Explain and correct the error in the example above

Explain And Correct The Error In The Example Above

Answers

Answer 1

Answer:

C = 28.26  cm

Step-by-step explanation:

The figure shows a circle of diameter 9 inches.

The person has taken radius r as 9 inches which is wrong.

The radius must be (9/2) = 4.5 inches, such that,

Circumference = 2πr

= 2×3.14×4.5

= 28.26  cm

Hence, this is the required solution.


Related Questions

A person places $3090 in an investment account earning an annual rate of 3%,
compounded continuously. Using the formula V = Pet, where V is the value of the
account in t years, P is the principal initially invested, e is the base of a natural
logarithm, and r is the rate of interest, determine the amount of money, to the
nearest cent, in the account after 11 years.

Answers

Answer:

$4298.10

Step-by-step explanation:

Using the relation :

V = Pe^rt

P = 3090 ; r = 3% = 0.03 ; t = 11 years

V = 3090 * e^(0.03 * 11)

V = 3090 * e^0.33

V = 3090 * 1.3909681

V = 4298.0915

Amount in the investment after 11 years will be $4298.10

If each quadrilateral below is a rectangle, find the missing measure.

please help :(

Answers

Answer:

m<JMK = 54

m<JKH = 63

m<HLK = 90

m<HJL = 27

m<LHK = 63

m<JLK = 27

Step-by-step explanation:

1. Solve for m<JMK

It is given that (<HMJ) and (<JMK)  form line (HK), meaning that they are supplementary angles. Thus, their degree measures add up to (180), using this one can form the following equation,

(<HMJ) + (<JMK) = 180

126 + (<JMK) = 180

(<JMK) = 54

2. Solve for m<JKH

It is given that the figure is a rectangle, one of the properties of a rectangle is that diagonals are congruent, and the diagonals bisect each other. This means that segments (JM) and (MK) are congruent. Hence, the triangle (JMK) is an isoceles triangle. Therefore, one can use the base-angles theorem, which states that (<MJK) is congruent to (<JKH). Since the sum of angle measures in any triangle is (180), one can form the following equation,

(<JMK) + (<MJK) + (<JKH) = 180

54 + 2(<JKH) = 180

<JKH = 63

3. Solve for m<HLK

As per its definition, the corner angles in a rectangle are always (90) degrees, this property is applicable for the given rectangle. Thus, (<HLK) = 90 degrees.

4. Solve for m<HJL

To solve for this angle, one can use similar logic as they did to solve for (<JKH).  Form the following equation and solve,

(<HMJ) + (<HJL) + (<JHK) = 180

126 + 2(<HJL) = 180

(<HJL) = 27

5. Solve for m<LHK

The vertical angles theorem states that when two lines intersect, the opposite angles are congruent. One can apply this theorem here and say (<JMK) = (<HML). Then, to solve for this angle, one can use the same logic that they used to solve for (<JKH) and (<HJL). Form the equation and solve,

(<HML) +(<LHK) + (<HLJ) = 180

54 + 2(<LHK) = 180

<LHK = 63

6.Solve for m<JLK

To solve for this angle, one can use the same logic that they used to solve for (<LHK). Form the equation and solve,

(<LMK) + (<JLK) + (HKL) = 180

126 + 2(<JLK) = 180

<JLK = 27

Easy math question, many points!

Answers

Answer:

The picture isnt loading......

Step-by-step explanation:

1. (G.SRT.8) Using the given triangle below, determine the value of
X.

A 42
B. 56°
C. 48
D. 37

18
27

Answers

Answer:

(A). 42°

Step-by-step explanation:

Ella has a part-time job selling cupcakes at a cart in the park. She is paid $25 for a shift plus a fee of $0.25 for each cupcake she sells. A) Write and equation that can be used to solve for the total amount, t, Ella earns for working a shift in the park and selling c cupcakes. Ella works a shift and earns $38. B. Use the equation you wrote for part A to solve for the number of cupcakes Ella sold during her shift. Show your work. In the summer, the average number of cupcakes sold during a weekday shift is 36 and the average number of cupcakes sold during a weekend shift is 62. Ella has been given the choice to work a regular schedule of 3 weekday shifts each week or 2 weekend shifts each week. C. Explain which schedule will allow Ella to earn $300 more quickly. Support your answer with mathematical evidence, and state which shift Ella should choose.

Answers

9514 1404 393

Answer:

  A) t = 0.25c +25

  B) c = 52

  C) 3 weekday shifts

Step-by-step explanation:

A. The amount Ella earns is $0.25 per cupcake, so for c cupcakes, that is ...

  0.25c

In addition, she is paid $25, so her total amount she is paid is ...

  t = 0.25c +25

__

B. In order to earn $38, the number of cupcakes sold must be ...

  38 = 0.25c +25

  13 = 0.25c . . . . . . subtract 25

  52 = c . . . . . . . . . multiply by 4

Ella sold 52 cupcakes to earn $38.

__

C. On one of the average weekdays, Ella could be expected to earn ...

  t = 0.25(36) +25 = 34

Then for 3 weekday shifts, her earnings would be 3($34) = $102. (It would take Ella 3 weeks to earn $300.)

On one of the average weekend shifts, Ella could be expected to earn ...

  t = 0.25(62) +25 = 40.50

Then for 2 weekend shifts, her earnings would be 2($40.50) = $81. (It would take Ella 4 weekends to earn $300.)

Ella would earn $300 more quickly by working weekday shifts.

Find the distance between the given points. Round to the nearest tenth. 5,-2 and 1,2.

Answers

Answer:

[tex]4\sqrt{2}[/tex]

Step-by-step explanation:

Use the distance equation

[tex]\sqrt{(x1-x2)^2+(y1-y2)^2}[/tex]

insert values (5,-2)=(x1,y1) and (1,2)=(x2,y2)

[tex]\sqrt{(5-1)^2+((-2)-2)^2}[/tex]

[tex]\sqrt{16+16}[/tex]

[tex]4\sqrt{2}[/tex]

Hope that helps :)

In the 2009 NFL regular season, quarterback Drew Brees of the New Orleans Saints had an average of 293 passing yards per game with a
standard deviation of 74 yards. Between which two values do you expect the middle 95% of his performances to be?
Your answer:
0 0 and 515
219 and 367
O 0 and 415
145 and 441
Clear answer

Answers

Answer:

Drew Christopher Brees (/briːz/;[1] born January 15, 1979) is a former American football quarterback who played in the National Football League (NFL) for 20 seasons.[2] A member of the New Orleans Saints for most of his career, Brees is the NFL leader in career pass completions, career completion percentage, and regular season passing yards, along with being second in career touchdown passes and career pass attempts. He also holds the record of consecutive games with a touchdown pass, breaking the feat held by Johnny Unitas for 52 years.

Given f(x) = 9x + 1 and g(x) = x3, choose
the expression for (fºg)(x).
orange

Answers

Answer  This is the answer in thie screenshot ok

Solve the equation 4(c-3) = 8

What are the two ways to start solving this equation? Choose BOTH ways.

1. Use the distributive property to get 4c- 12 = 8
2. Use the distributive property to get 4c - 3 = 8
3. Add 3 to both sides to get 4c = 11
4. Divide both sides by 4 to get c - 3 = 2
5. Subtract 4 from both sides to get c - 3 = 4​

Answers

Answer:

Use the distributive property to get 4c-12=8

Divide both sides by 4 to get c-3=2

Step-by-step explanation:

Is figure B a scale copy of Figure A ?? Yes Or No

Answers

Answer:

No

Step-by-step explanation:

Figure A has an horizontal length of 2 units and a vertical length of 2 units.

Figure B has an horizontal length of 9 units and a vertical length of 7 units

Thus:

Horizontal length of Figure B / Horizontal length of figure A = 9/2

Horizontal length of Figure B / Horizontal Length of Figure A = 7/2

Thus,

9/2 ≠ 7/2

This implies that their corresponding lengths are not corresponding to each other. Therefore, Figure B is not a scale copy of Figure A.

Use Guauss-jordan elimination to solve the following system of equations.
3x + 5y = 7
6x - y = -8

Answers

Answer:

(-1,2)

Step-by-step explanation:

Write out the system in a matrix

3  5     7

2(6  -1    -8 ) Multiply row two by five and add to row one.

1  0  -1 Multiply row 1 by -6 and add it to row two.

6  -1  -8

1 0 -1

0 -1 -2 Multiply bottom row by -1

1 0 -1

0 1 2

x=-1, y=2

9
It costs only $0.25 per hour to play at Cybernet Cafe, but
there is a one-time membership fee of $25.00. Which
equation could you use to find the total cost D, in dollars,
of playing for n number of hours? Please give explanation and dont just put anything down for points
A D = 25n + 2500
B D = 0.25n + 25
с
D
n = + 25
0.25
Dn= 0.250D + 25)

Answers

Step-by-step explanation:

Fixed Cost = $25 membership fee

Variable Cost = $0.25 per hour of play

Given n is the number of hours played and D is the total cost,

D = Fixed cost + variable cost($0.25 x n hours)

[tex] = 25 + 0.25n[/tex]

Please help this is super confusing

Answers

it's 26 because u count the squares in the poygon

Mary takes out a loan for $ 5 , 000 at a simple interest rate of 3.5 % to be paid back in 36 monthly installments. What is the amount of her monthly payments?

Answers

5000X 3.5/100=175
5000+175=5175/36=143.75

ZABD and ZDBC are supplementary angles.
What is the measure of x?
X = [?]°
7D
110%
AK
>C
C С
B
Angles are not drawn to scale.
Enter

Answers

Answer:

Measure?

Step-by-step explanation:

Could u like explains more pls?

Answer:

x=70°

Step-by-step explanation:

x+110=180 linear pair

x=180-110=70

3) What measurement is
closest to the volume of
the cone in cubic
kilometers?
7 km
14 km
781.3 km
O 435.1 km
O 562.4 km
718.4 km

Answers

Answer:

A) 781.3

Step-by-step explanation:

To find the volume of the cone, you must first find the radius and height of the cone. Which is 7km (radius) and 14km(height).

Next use the formula (Which is in the picture since it's too hard to type out on here)

I also would of explained it but I found it easier just to type it out (In the file attached below)

Finally the answer is 781.3 km

Hope this helps

The scatter plot shows the average price of a major-league baseball ticket from 1997
to 2006.

Use the points (2001, 17.60) and (2002, 18.75) to write the slope-intercept form of equation for the line of fit Baseball Ticket Prices shown in the scatter plot.
Line of Fit:_________


b. Use your equation to tell the price of a ticket in 2009. Is this extrapolation or interpolation?

Answers

Answer:

a) y = [tex]\frac{23}{20}[/tex] x + 13

b)  ticket price in 2009 would be $23.35 by extrapolation

Step-by-step explanation:

Whoever can answer c please help me this is for a grade

Answers

pyramid A: 16 + [tex]8\sqrt{5[/tex]

pyramid B: 400 + [tex]8\sqrt{125[/tex]

pyramid A: 4 by 4= 16 cm.

with a height of 1 and length of 2, we use pythagorean theorem to find height of other surfaces to be square root of 5. area of triangle is 1/2 bh

square root of 5 multiplied by 4 and divided by 2 is 2 root 5

multiply this by 4 sides total for 8 root 5

Add the 8 root 5 to 16

To find pyramid B: use ratio of 25:1 and multiply 16 by 25 to find 400, and root 5 to 125

Cooper weights 20 pounds. When he is an adult dog, he will weigh about 315% of his current weight. Write 315% as a fraction and a decimal.

Answers

Answer:

3.15 and 3 3/20

Step-by-step explanation:

315 ÷ 100 = 3.15

3.15 = 3 3/20

Please mark me brainlest

How many solutions does the system of linear equations represented in the graph below have?


A
No Solution

B
One Solution

C
Infinitely many solutions

D
None of the above

Answers

Answer:

No solution

Step-by-step explanation:

They must intersect  to have one solution. For infinite many solutions, the lines would be on top of each other.

the marked price of an article is 35% more than that of cost price.If the article is sold allowing 15% discount,profit becimes Rs.200.Find the MP and Cp of the article.​

Answers

Answer:

B

Step-by-step explanation:

simplify |x+3| if x>5

Answers

Answer:

[tex]x > 3[/tex]

Step-by-step explanation:

[tex] | x + 3 | where \: x \: not \: equal \: to \: 5 \: and \: greater \: than \: 5 \\ [/tex]

[tex]x + 3 > 5[/tex]

[tex]x > 5 - 2[/tex]

[tex]x > 3[/tex]

what is the common denominator for 3/5 and
what is the common dneominter for 5/8

Answers

Answer:

The common denominator would be 40

Step-by-step explanation:


What is the cost of a shirt? What is the cost of a soda?

Answers

Answer:

Soda = $4  Shirt = $18

Step-by-step explanation:

s- soda

h - shirt

2s+2h = 44 → 2

h + 3h = 30 → 1

1 * 2

2h  + 6h = 60 →3

3 - 2

4h = 16

h = $4

s = $18

Hanna wants to estimate the number of eels in a lake

Answers

The rest of the question???

Somebody please help!!!

Answers

I believe it's 2/3

Hope that helps

find the root of 51 and 21

Answers

Answer:  the root of 51 is 7.141 and the root of 21 is 4.583

Step-by-step explanation:

In ΔBCD, the measure of ∠D=90°, the measure of ∠B=22°, and DB = 44 feet. Find the length of BC to the nearest tenth of a foot.

Answers

Answer: 47.5 ft

Step-by-step explanation:

since this is a right triangle, you can use trig to solve for x:

cos 22° = [tex]\frac{44}{x}[/tex] (cos = adjacent/hypotenuse)

x * cos 22° = 44

x = [tex]\frac{44}{cos 22}[/tex] (plug into calc)

x = 47.5 ft

Determine whether y= 1 is a solution to 10 = y-9.

Answers

Answer:

y = 19

Step-by-step explanation:

19-9=10

y = 19

No, it cannot equal one because if it did the answer would be -8. If you add 10 and 9 it is equal to 19, which means that y=19.

Which graph shows exponential growth?

Answers

Answer:

VTFV

Step-by-step explanation:

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