If the area of a circle is
7.7 cm2, what is the
circumference of the
circle? (I need a step-by-step answer for further understanding please!!)

Answers

Answer 1

Answer:

Since area =7.7

[tex]area = \frac{22}{7} {(r)}^{2} \\ {(r)}^{2} = 2.45 \\ r = 1.57[/tex]

Then the circumference is

[tex]c = 2pi\times r \\ = 2 \times 3.14 \times 1.57 \\ = 9.859[/tex]


Related Questions

Find the magnitude and direction of the vector WZ: W(15, 25) and Z(10,-6).

Answers

Answer:

..

Step-by-step explanation:.

Find the circumference of a circle with a radius of 9 meters. Use 3.14 for π. Round to the nearest hundredth if necessary.

Answers

Answer:56.52

Step-by-step explanation:

circumference = π*d

d=2r

d=2*9

d=18

3.14*18=56.52

Answer:

C =2ΠR

=2 x (3.14)( 9)

=56.52meters

To the nearest​ millimeter, a cell phone is 105 mm long and 69 mm wide What is the ratio of the width to the​ length?

Answers

Answer:

69

Step-by-step explanation:

width = about 69% of the length

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HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Answers

Answer:

C

Step-by-step explanation:

I guessed hehehegshsbsbs

Of the students at I.S. 59, 230 signed up for the school picnic. That was 50% of all students in the school. How many students attend I.S. 59

Answers

Answer: 460 students

Step-by-step explanation:

Based on the information given in the question, let the total number of students that attend I.S. 59 be represented by x.

Since we've been given the information that 230 signed up for the school picnic which was 50% of all students in the school. Then, the students in the school will be:

= 50% of x = 230

0.5 × x = 230

0.5x = 230

x = 230/0.5

x = 460

Therefore, 460 students attend the school.

5. How many times smaller is the
value of 0.486 compared to 48.6?

Answers

It is 100 times smaller or 0.486 is 1/100th of 48.6

Answer:

100 times smaller

Step-by-step explanation

48.6 / 0.486 = 100

HELP WILL GIVE BRAINLIST

Answers

Answer:

 

Simplify  {4}^{2}42  to  1616.

-16+2\times -4\times -5-2\times {2}^{3}−16+2×−4×−5−2×23

 

Simplify  2\times -42×−4  to  -8−8.

-16-8\times -5-2\times {2}^{3}−16−8×−5−2×23

 

Simplify  8\times -58×−5  to  -40−40.

-16-(-40)-2\times {2}^{3}−16−(−40)−2×23

 

Use Product Rule: {x}^{a}{x}^{b}={x}^{a+b}xaxb=xa+b.

-16-(-40)-{2}^{4}−16−(−40)−24

 

Simplify  {2}^{4}24  to  1616.

-16-(-40)-16−16−(−40)−16

 

Remove parentheses.

-16+40-16−16+40−16

 

Simplify  -16+40−16+40  to  2424.

24-1624−16

 

Simplify.

8

Step-by-step explanation:

hope it helps :)

PLLLLLLS HELP!! 48 Points!!!
(06.06) A rectangle with width of 3. There is a vertical line that splits rectangle into two sections with different lengths. One length is x the other is 4. 3(x + 4) represents the area of the rectangle above. Which expression below is equivalent by the Distributive Property? 3x+12 (3 + x) + 4 (x + 4) ⋅ 3 3x + 4

Answers

3x+12 I believe hope that helps you

Answer:

3x+12

Step-by-step explanation:

I took the quiz

SOMEONE HELP ME PLEASE

Answers

Answer:

First option,   [tex]\frac{-2y+5x}{3x-2y}[/tex]

Step-by-step explanation:

Simplify the fraction. To make the process of solving easier, we can multiply both the numerator and denominator by x and y to get rid of the fractions as seen below. This is because the variables in the denominators of the fractions will cancel out with either the matching x or y in the numerators.  

[tex]\frac{\frac{-2}{x} +\frac{5}{y} }{\frac{3}{y}-\frac{2}{x} } \\=\frac{(\frac{-2}{x} +\frac{5}{y})xy }{(\frac{3}{y}-\frac{2}{x})xy }\\=\frac{-2y+5x}{3x-2y}[/tex]

Thus, the first option is correct.

(a+6)(a-?)=a^2+?a-12

HELP ASAP
(^2 means squared)

Answers

Answer:

(a+6)(a-2)=a^2-4a-12

Step-by-step explanation:

Yesterday, Tran charged 70$ to babysit for 5 hours. If Tram charges a constant fee per hour when she babysits, which statements are correct


A. Tram charges $140 when she babysits 10 hours.

B. Tram charges $1.25 when she babysits for 9 hours.

C. Tram charges $56 when she babysits for 8 hours

D. Tram charges 20$ when she babysits for 4 hours.

E. Tram charges $14 per hour that she babysits.

D. Tram charges 7$ per hour that she babysits.

Answers

Answers:
A) Tran charges $140 when she babysits 10 hours

E) Tran charges $14 per hour that she babysits.

reasoning:

$70 divided by 5 hours to get how much she gets paid by the hour. 70 divided by 5 = $14; she charges $14/ hour. $14 times 10 hours = $140. these two statements are correct.

Answer:

A & E

Step-by-step explanation:

divide 70 by 5.

you get 14. meaning she charges $14 per hour

14 x 10 gives you 140.

In ⊙E, what is AC?
in need of answers

Answers

Answer:

d

Step-by-step explanation:

i looked up the answers

The length of AC is 6.4 unit.

The correct option is C.

We have the figure from which we can say that

BD is the diameter which is

= 4.8 + 1.6

= 6.4 unit long.

Now, AC is the chord.

As, the distance between the two opposite point the the surface of circle would be same.

Then, the length of AC = length of BD

Thus, the length of AC is 6.4 unit.

Learn more about Circle here:

https://brainly.com/question/29142813

#SPJ2

An escalator in a department store carries people a vertical distance of 14 feet between floors. How
long is the escalator if it makes an angle of 30° with the ground?

Feet : ____

Answers

The escalator -- or hypotenuse-- is
40
feet long

Hope this helps!!!

what is
1/2 times 1/8

Answers

Answer:

the answer is 1/16

Help me in this question please

Answers

Answer:

m<5= m<3

m<11= m<14

m<16= m<9

help meeee ASAP
For one English test, Mary had 15 questions correct. She received a 72% on her test.

How many questions were on the test?

Answers

Answer: 21 questions

Step-by-step explanation:

Turn it into a number sentence.

72% of x amount of questions is 15

0.72(x) = 15. Divide both sides by 0.72

x= 20.83333 round to nearest whole number

x= 21 questions

Given: p || q, and r || s.

Answers

Answer:

I did the figure

mark brainliest if comfortable :)

A scale drawing shows a circular fountain with a diameter of 12 units. The actual fountain has a diameter of 60 feet. Select all the possible scales that could be used for the drawing.

Answers

Answer:i think its 70 if im wrong im very sorry

Step-by-step explanation:

A store pork sold at 7.26 for 2 pounds and chicken sold at 6.65 for 5 pounds , which has a higher unit price

Answers

Answer:

the pork has a greater unit rate of $3.63

Step-by-step explanation:

You divide each number so that you denominator is one because it is a unit rate.

AA, SAS, SSS or not similar ?

Answers

I believe not? I’m sooo sorry if it’s wrong

PLEASE HURRY WILL GIVE BRAINLIEST The greatest common factor of each term in the expression 20x -16xy is 4x. Which choice shows expression written as a product?PLEASE HURRY WILL GIVE BRAINLIEST

Answers

Answer:

it is the second one:

4x(5-4y)

For any positive numbers a,b, and d, with b not equal to 1, log base b (a/d) = A. Log base b a * log base b d B. Log base b a + log base b d C. Log base b a - log base b d D. D * log base b a

Answers

Answer:

C. Log base b (a) - Log base b (d)

Step-by-step explanation:

In logarithm, log means index or exponent. It can be explained with following example. Consider 2^5 = 32

here index = log = 5 so you can write the log of 32 = 5

Consider 64/16 = 4

now 64 = 2^6 and 16 = 2^4

We can write log 2(64) = 6 and log2(16)=4

Now log 64/16= log 4= 2

Also log2(64)-log2(16)=6-4=2

Therefore

Log base b (a/d) = Log base b (a) - Log base b (d)

An artist builds a sculpture out of metal and wood that weighs 14.9 kilograms. 3/4 of this weight is metal, and the rest is wood. How much does the wood part of the sculpture weigh? (no decimals)

Answers

Answer:Weight of wood part of the sculpture  (no decimals) =4kg

Step-by-step explanation:

Weight of sculpture containing metal and wood   = 14.9 kg

weight of metal =3/4 x 14.9 kg =11.175kg

weight of wood =Entire sculpture − weight of metal

 = 14.9 kg−11.175kg

  =3.725kg

Rounding up to remove decimals  we have that Weight of wood part  =4kg

Plzzz help Y=-5x+21 I really need help and can you show the steps too?

Answers

Answer:

x = 3

Step-by-step explanation:

use the substitution method

since y = 6 fill in 6 for y in y = -5x + 21

6 = -5x + 21

subtract 21 from both sides

-15 = -5x

divide each side by -5

3 = x

hope this helps :)

Jackson has a table with a square top and he wants to buy a circular piece of lace that will cover the entire top of the table. The top of the table has side lengths
of 12 inches, as shown. help?
12 in
12 in
What is the area, in square inches, of the smallest circular piece of lace Jackson could buy? Round your answer to the nearest tenth

Answers

Answer:

226.2

Step-by-step explanation:

I took the test. I hope this helps! :)

The area of the circular lace is required.

The smallest circular piece of lace to cover the entire top of the table is 226.2 inches².

Area of circle

Length of each side of square = 12 inches

The diameter of the circle will be the length of the diagonal of the square from the given figure.

[tex]d=\sqrt{12^2+12^2}\\\Rightarrow d=12\sqrt{2}\ \text{in}[/tex]

Area of a circle is given by

[tex]A=\pi\dfrac{d^2}{4}\\\Rightarrow A=\pi \dfrac{(12\sqrt{2})^2}{4}\\\Rightarrow A=226.194\approx 226.2\ \text{in}^2[/tex]

Learn more about area of circle:

https://brainly.com/question/12269818

At a restaurant, your bill has a food total of $45.50. Find the amount of an 18% tip on the food total.

Answers

Answer:

The total bill is $53.69 I believe. If you want, you can check your answer by using the steps I provided.

Step-by-step explanation:

1. First, you multiply 18 and 45.50 to get 819.

2. Next, you move the decimal two places to the left to get 8.19

3. Finally, you add the tip ($8.19) on the amount of the food to get our answer ($53.69)

Find the distance between each pair of points. You may want to plot the points. (2 pts each) (2, 3), (7, 3) (-2, 5), (-2, -3) (-8, 5), (-2, 5) (-9, 1), (6, 1)

Answers

Answer:

(1) First pair; (2, 3), (7, 3), d₁ = 5

(2) Second pair; (-2, 5), (-2, -3), d₂ = 8

(3) Third pair; (-8, 5), (-2, 5), d = 6

(4) Fourth pair; (-9, 1), (6, 1), d₄ = 15

Step-by-step explanation:

Given pair of points;

(1)  (2, 3), (7, 3)

(2) (-2, 5), (-2, -3)

(3) (-8, 5), (-2, 5)

(4) ) (-9, 1), (6, 1)

The distance between each pair of points is calculated as follows;

[tex]d = \sqrt{(y_2-y_1)^2 + (x_2-x_1)^2}[/tex]

(1) first pair; (2, 3), (7, 3)

[tex]d_1 = \sqrt{(3-3)^2 + (7-2)^2} \\\\d_1 = 5[/tex]

(2) second pair; (-2, 5), (-2, -3)

[tex]d_2 = \sqrt{(-3-5)^2 + (-2-(-2))^2}\\\\d_2 = \sqrt{(-3-5)^2 + (-2+2)^2} \\\\d_2 = 8[/tex]

(3) Third pair; (-8, 5), (-2, 5)

[tex]d_3 = \sqrt{(5-5)^2 + (-2-(-8))^2}\\\\d_3 = \sqrt{(5-5)^2 + (-2+8)^2} \\\\d_3 = 6[/tex]

(4) Fourth pair; (-9, 1), (6, 1)

[tex]d_4 = \sqrt{(1-1)^2 + (6-(-9))^2}\\\\d_4 = \sqrt{(1-1)^2 + (6+9)^2} \\\\d_4 = 15[/tex]

Alana transformed Figure 1 to Figure 2 as shown below. Which statement accurately describes Alana's transformation?
A
Figure 2 is the image of Figure 1 after a rotation, a reflection, and a translation.

B
Figure 1 and Figure 2 are similar.

C
Figure 2 is congruent to Figure 1.

D
Figure 2 is congruent to a dilation of Figure 1 with a scale factor of 3.

Answers

Answer:

Figure 1 and Figure 2 are similar

Step-by-step explanation:

Answer: A

Step-by-step explanation: Figure 2 is the image of Figure 1 after a rotation, a reflection, and a translation.

.
(01.01)

Evaluate −30 ÷ −6. (1 point)
5
−5
6
−6

Answers

answer: 5 because i said

alexa's friends got her a skydiving lesson for her birthday.

Answers

That’s a pretty sweet gift.

Answer:

ok and what's the question? (*゜ー゜*)

Step-by-step explanation:

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