A circle has an area of 20cm. What is its diameter?

Answers

Answer 1

Answer:

should be 5.05

Step-by-step explanation:

rounded to nearest hundredth

Answer 2

Answer:

5.02

Step-by-step explanation:

Formula for area= π x r^2

(π is 3.14)

Formula for diameter= 2 x r

So all you basically have to do is go backwords with the first equation

20/π=6.36

Now you have 6.36, though you need to go even further back because of the ^2

√6.36=2.51

Now we have the radius, so stick that into the diameter formula

2 x 2.51

5.02 is the diameter :)


Related Questions

4) In each of the following figures, find the value of the angles a,b,c,x,y,and z ​

Answers

Step-by-step explanation:

due to the principle of identical angles in parallel lines when intercepted by an inclined line,

y = 49°

the angles above an intersected line are the same as below that intersected line (just mirrored left-right).

and at the bottom, the angles an insecticide line has with one line must be the same as with another line that is parallel to the first line.

so, both indicated angles are the same as the original angle on the top : 49°

Can someone please answer this, ill give you brainliest Would be very appreciated.

Answers

Answer:

(4, 0) and (-2, 0)(1, -9)(0, -8)

Step-by-step explanation:

Finding the x-intercepts :

y-value of the x-intercept is 00 = (x - 4)(x + 2)x - 4 = 0 ⇒ x = 4x + 2 = 0 ⇒ x = -2The x-intercepts are : (4, 0) and (-2, 0)

Finding the vertex :

Expanding the function ff(x) = (x - 4)(x + 2)f(x) = x² - 4x + 2x - 8f(x) = x² - 2x - 8Vertex = (h, k)h = -b/2a = -(-2)/2(1) = 1k = (1)² - 2(1) - 8k = 1 - 2 - 8 = -9The vertex is : (1, -9)

Finding the y-intercept :

Substitute x = 0 in the functionf(0) = 0² - 2(0) - 8f(0) = -8The y-intercept is : (0, -8)
Function: f(x) = (x- 4)(x + 2)1) What are the x-intercepts of the graph?

In order to find x-intercept, the f(x) or y will be 0

=================

(x-4)(x + 2) = 0

(x-4) = 0, (x + 2) = 0

x = 4, x = -2

x intercepts: (4, 0) and (-2, 0)

2) What is the ordered pair of the vertex?

In order to find vertex use the formula: x = -b/2a

y = (x-4)(x + 2)

y = x² -4x + 2x -8

y = x² - 2x -8

Now find x-coordinate of vertex:

x = -(-2)/2(1)

x = 2/2

x = 1

y coordinates: (1-4)(1 + 2) =  -9

Ordered pair of vertex: (1, -9)

3) What is the y intercepts of the graph?

In order to find y intercept, insert x = 0

y = (0-4)(0 + 2)

y = -8

y intercept: (0, -8)

find the volume pleaseeeee

Answers

I believe it’s 1,080 if you had to multiply 6 x 180
180 cubic inches.
Volume = length * width * height
= 10 * 3 * 6
= 180 cubic inches

Ms. Remi is planning a dance recital for her students. The maximum duration for the recital is 120 minutes. Group dance performances last 8 minutes and solo dance performances last 3 minutes. x = the number of group dances on the program y = the number of solo dances on the program Which inequality in standard form represents this situation?
A) 3x + 8y ≥ 120
B) 3x + 8y ≤ 120
C) 8x + 3y ≥ 120
D) 8x + 3y ≤ 120

Answers

The inequality in a standard form that represents the given statement will be equal to 8x + 3y ≥ 120.

What is an equation?

Mathematical expressions with two algebraic symbols on either side of the equal (=) sign are called equations.

This relationship is illustrated by the left and right expressions being equal. The left-hand side equals the right-hand side is a basic, straightforward equation.

As per the given data available in the question,

The maximum duration of the recital is 120 minutes.

Time for group dance = 8 minutes.

Time for solo dance = 3 minutes.

Then, the inequality will be,

8x + 3y ≥ 120

Here, x is the number of group dances on the program, and y is the number of solo dances on the program.

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What is the length of ZA? ZA = 3cm ZA = 4cm ZA = 5cm ZA = 6cm

Answers

Answer:

please what is the correct question

Answer: its the last one

Step-by-step explanation:

Find the maximum value on (0, infinity) for f(x)=7x-2xlnx

Answers

f'(x)>0 for all x>0. Therefore f(x) is strictly increasing on the inverval (0,∞).

How to obtain the maximum value of a function?

To find the maximum of a continuous and twice differentiable function f(x), we can firstly differentiate it with respect to x and equating it to 0 will give us critical points.

f(x) = max{0,x} then f(x)=0 if x<0 and f(x)=x if x≥0.

f(x)=7x-2xlnx

When x tends to -∞, f is the constant function zero, therefore limit n tends to infinity f(x) = 0.

When x tends to ∞, f(x)=x and x grows indefinitely. Thus limit n tends to infinity f(x) = infinity.

f is differentiable if x≠0. If x>0, f'(x)=1 (the derivative of f(x) = x and if x<0, f'(0)=0 (the derivative of the constant zero).

In x=0, the right-hand derivative is 1, but the left-hand derivative is 0, hence f'(0) does not exist,

f'(x)>0 for all x>0. Therefore f(x) is strictly increasing on the inverval (0,∞).

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Emma enjoys flying kites. her red kite has a maximum altitude of 117.46 meters, and her black kite has a maximum altitude of 362.26 feet. one foot is the same as 0.3048 meters. which kite has a higher maximum altitude, and how many feet higher is it? a. the black kite has a maximum altitude 74.62 feet higher than the red kite. b. the black kite has a maximum altitude 33.66 feet higher than the red kite. c. the red kite has a maximum altitude 23.11 feet higher than the black kite. d. the red kite has a maximum altitude 7.04 feet higher than the black kite.

Answers

The red kite has a maximum altitude 23.11 feet higher than the black kite.

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

1 feet = 0.3048 meters, hence:

117.46 m =  117.46 m * 1 ft per 0.3048 meter = 385.37 feet

Difference in height = 385.37 feet - 362.26 feet = 23.11 feet

The red kite has a maximum altitude 23.11 feet higher than the black kite.

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1/5 x 1/5 x 1/5 x 1/5

Answers

I believe the answer to be 0.0016

Using two or more complete sentences, describe how to find the general rule for the geometric sequence with
a
4
=
3
and
a
6
=
3
16
. In your final answer, include all of your calculations.

Answers

Answer:

123x222

Step-by-step explanation:

because2=2 and 4=4

The two expressions below have the same value when rounded to the nearest hundredth. log subscript 5 baseline b. log subscript 9 baseline 48 what is the approximate value of log b to the nearest hundredth? 0.93 1.23 9.16 65.53

Answers

The value of log b to the nearest hundredth is 1.23. The correct option is the second option - 1.23

Evaluating logarithm

From the question, we are to determine the value of log b to the nearest hundredth

From the given information

[tex]log_{5}b = log_{9}48[/tex]

But,

[tex]log_{9}48 =1.76186[/tex]

∴ [tex]log_{5}b =1.76186[/tex]

By one of the laws of logarithm

∴ [tex]b =5^{1.76186}[/tex]

b = 17.0407

Then,

log b = log(17.0407)

= 1.2315

∴ log b ≅ 1.23

Hence, the value of log b to the nearest hundredth is 1.23. The correct option is the second option - 1.23

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Answer:

The answer is 1.23

Step-by-step explanation:

Trust me I took the edge quiz 2022

Select the correct answer from each drop-down menu. The table below represents the function f, and the following graph represents the function g. x -6 -5 -4 -3 -2 -1 0 1 f(x) 8 -2 -8 -10 -8 -2 8 22 Complete the following statements. The functions f and g have . The y-intercept of f is the y-intercept of g. Over the interval [-6, -3], the average rate of change of f is the average rate of change of g.

Answers

Answer:

Complete the following statements.

The functions f and g have the same axis of symmetry.

The y-intercept of f is greater than the y-intercept of g.

Over the interval [-6, -3], the average rate of change of f is less than the average rate of change of g.

Answer:

First blank: The same axis of symmetry

Second blank: Greater than

Third blank: Less than

Step-by-step explanation:

PLATO

Please mark Brainliest <( ¨ )

Patrick is designing a large stained glass window for the library. If the area of the window is 36 feet, how long is each side

Answers

Divide 36 by 4 sides of the window. = 9 square feet.

There are 10 balls in a bag numbered from 1 to 10. Three balls are selected at random without replacement.
A. How many different ways are there of selecting the three balls?
B. What is the probability that one of the balls selected is the number 5?​

Answers

Answer:

A=1000

B=3.33

Step-by-step explanation:

I think?

A. The total numebr of ways or permutaion selecting three balls from the bag without replacement is 720.

B. The probability of getteing a ball or selecting a ball marked with number five is [tex]\frac{1}{5}[/tex].      

What is permutation?

A permutation is a mathematical technique that determines the number of possible arrangements in a set when the order of the arrangements matters.

What is th eformula for permutation?

The formula for the permutation is

[tex]^{n} P_{r} = \frac{n!}{(n-r)!}[/tex]

Where,

n is the total number of objects

r is the total number of selected students

[tex]^{n} P_{r}[/tex] is the total number of permuations

What is probability?

The probability is the measure of the likelihood of an event to happen. It measures the certainty of the event. The formula for probability is given by; P(E) = Number of Favourable Outcomes/Number of total outcomes.

According to the given question.

Total number of balls in a bag = 10

A. Three balls are selected at a randow.

Since, repetition is not allowed or replacement is not allowed.

So, the number of ways selecting the first ball is 10

Number of ways selectiong the second ball is (10-1)

Number of ways selecting the third ball is (9-1)

Therefore,

The total number of ways or permutation selecting three balls from a bag

= [tex]^{10} P_{3}[/tex]

[tex]= \frac{10!}{(10-3)!}[/tex]

[tex]= \frac{10!}{7!}[/tex]

[tex]=\frac{10\times 9\times 8\times 7!}{7!}[/tex]

[tex]= 10\times 9\times 8[/tex]

[tex]= 720[/tex] ways

Hence, the total numebr of ways or permutaion selecting three balls from the bag without replacement is 720.

B.  

Total number of ball in a bag = 10

Total number of ball in a bag marked with 5 = 1

Thereofre,

the probability of selecting a ball marked with number 5

= [tex]\frac{total\ number\ of \ balls\ marked\ with \ number\ five\ }{total\ number\ of\ balls\ in\ a \ bag}[/tex]

[tex]= \frac{1}{5}[/tex]

Hence, the probability of getteing a ball or selecting a ball marked with number five is [tex]\frac{1}{5}[/tex].      

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A month of the year is chosen at random. What is the probability that the month starts with the letter J or the letter M

Answers

Answer:

hope it's helpfull...... ;)

Zahara asked the students in her class their gymnastic scores and recorded the scores in the table shown below:

Gymnastic Scores


Score Number of Students
0 1
1 1
2 2
3 6
4 4
5 3
6 2


Based on the table, what is the mean gymnastic score?

Answers

Answer:

It would be 3.5

Step-by-step explanation:
1+1+2+6+4+3+2

so the mean is 3.5

Find the measure of

Answers

Step-by-step explanation:

angles a,f,g form a triangle

sum of angles in ∆ = 33 + 112+ a = 180

145 + a = 180

a = 35°

The temperature was 6° C.
By how much has it fallen if it is now -5° C?

Answers

Answer:

11 °C

Step-by-step explanation:

Initial temperature = 6 °CFinal temperature = - 5°CChange in temperature

= 6 - (-5)

= 6 + 5

= 11 °C

Hope it helps you in your learning process.

Answer:

The temperature has fallen by 11° C.

Step-by-step explanation:

6° C - (-5° C) = 11° C.

The coordinates of the point SS are (7,6)(7,6) and the coordinates of point TT are (-2,6).(−2,6). What is the distance, in units, between the point SS and point T?T?

Answers

Answer:

9 units

Step-by-step explanation:

In the points S and T, the y- co ordinate are unchanged. So, the line joining S and T are parallel to x -axis.

So, the distance will be the sum of obsolute value of the x- coordinates.

 Distance = I 7I + I - 2I

                 = 7 + 2

                 = 9 units

More common denominators with Aleks

Answers

Answer:

1/10

Step-by-step explanation:

1/2 - 2/5

common denominator is 10 (2x5)

5/10 - 4/10 = 1/10

Answer Number 2 pleaseeee

Answers

Answer:

Yes

Step-by-step explanation:

Which expressions result in a product that has a best estimate of 60? Select all that apply. A. 0 . 63 × 104 B. 32 . 4 × 21 C. 1 . 1 × 58 D. 0 . 18 × 27 E. 6 × 9 . 82

Answers

The expression 6×9.82 is the result of a product that has the best estimate of 60 option (E) is correct.

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.

We have value of quantity is 60

A) 0.63×104 = 65.52

B) 32.4×21 = 68.04

C) 1.1 × 58 = 63.8

D) 0.18×27 = 4.86

E) 6×9.82 = 58.92

The value of 6×9.82 is 58.92 which is best estimate of 60.

Thus, the expression 6×9.82 is the result of a product that has the best estimate of 60 option (E) is correct.

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Answer: a b e

Step-by-step explanation:

The radius of a circle with area A is approximately $\sqrt{\frac{A}{3}}$ . The area of a circular mouse pad is 48 square inches. Estimate its radius to the nearest tenth

Answers

The radius of the circular mouse pad is 3.91 inches if the area of a circular mouse pad is 48 square inches.

What is a circle?

It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)

We have:

The area of the circular mouse pad = 48 square inches

The area of the circle:

[tex]\rm A = \pi r^2[/tex]

[tex]\rm 48 = \pi (r)^2[/tex]

Take π = 3.14

r = 3.909 inches ≈ 3.91 inches

Thus, the radius of the circular mouse pad is 3.91 inches if the area of a circular mouse pad is 48 square inches.

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Does the infinite geometric series diverge or
converge? Explain.
5 + 20 + 80 + 320 +

Answers

Answer:

Diverge

Step-by-step explanation:

Infinite geometric series:   In infinite geometeric series, if the common ratio 'r' is in between the interval -1 < r < 1, then it converges. If the common ratio 'r'  is is not in the interval -1 < r < 1, then it diverges.

5 + 20 + 80 + 320 + .....

   [tex]\sf Common \ ratio = \dfrac{second \ term}{first \ term}\\[/tex]

        [tex]\sf r = \dfrac{20}{5}\\\\ r = 4[/tex]

r = 4 is not  in the interval -1 < r < 1. So this infinite geometric series diverges.

Help me please asap!!! NOTE : PLEASE LOOK AT THE 3 PICTURES & I NEED A EXPLANATION

Answers

Step-by-step explanation:

3/5 - 1/3 = 4 /15

5/6 - 2/3 = 5/6 - 4/6 = 1/6

7/9 - 2/3 = 7/9 - 6/9 = 1/9

5/8 - 1/6 = (15 - 4) /24 = 11/24

(All the above ones I have taken common factor and subtracted them)

5 x 9/10 = 45/10 = 9/2 (simplified)

2/7 x 3 = 6/7

3 x 2/15 = 6/15

4x 2/6 = 8/6 = 4/3 (simplified form)

Hope this helps!!!

HELP ASAP. Worth 10 points

Judy studied for 7/12 of an hour, and her sister studied for 2/3 of an hour. About how much time did they spend studying altogether?
They studied for half an hour.
They studied for an hour.
They studied for a little less than an hour.
They studied for a little more than an hour.

Answers

Answer:

They studied for a little more than an hour?

Step-by-step explanation:

7/12 of 60 Mins is 35 mins and 2/3 is 40 mins 40+35=75 mins

which is a little more than an hour, 15 mins more to be precise.

A die is being rolled. Find the probability of rolling less than a 3.​

Answers

Answer:  2/6

Step-by-step explanation:

Probability is nothing but the

number of favourable outcomes / number of total outcomes

Image attached:- Solve if you can!

Answers

PEMDAS/BODMAS:
This is a set of rules for order of expressions that is taught to a large number of students at the advance arithmetic and early algebra phases of their schooling. For the expression given in the question it directs:
6/2(1 + 2) = 6/2(3) —Do what is in the parentheses first.
= 6/2(3) — No change because next come handling exponents, of which there are none.
= 3(3) —Do multiplications and divisions in order from left to right.
= 9. —Repeating previous step since there is one division and one multiplication.
There are problems with this set of rules because they were designed for advanced arithmetic and early algebra. They do not handle more advanced expressions. For advanced arithmetic, typically all operations are expressed explicitly, so that 6/2(1 + 2) would not be given, but instead 6/2 × (1 + 2). We will see in the next convention how this distinction can be important, and standard PEMDAS/BODMAS do not distinguish the two expressions

ANSWER FAST, WILL MARK!!!


Answers

Answer:

(2, 3)

Step-by-step explanation:

The solution of two equations on a graph is where they intersect. In this case (2, 3) is the answer.

Answer:

(x,y) = (2,3) so C?

Step-by-step explanation:

=> y = x/2+2

=> y = x + 1

from that info, you can tell y = y, meaning x/2 + 2 = x+1

solving:

=> x/2 + 2 = x + 1

=> 1/2x +2 = x + 1

=> -x             -x

=> - 1/2x + 2 = 1

=> -2                -2

=> -1/2x = -1

=> * 2/-1   * 2/-1

=> x = 2

solve using substitution now:

(let's plug it in to the easiest y = statement)

=> y = x+1

=> y = 2 +1

=> y = 3

(2,3) is your answer

30 POINTS!!!!! HELP QUICK
Find the area of the shaded region.

Use 3.14 for pi.

Answers

The area of the shaded region is 994.74 square in if the area of the circle is 1384.74 square in and the area of the triangle is 390 square in.

What is a circle?

It is described as a set of points, where each point is at the same distance from a fixed point (called the center of a circle)

As we know, the area of the circle is given by:

A = πr²

r = 21 in

A = 3.14(21)² = 1384.74 square in

Area of the triangle:

a = (39)(20)/2 = 390 square in

The area of the shaded region = 1384.74 - 390 = 994.74 square in

Thus, the area of the shaded region is 994.74 square in if the area of the circle is 1384.74 square in and the area of the triangle is 390 square in.

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find the two square roots of the number 16

Answers

Answer:

4

Step-by-step explanation:

square root of 16 is 4,

4*4 = 16

Answer:

The square root of 16 is 4.

Step-by-step explanation:

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