Find the exact circumference of a circle with the given radius. 3½ cm C = 7.5π cm 7π cm 6.25π cm

Answers

Answer 1
C = 2 * (pi) * r
C = 2 * (pi) * 3.5.....3 1/2 = 3.5
C = (2 * 3.5) * (pi)
C = 7(pi) cm <===
Answer 2

Answer:

(B) [tex]7{\pi}cm[/tex]

Step-by-step explanation:

We are given the radius of the circle that is equal to [tex]3\frac{1}{2}cm[/tex].

Now, circumference of circle is given as:

[tex]C=2{\pi}r[/tex]

[tex]C=2{\pi}(3\frac{1}{2})[/tex]

[tex]C=2{\pi}(\frac{7}{2})[/tex]

[tex]C=7{\pi}cm[/tex]

Therefore, the circumference of the circle is [tex]7{\pi}cm[/tex].

Hence, option B is correct.


Related Questions

The price of a pair of shoes is $45.90. The sales tax rate is 5%. How much sales tax do you need to pay?

Answers

Multiply the price by the 5% by turning the percent into a decimal.
5% = 0.05
45.90 x 0.05 = $2.295
Which can be rounded to 2.30 if needed.

Answer:

The sales tax to be paid for the pair of shoes is $2.29.

Step-by-step explanation:

If the price of a pair of shoes is $45.90, and the sales tax rate for it is of 5%, in order to know the sales tax to be paid we have to do the following calculation:

(45.90 x 5) / 100 = X

229.5 / 100 = X

2.295 = X

So, as we can see, the sales tax to be paid is $2.29

Which of the following statements are equivalent to the statement "price increased by 100%"?

Choose all correct answers.

(A) The price doubled
(B) The price is 150% of the price before
(C) The price was reduced by a quarter
(D) The price became a half of what it was before
(E) The price is now 1.5 of what it was before
(F) The price now is 66 2/3 % of what it was before
(G) The price now is 200% of what it was before
(H) The price is 75% of what it was before

Answers

The statements equivalent to a price increase of 100% are that the price doubled and the price is now 200% of the original. These statements mean the new price is twice the original amount.

When analyzing statements that describe a price increase of 100%, it is important to understand that this means the new price is twice the original price. Among the listed statements, the correct ones that are equivalent to a 100% increase in price are:

(A) The price doubled

(G) The price now is 200% of what it was before

These are equivalent because if a price doubles, it is 100% more, making the new price 200% of the original. This can be seen in practical examples, such as if a gumball costs 25 cents and the price doubles, it becomes 50 cents, or 200% of its original cost.

write the phrase as a mathematical expression. 9 more than 4 times a number

Answers

9 + (4 x y) 
because it is 9 + 4 times any number (y,x,z)
Hello,


"9 more" is saying "9 +"

"4 times a number" is like saying "4x", you don't know what that number is, so you replace it with a variable "x". 

Let's put it together: 9 + 4x

There you go! Hope this helps =).

May

if pictures width 4+w and the length measures 8w+2, how much longer is the picture than it is wide?

Answers

 8w + 2
-  w + 4
________
7w - 2

Hope this helps!



The picture is 7w - 2 units longer than it is wide, this is found by subtracting the width (4+w) from the length (8w+2).

To find out how much longer the picture is than it is wide, we must compare the picture's length and width. Given the picture's width is 4+w and the length is 8w+2, we subtract the width from the length to find the difference:

Length - Width = (8w+2) - (4+w) = 8w + 2 - 4 - w = 7w - 2.

Therefore, the picture is 7w - 2 units longer than it is wide.

Related Rates Problem: The radius of a spherical watermelon is growing at a constant rate of 2 centimeters per week. The thickness of the rind is always one tenth of the radius. The volume of the rind is growing at the rate __?__ cubic centimeters per week at the end of the fifth week. Assume that the radius is initially zero. ...?

Answers

check the picture below.

so, if we grab the whole volume of the watermelon, and then subtract the volume of the inner sphere of 9/10, what we're left with is 1/10 of the volume, which is the volume of the rind, recall the rind has a radius of 1/10 of the radius, so we're simply taking off 1/10 from the radius and using the 9/10 and subtracting the volume with that radius.

now, after the 5th week, the radius of the watermelon has then grown to 2*5, or 10 cm, and the rind is 1/10 of that or just 1 cm.

[tex]\bf \cfrac{4\pi \left( \frac{9r}{10} \right)^3}{3}\implies \cfrac{4\pi \cdot \frac{729r^3}{1000}}{3}\implies \cfrac{\frac{2916\pi r^3}{1000}}{3}\implies \cfrac{2916\pi r^3}{3\cdot 1000}\implies \cfrac{243\pi r^3}{250}\\\\ -------------------------------\\\\ V_{rind}=\cfrac{4\pi r^3}{3}~~-~~\cfrac{243\pi r^3}{250}\implies V_{rind}=\pi r^3\left(\cfrac{4}{3}-\cfrac{243}{250} \right)[/tex]

[tex]\bf V_{rind}=\pi r^3\left( \cfrac{271}{250}\right)\implies \boxed{V_{rind}=\cfrac{271\pi }{250}r^3} \\\\\\ \cfrac{dV_{rind}}{dt}=\cfrac{271\pi }{250}\cdot \stackrel{chain~rule}{3r^2\cdot \cfrac{dr}{dt}}\implies \cfrac{dV_{rind}}{dt}=\cfrac{813\pi r^2\cdot \frac{dr}{dt}}{250} \\\\\\ \begin{cases} \frac{dr}{dt}=2\\\\ r=10 \end{cases}\implies \cfrac{dV_{rind}}{dt}=\cfrac{813\pi 10^2\cdot 2}{250}\implies \cfrac{dV_{rind}}{dt}\approx 3043.29[/tex]

Javier rounded to the nearest half to estimate the product of 3 2/5 and -3 7/8. How do the estimate and the actual product compare?

A. The actual product is less than the estimate. The numbers differ by less than one.
B. The actual product is greater than the estimate. The numbers differ by less than one.
C. The actual product is less than the estimate. The numbers differ by more than one.
D. The actual product is greater than the estimate. The numbers differ by more than one.

Answers

Answer:

b the answer

Step-by-step explanation:

just did it

Final answer:

The actual product is less than the estimate. The numbers differ by less than one.

Explanation:

Javier rounded to the nearest half to estimate the product of 3 2/5 and -3 7/8.

To estimate the product, we can round both numbers to the nearest half, which gives us 3.5 and -3.5. Multiplying these rounded numbers gives an estimate of -12.25.

The actual product of 3 2/5 and -3 7/8 is -3.4. Therefore, the actual product is less than the estimate. The numbers differ by less than one.

(algebra)
Solve for x.
Fx-gx=h

Answers

Fx-gx=h
Fx/f-gx/g=h/fg
x-x=h/fg
x=h/fg

If we solve the equation which is (F × x ) - (g × x ) = h , we will get the value of x as x = h / ( F - g ).

What is algebra ?

Algebra is a branch of mathematics that deals with various symbols and the arithmetic operations such as division , multiplication , etc.

An equation is given which is :

(F × x ) - (g × x ) = h

We have to solve this equation to get the value of the variable x.

So, the value of x can be calculated as :

(F × x ) - (g × x ) = h

Taking common x from LHS :

x ( F - g ) = h

Dividing by ( F - g ) on both sides we get :

[ x ( F - g ) / ( F - g )] = h / ( F - g )

or

x = h / ( F - g )

Therefore , if we solve the equation which is (F × x ) - (g × x ) = h , we will get the value of x as x = h / ( F - g ).

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which of the following three dimensional objects has a rotational symmetry about a line

Answers

Answer choices:

A. a car

B. a set of rectangular stairs

C. a rolling pin

D. a stapler

The answer is C. a rolling pin

which would not be a step in solving 3x + 1 + 2x = 2+ 4x?

Answers

Final answer:

To solve the equation 3x + 1 + 2x = 2 + 4x, you would first combine like terms, then eliminate variable terms on one side of the equation, and finally solve for x.

Explanation:

In solving the equation 3x + 1 + 2x = 2 + 4x, the first step would be to combine like terms on both sides of the equation. This means adding or subtracting the same type of terms together. In this case, you would combine the x terms on the left side and the constant terms on the right side. The equation will then be simplified to 5x + 1 = 2 + 4x.

The next step would be to get rid of the variable terms on one side of the equation. To do this, you can subtract 4x from both sides of the equation. This will result in x + 1 = 2.

Finally, you can solve for x by subtracting 1 from both sides of the equation. This gives us the solution x = 1.

How much work is needed to stretch this spring from x = 3.0 cm to x = 7.0 cm ?

Answers

Final answer:

The work done to stretch a spring is calculated using Hooke's Law, denoted by the formula W = 1/2kx², where 'k' is the spring constant and 'x' the displacement. The displacement is the difference between the final and initial lengths of the spring (7.0 cm - 3.0 cm). However, without the spring constant, a specific numerical answer cannot be provided.

Explanation:

The problem requires calculating the work done to stretch a spring. This can be done using Hooke's Law in Physics, which states that the force necessary to extend or compress a spring by a distance 'x' from its equilibrium position is proportional to 'x'. The magnitude of the force applied is represented as F = kx, where 'k' is the spring constant. However, the work done, W, against this force is given by 1/2kx².

To calculate, we need to know the value of the spring constant 'k', and the displacement 'x', which is the difference between the final length (7.0 cm) and the initial length (3.0 cm) of the spring. Without the spring constant, we, unfortunately, cannot provide a numerical answer.

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Use the graph to find the x-intercept for the equation y + 2 = 2(x + 3). The x-intercept is

Answers

the x-intercept is (-2, 0)

Answer:

(-2,0)

Step-by-step explanation:

I just did the assignment

The cartesian coordinates of a point are given. (a) (2, −2) (i) find polar coordinates (r, θ) of the point, where r > 0 and 0 ≤ θ < 2π.

Answers

it would be r,o beacuse of the grid cordinates in the sentence

3 1/5 divided by 1 1/7

Answers

2.8 is the answer for that question
I recommend that you convert both 3 1/5 and 1 1/7 to improper fractions, and then divide the former (3 1/5) by the latter (1 1/7):

Divide 16/5 by 8/7:

16
---
  5           16*7
-------- = --------- = 14/5
8             5*8
---
  7

There are 1800 gym members in total. 3\4 are aged 25-59 years. 1/5 are over 60 years old and the remainder are under 25 years old. How many members are under 25 years old

Answers

3/4 of 1800 is [tex]\displaystyle{ \frac{3}{4}\cdot1,800 = 3\cdot450=1,350[/tex].

1/5 of 1800 is [tex]\displaystyle{ \frac{1}{5}\cdot1,800 = \frac{1,800}{5}=360[/tex]


Thus, out of 1,800 members, 1,350 are aged 25-59, 360 are aged over 60. 

The remaining, 1,800-1,350-360 = 90, are members under 25 years old.



Answer: 90

Find the value of the following expression:

(3^8 ⋅ 2^-5 ⋅ 9^0)^-2 ⋅ (2^ -2 / 3^3) ^4 ⋅ 3^28

Write your answer in simplified form. Show all of the steps.

Answers

(3^8 ⋅ 2^-5 ⋅ 9^0)^-2 ⋅ (2^ -2 / 3^3) ^4 ⋅ 3^28 =

(6561 * 0.03125 * 1)^2 * (0.00925)^4 * 22876792454961 =

42037.81348 * 0.00000000732094 * 22876792454961 =

7040477235.56798349

 round answer as needed

A trapezoid is made of a square with side lengths of 7 feet and an isosceles right triangle whose base and height are both 7 feet.What is the area?

Answers

check the picture below.

The total area of the trapezoid is 73.5 square feet, calculated by adding the area of the square (49 square feet) to the area of the isosceles right triangle (24.5 square feet).

The area of a trapezoid consists of the area of a square and the area of an isosceles right triangle. Since the square has side lengths of 7 feet, its area is 49 square feet (7 feet x 7 feet). The isosceles right triangle, with both the base and the height being 7 feet, has an area of 24.5 square feet (1/2 x 7 feet x 7 feet). Therefore, the total area of the trapezoid is the sum of the areas of the square and the triangle.

Total area = Area of square + Area of triangle

Total area = 49 square feet + 24.5 square feet = 73.5 square feet.

Write a real-life situation that can be modeled by the expression 1 1/3 x 2.
1 1/3 is a mixed number

Answers

You have 11 ounces of candy per package you got to split 3 ways you have 2 packages how much candy does each person get?

I came up with this...good luck


Hello there! You can do something like this:
You have 2 2/3 cakes. You tend to share 2 of them. How many will your friend get?
Hope this helps!

The graph shows a line and two similar triangles.

Answers

Answer:

Option C. is the correct option.

Step-by-step explanation:

The given line in the graph passes through two points (0, 3) and (3, 7).

We have to find the equation of the line.

Since y = mx + c is the standard equation of a line

where m = slope of the line

c = y - intercept

Slope of a line m = [tex]\frac{(y-y')}{(x-x')}[/tex]

Now we put the values of x and y to find the slope of this line.

m = [tex]\frac{7-3}{3-0}=\frac{4}{3}[/tex]

Since (0, 3) passes through the line

3 = 0 + c

c = 3

Equation of the line will be

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

Option C. is the answer.

Answer:

me dony know

Step-by-step explanation:

what number has the same absolute value as 81?

Answers

-81 has the same absolute value.

Step by step ways to solve 3.4 x 4.72

Answers

Final answer:

To solve 3.4 x 4.72, multiply the numbers as if they are whole, then place the decimal in the product so that it has the same number of decimal places as the sum of the decimal places in the factors, resulting in 16.048.

Explanation:

To solve the multiplication of 3.4 x 4.72, follow these steps:

Write down the numbers to be multiplied, one below the other, aligning the decimal points:  3.4
x 4.72
Multiply as if you are dealing with whole numbers, ignoring the decimal points for now. Start by multiplying the digit in the ones place of the bottom number by each digit in the top number, then move to the next digit to the left.   342
x 472
-------
 1368  (3.4 x 2)
17100  (3.4 x 70, shift one place to the left)
136800  (3.4 x 400, shift two places to the left)
-------
160704
Add up the results of each multiplication step.Now count the total number of decimal places in both of the original numbers (1 in 3.4 and 2 in 4.72, so 3 in total).Place the decimal point in the answer so that it has the same number of decimal places as the sum from step 4. Since you have 3 decimal places in total, you'll count three places from the right of the answer.160.704

The final result of multiplying 3.4 by 4.72 is 16.048.

What is the factorization of g3 – 125?

(g– 5)(g2 + 5g + 10)
(g – 25)(g2 + 25g + 625)
(g – 5)(g2 + 5g + 25)
(g – 25)(g2 + 5g + 125)

Answers

[tex]\bf \textit{difference of cubes} \\ \quad \\ a^3+b^3 = (a+b)(a^2-ab+b^2)\qquad (a+b)(a^2-ab+b^2)= a^3+b^3 \\ \quad \\ a^3-b^3 = (a-b)(a^2+ab+b^2)\qquad (a-b)(a^2+ab+b^2)= a^3-b^3 \\\\ -------------------------------\\\\ g^3-125\implies g^3-5^3\implies (g-5)(g^2+5g+5^2) \\\\\\ (g-5)(g^2+5g+25)[/tex]

Answer: (C) (g – 5)(g2 + 5g + 25)

Part A: Abe rented a bike at $36 for 5 days. If he rents the same bike for 8 days, he has to pay a total rent of $48.

Write an equation in the standard form to represent the total rent (y) that Abe has to pay for renting the bike for x days. (4 points)

Part B: Write the equation obtained in Part A using function notation. (2 points)

Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points)

(10 points)

Answers

Part A: Equation is: 48=m(8)+b                                                                                           Part B: Notation form is 48^x=m(8)+b



Could 10.7 cm,3.2 cm,and 5.5 cm be the side lenghts of a triangle

Answers

Using the Pythagorean Theorem, do a^2 + b^2 = c^2. The biggest number has to be the hypotenuse, so 10.7 would be the hypotenuse. Therefore, 5.5^2 and 3.2^2 have to equal 10.7^2.

To start, find the square of both 5.5 and 3.2.

5.5^2 = 30.25
3.2^2 = 10.24

Now add them together to give you:

30.25 + 10.24 = 40.49.

Finally, find the square root of 40.49. If it is 10.7, then the 3 measurements can be side lengths. If not, they cannot all be side lengths.

This yields 6.36317530797. Since this is NOT 10.7, the 3 measurements cannot be side lengths of a triangle.

Hope this helps! :)

A negative correlation between two variables x and y usually yields a negative p-value for r.
a. True
b. False

Answers

A. True if im wrong sorry hope this helped tho :p

Which word best describes the range of a function?
A. input

B. output

C. independent

D. relation

Answers

The answer to the question is D

Answer:

It is actually B output

Step-by-step explanation:

The rectangular box shown in the figure has dimensions 8" × 7" × 4" (a = 8, b = 7, c = 4). Approximate the angle θ formed by a diagonal of the base and a diagonal of the 7" × 4" side. (Round your answer to two decimal places.)

Answers

Please see the attached picture for the work on solving this problem.

Answer:

Rectangle

four

Length and width

Step-by-step explanation:

Gregg subtracted some number x from 47, then multiplied the result by two, subtracted 15 and got 45. What was Gregg's number?

(PLEASE ANSWER WITH WORK, THANKS)

Answers

Work in reverse.

45 + 15= 60. 60/2= 30. 30 + x = 47.

So, x= 47-30.
x= 17.


Round each addend to the nearest ten thousand,and then find the estimated sum.?
337,961 + 482,746
_+_=_

Answers

Round each addend to the nearsest ten thousand, and then find the estimated sum for 337,961 + 482,746 = 820,707
Final answer:

To find the estimated sum, round each addend to the nearest ten thousand by looking at the digit in the ten thousand places. Then add the rounded numbers together.

Explanation:

To round each addend to the nearest ten thousand, look at the digit in the ten thousand places. If the digit is 5 or greater, round up by increasing the number in the ten thousand place by 1. If the digit is less than 5, round down by keeping the number in the ten thousand places the same. For 337,961, the digit in the ten thousand places is 9, so it rounds up to 340,000. For 482,746, the digit in the ten thousand places is 7, so it rounds down to 480,000. Now, you can find the estimated sum by adding the rounded numbers, which would be 340,000 + 480,000 = 820,000.

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One angle of a linear pair is 12 less than half the other angle find both angles

Answers

The larger angle is "x" and the other is 1/2x-12. You add them both and get
3/2x-12 then you set it equal to 180 like "3/2x-12=180 because a linear pair of angles adds up to 180 degrees. So x=128 degrees and the other is 52 degrees
Angle1 + Angle2   = 180
x +          (x/2) -12 = 180
3/2x = 192
x = 128
Angle 1 = 128
Angle 2 = 52

A bus timetable states that the next bus leaving for holmfirth is at 16:40 what time is this in 12 hours time

Answers

It’s is 4:40 because 13-1 14-2 15-3 16-4
It’s is 4:40 


i hope this helps and have a wonderful day!!!
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