[/tex] as 12.

So,

[tex]$\text{sin}(x)=\frac{12}{13} $[/tex]

[tex]$\text{cos}(x)=\frac{5}{13} $[/tex]

[tex]$\text{tan}(x)=\frac{12}{5} $[/tex]

tan x  5

         12

sin x   5

         13

cos x 12

         13

this is the correct answer

PLEASE ANSWER ASAP! 48 POINTS!!

IF YOU ANSWER JUST FOR POINTS I'LL REPORT YOU!!!

Explain how solving -7y > 161 is different from solving 7y > -161.

Answers

the first choice has a negative 7 and the second choice has a negative 161 these are both negatives in different places which cause a different reaction

y = − 1/3 x + 2 y = x + 2

Answers

The person above me is correct

find the value of x​

Answers

Answer:

Step-by-step explanation:

5

help me with number 3 pleaseee

Answers

Answer:

$25.65

Step-by-step explanation:

135 (19%)

$25.65

Solve the equation for y.
6 = 4x +9y

Answers

Answer:

y = (6-4x) / 9

Step-by-step explanation:

6 = 4x+9y

Subtracting 4x to both sides

6 - 4x = 9y

Now dividing both sides by 9

We'll get

(6-4x)/9 = y

OR

y = (6-4x) / 9

Answer:

y = 2/3 - 4x/9

Step-by-step explanation:

6 = 4x + 9y

you have to isolate the 9y soo, subtract 4x on both sides

6 - 4x = 9y

now, divide both sides by 9

6/9 - 4x/9 = y

simplify!

2/3 - 4x/9 = y

A glass of cold milk is sitting on the counter, warming up to room temperature. Currently, the milk is 10°C below room temperature. However, that temperature difference is shrinking by 10% every minute. What will the temperature difference be in 14 minutes?

Answers

Answer:

I think it's 8.6 or 1.4

Step-by-step explanation:

Turn 10% into a decimal form... .10

.10 x 14 = 1.4

10 - 1.4 = 8.6

Idk oof

Answer:

10.7 Celsius

Step-by-step explanation:

I did it on IXL

A rational number is the..........

of two........

while a rational expression is a......... of two.........​

Answers

Answer:

A rational number is the QUOTIENT of two INTEGERS while a rational expression is a QUOTIENT of two FUNCTIONS.

Hope this helps!

:)

Answer:

quotient

integers

quotient

functions

Step-by-step explanation:

sara and megan wanted souvenirs when on vacation. sara bought 3 magnets and 4 picture frames for $41. megan bought 2 magnets and 5 picture frames for $39. how much does magnet cost? how much does the picture frames cost?

Answers

Answer:

idk

Step-by-step explanation:

sorry

What is the graph of y^2/16+x^2/9=1

Answers

Answer:

is c

Step-by-step explanation:

use math    way if you have any doubts

Answer:

the correct graph is graph c.

Step-by-step explanation:

i did the asignment on edg

Surface area and volume

Answers

I am pretty sure the answer is find s

D.

1. 3x + 7 = 13 (x = -2; x = 2; x = 5)

Answers

Answer: x=2

Step-by-step explanation:

I am assuming you are asking which x fits the equation. To see if x works for the equation, you would plug it in.

x=-2

3(-2)+7=13

-6+7=13

1≠13

x=2

3(2)+7=13

6+7=13

13=13

x=5

3(5)+7=13

15+7=13

22≠13

I need help like frfr
Before today over . Someone help me

Answers

I think (I’m not fully sure) it might be 40

Answer:

The answer is 49

Step-by-step explanation:

PLEASE MARK AS BRAINLIEST

HELPING ON OTHER OF YOUR PROBLEMS

A bag contains 2 red, 5 blue, and 7 yellow marbles. Find the probability of drawing a yellow or a red.

Answers

Answer:

drawing a red marble would be 2 in a 14 or 1/7 chance n drawing a yellow would be 1/2.

The probability of drawing a yellow marbles is 1/2

What is probability ?

Probability means the quality or state of being probable; the extent to which something is likely to happen or be the case

We have,

Bag contains marbles

Red=2

Blue=5

Yellow=7

Total marbles in bag = 2+5+7=14

The total number of ways of selecting one marble out n(s) = 14[tex]C_{1}[/tex]

                                                                                                      = 14 ways

Let E be the event of selecting yellow marbles

Since, the bag contains 7 yellow marbles

one yellow marble can be draw from 7 yellow n(E) =7[tex]C_{1}[/tex]

                                                                                        = 7 ways

We know the formula,

P(E)= n(E)/n(s)

       = 7/14

        = 1/2

Hence, the probability of drawing a yellow marbles is 1/2

To learn more about probability from here

https://brainly.in/question/3144050

#SPJ2

Two angles are supplementary. If the m∠A is five times the sum of the m∠B plus 7.2°, what is m∠B?

Answers

Answer:

m∠B = 24°

Step-by-step explanation:

m∠A + m∠B = 180°

m∠A = 5 ( m∠B + 7.2 )

5 ( m∠B +7.2 ) + m∠B = 180

5m∠B + 36 + m∠B = 180

6m∠B = 180 - 36

6m∠B = 144

m∠B = 24°

PLEASE HELP!!!!!!!!!

Answers

x = 60 degrees
y = 50 degrees

Find three solutions for the linear equation 4x −3y = 1, and plot the solutions as points on a coordinate plane.

Answers

Answer:

(1, 1), (2, 2.333) and (3, 3.666).

Step-by-step explanation:

To find solutions for this equation, we can just choose values for x and then calculate the values of y.

So, for x = 1, we have:

4*1 - 3y = 1

3y = 3

y = 1

For x = 2, we have:

4*2 - 3y = 1

3y = 7

y = 2.333

For x = 3, we have:

4*3 - 3y = 1

3y = 11

y = 3.666

The points we need to plot is (1, 1), (2, 2.333) and (3, 3.666).

Check the image attached for the plot.

Three solutions for the linear equation are: (0, -0.333), (1,1) and (3, 3.667).

The graph is given at the end of this answer.

-----------------------------

The equation is:

[tex]4x - 3y = 1[/tex]

In slope-intercept formula, we have that:

[tex]3y = 4x - 1[/tex]

[tex]y = \frac{4}{3}x - \frac{1}{3}[/tex]

Thus, the solutions are given by the following pairs of points: [tex](x, \frac{4}{3}x - \frac{1}{3})[/tex]

-----------------------------

For x = 0, we have that [tex]y = \frac{4}{3}(0) - \frac{1}{3} = -\frac{1}{3} = -0.333[/tex], thus, one solution is (0, -0.333).

For x = 1, we have that [tex]y = \frac{4}{3}(1) - \frac{1}{3} = \frac{3}{3} = 1[/tex], thus, one solution is (1,1).

For x = 3, we have that [tex]y = \frac{4}{3}(3) - \frac{1}{3} = \frac{11}{3} = 3.667[/tex], thus, one solution is (3, 3.667).

These solutions are labeled on the graph given at the end of this answer.

A similar problem is given at https://brainly.com/question/16768849

Sally wants to purchase a new car, and its price is $35,000. Since Sally does not have enough money, she would like to get a loan from Sun Trust Bank with a simple interest rate of 4.5% for 6 years. What is the final cost of her new car?

Answers

Answer:

The formula to calculate the final cost of Sally's new car:

C = 35000 x (1 + 4.5/100)^6 = 45579.1 dollar

Hope this helps!

:)

Which of the following equations is an example of a direct variation?

y = 3

x + 2y = 6

x = 4

y = 3.14 x

Answers

Answer:

ummm, I'm not sure but I think that it's the second or the last one. ‍

write an equivalent ratio to 2:7​

Answers

Answer:

4:14

Step-by-step explanation:

Please help me I need this done not a lot of work but please get it done with good credit for good rating and reward!

Answers

Answer:

1. Diameter

2. more than 1 but less than 2

3. ans: 3.14

4. ans: 3.142

5. 33.7 inches

6. a) 100.57 b) 2.36 (2 dp) c) 236.66 d) 113.14 e)20.11

f) 86.11

3. Find the volume of the pyramid.
7 cm
3 cm
1 cm

Answers

Answer:

7

Step-by-step explanation:

V=lwh

3=7·3·1

3=7

Formula to find the surface area of a triangular prism

Answers

Step-by-step explanation:

In the mensuration of a triangular prism we can find the total surface area by solving for the areas of  individual shape.

The triangular prism consist of

1. three rectangular surfaces

2. two triangular surfaces.

Hence the total surface area is the sum of the areas of the rectangular surface

= [tex](l* w) +( l*w)+(l*w)\\[/tex]

and the sum of all areas of triangular surfaces

= [tex](\frac{1}{2}bh) + (\frac{1}{2}bh)[/tex]

In summary just find the area of each shape and add them together.

Use right triangle ABC. The figure is for reference only and is not drawn to scale. In a 30-60-90 triangle, the shorter leg had a length of 8. What is the length of the longer leg?

Answers

Answer:

In a 30 60 90 triangle, the longer leg = shorter leg * square root (3)

longer leg = 8 * square root (3) = 8 * 1.7320508076

= 13.8564064606

Step-by-step explanation:

WILL MARK BRAINLIEST

Prism M and pyramid N have the same base area and the same height. Cylinder Pand prism Q have the same height and the same base
perimeter. Cone Z has the same base area as cylinder Y, but its height is three times the height of cylinder Y.
The figures_____and_____have the same volume.
1.)
Prism M
Cylinder P
Cone Z
2.)
pyramid N
Prism Q
Cylinder Y

Answers

Answer:

Answer Cone Z and Cylinder Y.

Step-by-step explanation:

The relationship between the volume of the cone and the volume of the cylinder with the same height and same base is the volume of the cone is 1/3 of the volume of the cylinder.

hope that helps love!

HELP ILL GIVE YOU 15 POINTS !!!!!! ill mark you as brainliest too if its right

Answers

Answer:

B.

Step-by-step explanation:

[tex]\frac{2}{5} *4=\frac{8}{5}[/tex][tex]x[/tex]

[tex]\frac{2}{5} *-8=-\frac{16}{5}[/tex]

Answer:

b

Step-by-step explanation:

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