Explain how the difference of a fraction or a rational number and its additive inverse is equal to zero.

Answers

Answer 1
This question is in reverse (in two ways): 

1. The definition of an additive inverse of a number is precisely that which, when added to the number, will give a sum of zero. 

The real problem, in certain fields, is usually to show that for all numbers in that field, there exists an additive inverse. 

Therefore, if you tell me that you have a number, and its additive inverse, and you plan to add them together, then I can tell you in advance that the sum MUST be zero. 

2. In your question, you use the word "difference", which does not work (unless the number is zero - 0 is an integer AND a rational number, and its additive inverse is -0 which is the same as 0 - the difference would be 0 - -0 = 0). 

For example, given the number 3, and its additive inverse -3, if you add them, you get zero: 
3 + (-3) = 0 

However, their "difference" will be 6 (or -6, depending which way you do the difference): 

3 - (-3) = 6 
-3 - 3 = -6 

(because -3 is a number in the integers, then it has an additive inverse, also in the integers, of +3). 

--- 

A rational number is simply a number that can be expressed as the "ratio" of two integers. For example, the number 4/7 is the ratio of "four to seven". 

It can be written as an endless decimal expansion 
0.571428571428571428....(forever), but that does not change its nature, because it CAN be written as a ratio, it is "rational". 

Integers are rational numbers as well (because you can always write 3/1, the ratio of 3 to 1, to express the integer we call "3") 

The additive inverse of a rational number, written as a ratio, is found by simply flipping the sign of the numerator (top) 

The additive inverse of 4/7 is -4/7 

and if you ADD those two numbers together, you get zero (as per the definition of "additive inverse") 

(4/7) + (-4/7) = 0/7 = 0 

If you need to "prove" it, you begin by the existence of additive inverses in the integers. 
ALL integers each have an additive inverse. 
For example, the additive inverse of 4 is -4 

Next, show that this (in the integers) can be applied to the rationals in this manner: 

(4/7) + (-4/7) = ? 
common denominator, therefore you can factor out the denominator: 

(4 + -4)/7 = ? 
Inside the bracket is the sum of an integer with its additive inverse, therefore the sum is zero 
(0)/7 = 0/7 = 0 

Since this is true for ALL integers, then it must also be true for ALL rational numbers.

Related Questions

Henry usually has about $300 in his account at any given time during the month. He limits his ATM visits to one per week and is interested in banking online options. Bank X and Bank Z have 5 ATMs within a 5 mile radius of Henry’s work and his new home. Which bank should he choose? a. Bank X b. Bank Y c. Bank Z d. Bank X and Z

Answers

From the situation above, Bank Z is the best option. SO the answer is letter C. Bank Z. This bank is convenient because Bank Z have 5 ATMs within a 5 mile radius of Henry’s work and his new home.
the answer is c on E2020

The mass in a pendulum clock completes one complete swing in 1.00 s . what is the length of the rod?

Answers

The period of oscillation of a pendulum is
[tex]T=2 \pi \sqrt{ \frac{L}{g} } [/tex]
Where L is the length of the pendulum and [tex]g=9.81 m/s^2[/tex] the gravitational acceleration.
Re-arranging the formula and using T=1.0 s, we find the length of the pendulum:
[tex]L= \frac{T^2g}{4 \pi^2}=0.25 m [/tex]
Final answer:

The length of the pendulum or rod in a pendulum clock that completes one swing in 1.00 seconds is approximately 0.25 meters, or 25 centimeters.

Explanation:

The time taken by the pendulum to complete one full swing is also known as its period, denoted by T. You indicated that in this case the pendulum completes one swing in 1.00 seconds. To determine the length of the pendulum, or rod, we use the formula for the period of a simple pendulum, T=2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity (approximately 9.8 m/s² on Earth).

Setting T to 1.00 seconds and g to 9.8 m/s², we can solve this equation for L:

L = (T² * g) / 4π²

Substituting the given values:

L = (1.00² * 9.80) / 4π²

This gives us a pendulum length of approximately 0.25 meters, or 25 centimeters.

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Ronnie, Mack, Kim, and Ada together stacked a total of 40 pizzas in a pan. Ronnie stacked 0.25 of the pizzas, Mack stacked 9 of the 40 pizzas, Kim stacked 35% of the pizzas, and Ada stacked the remaining pizzas. Who stacked the most pizzas?

Answers

Hello!

Here's how much each person stacked:

Ronnie -- 0.25 of the 40 pizzas.

Mack -- 9/40

Kim -- 35% of the 40 pizzas.

Ada -- rest of the pizzas.

Now, the questions asks for who stacked the most pizzas.

First, find our how many pizzas they stacked out of 40.

40 × 0.25 = 10

40 × 35% = 14

10 + 9 + 14 = 33

40 - 33 = 7

This means that Ronnie stacked 10 pizzas, Mack stacked 9 pizzas, Kim stacked 14 pizzas, and Ada stacked 7 pizzas.

ANSWER:

Kim stacked the most pizzas since she stacked 14 of them.

Answer:

Kim stacked the most pizzas since she stacked 14 of them.

Step-by-step explanation:

Bethany, Lauren, Amanda, and David all meet at a family reunion. They are comparing their ages. They have found that Lauren is 13 years older than Bethany and David is 11 years older than Amanda. They also found that the product of Bethany's and Lauren's ages is equal to twice Amanda's age. Also, if they subtract 20 years from both Bethany's and Lauren's age, the product is equal to David's age.

Answers

as stated in the question 
Bethany - x
Amanda - y
the relationships are 
Lauren is 13 years older than Bethany 
Laurens age = x + 13
David is 11 years older than Amanda 
Davids age = y + 11
product of Bethany's and Laurens ages equal to twice Amandas age 
x * (x+13) = 2y
x² + 13x = 2y
divide all by 2
x²/2 + 13/2x = y
if they subtract 20 from Bethany and Laurens, then product is equal to Davids age
(x-20)(x+13-20) = y +11
(x-20)(x-7) = y+11
x² -7x -20x+140 = y+11
x² -27x +129 = y

the 2 equations to determine the relationships are 
y = x²/2 + 13/2x 
y = x² -27x +129
the first option is correct 

In preparation for the Senior Prom, 8 seniors got together and decided to travel in style and rent a limousine. They investigated and found a company that would rent the limousine for a minimum charge of $180 for the first 3 hours and $30 per hour thereafter. They estimated that they needed to be picked up at 8:00 p.m. and be back by 1:00 a.m. How much money would each student have to pay if they planned to leave the limousine driver a $20.00 tip?

Each student would have to pay__________.

Answers

First we need to calculate the total cost.

The seniors will rent limousine from 8:00 pm till 1:00 am. So total time of rent = 5 hours

Total charges = Charges of first 3 hours + Charges of next 2 hours + Tip
So,
Total charges = $180 + 2($30) +$20 = $260

Thus the total amount the 8 seniors will have to pay is $260. The amount each senior will have to pay is $260/8 = $32.5

Therefore, each student will have to pay $32.5

70 POINTS!!!! PLEASE HELP!! I WILL MARK. BRAINLIEST!!

Write the trinomial as a square of a binomial or as an expression opposite to a square of a binomial:

a. 4cd –25c^2–0.16d^2


b. –0.49x^2–1.4xy –y^2

Answers

a. 4cd-25c²-0.16d²
-(5c-0.4d)²

b. -0.49x²-1.4xy-y²
-(0.7x+y)²

The value of equation A = - ( 5c - 0.4d )²

The value of equation B = - ( 0.7x + y )²

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the first equation be represented as A

Now , the value of A is

A = 4cd - 25c² - 0.16d²   be equation (1)

On simplifying the equation , we get

A = - ( 25c² - 4cd + 0.16d² )

On factorizing the equation , we get

A = - ( 5c - 0.4d )²

Therefore , the value of A is - ( 5c - 0.4d )²

Let the second equation be represented as B

Now , the value of B is

B = -0.49x² - 1.4xy - y²   be equation (1)

On simplifying the equation , we get

B = - ( 0.49x² + 1.4xy + y² )

On factorizing the equation , we get

B = - ( 0.7x + y )²

Therefore , the value of B is - ( 0.7x + y )²

Hence , the equations are solved

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apply the distribution property to produce an equivalent expression 2(7g + 7)

Answers

21+g or it could be(still the same thing) 21 + 1g

A 25-foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 6 feet from the base of the building. How high up the wall does the ladder reach?

Round to the nearest hundredth

Answers

24.27 is the answer

hope it helps
Final answer:

The ladder reaches a height on the wall of approximately 24.29 feet.

Explanation:

To find the height on the wall that the ladder reaches, we can use the Pythagorean theorem. The ladder, the wall, and the ground form a right triangle. The ladder is the hypotenuse, the distance from the base of the building to the ladder is one leg, and the height on the wall that the ladder reaches is the other leg. Using the Pythagorean theorem, we have:

a² + b² = c²

where a is the distance from the base of the building to the ladder (6 feet), b is the height on the wall, and c is the length of the ladder (25 feet).

Solving for b, we have:

b = √(c² - a²)

Substituting the given values, we get:

b = √(25² - 6²) = √(625 - 36) = √589 ≈ 24.29 feet

Therefore, the ladder reaches a height on the wall of approximately 24.29 feet.

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Susan is drawing a triangle. The first segment she draws is 6 centimeters in length, and the second segment is 8 centimeters long. The measure of the angle between those two segments is 80°. Which best describes the length of the third segment?
A) equal to 14 centimeters
B) less than 14 centimeters
C) greater than 14 centimeters
D) greater than or equal to 14 centimeters

Answers

The answer is B), less than 14 centimeters.

The sum of any two sides of a triangle must be larger than the third side of the triangle.  The sides we are given are 6 and 8; 6+8=14, so the third side must be smaller than 14.

Answer:

The answer is B) less than 14 centimeters

Step-by-step explanation:


show steps in solving ax^2+bx+c=0

Answers

Solving for A.

STEP 1 ● Add -bx to both sides.
ax^2 + bx + c + -bx = 0 + -bx
ax^2 + c = -bx

STEP 2 ● Add -c to both sides.
ax^2 + c + -c = -bx + -c
ax^2 = -bx -c

STEP 3 ● Divide both sides by x^2
ax^2 / x^2 = -bx -c / x^2
a = -bx -c / x^2

ANSWER ● a = -bx -c / x^2

Hope I helped

what is the value of x enter your answer in the Box

Answers

61.4 is the value of x

find the slope pf the line on the grap (-2,2),(4,0) reduce all fractional answers to the lowest term.
1). -3
2 ). -1/3
3). -1

Answers

Hey there! :) 

We're trying to find the slope of the line on the graph (not given, but that's okay). We're given the points (-2, 2) and (4, 0). 

Using the slope equation, we simply just have to plug our points in and boom - there's your slope! 

Slope equation : m = y₂ - y₁ / x₂ - x₁

Now, using our given points, we can very simply plug everything in! :)

Now, in case you didn't know which number aligns with which variable, I'll go ahead and help you out with this. 

x₁ = -2 , x₂ = 4 , y₁ = 2 , y₂ = 0

Now, let's plug and chug!

m = (0 - 2) / (4 - (-2))

Simplify.

m = -2 / 4 + 2

Simplify.

m = -2 / 6

Simplify.

m = -1/3

So, our slope is -1/3.

~Hope I helped!~

ami would like to withdraw $10,364.10 at the end of each year, for 10 years, from an account paying 2.3% compounded annually. Determine the amount needed in the account for Tami to do this. Round to the nearest cent.

Answers

Answer = $3,140.64


EXPLANATION

Given,

Amount, A = 10,364.10
Rate, r = 2.3
Number of times interest is compounded per year, n = 1
Time (in years), t = 1
Principal, P = ?

Formula: A = P [tex](1 + \frac{r}{n} )^{nt} [/tex]

10,364.10 = P [tex]( 1 + \frac{2.3}{1} )^{1} [/tex]

10,364.10 = P + 2.3P

10,364.10 = 3.3P

P = [tex] \frac{10,364.10}{3.3} [/tex]

P = 3,140.64 (Rounded off to the nearest cent)

Answer:

The amount needed in the account is $ 91,651.91 .

Step-by-step explanation:

This can be solved applying the annuity formula for a present value.

The annual withdraw is P=$10,364.10.

The interest rate is r=2.3%, compounded anually.

The period for the withdrawals is n=10 years.

The amount needed in the account is equal to the present value ot the withdrawals:

[tex]PV=\sum_{k=1}^{10} \dfrac{P}{(1+r)^k}=\dfrac{P}{r}\left[1-(1+r})^{-10}\right]\\\\\\ PV=\dfrac{10,364.10}{0.023}\left[1-(1.023})^{-10}\right]\\\\\\PV=450,613.04\left[1-0.80\right]\\\\\\PV=450,613.04*0.20\\\\\\PV= 91,651.91[/tex]

Which equation is the inverse of y = 9x^2 - 4?

Answers

keep in mind that, to get the inverse expression of any relation, we start off by doing a quick switcharoo on the variables, and then solve for "y", so let's do so,

[tex]\bf y=9x^2-4\qquad \stackrel{inverse}{\boxed{x}=9\boxed{y}^2-4}\implies x+4=9y^2 \\\\\\ \cfrac{x+4}{9}=y^2\implies \sqrt{\cfrac{x+4}{9}}=\stackrel{f^{-1}(x)}{y}[/tex]
Final answer:

The inverse of

[tex]y = 9x^2 - 4[/tex]

can be mathematically given by y = +/- sqrt((x + 4) / 9), yet it is not considered a function because it does not pass the horizontal line test.

Explanation:

The inverse of a function flips the x and y values such that each x becomes a y and vice versa. However, it's important to mention that not all functions have an inverse that is also a function. Your provided function,

[tex]y = 9x^2 - 4[/tex]

, is a quadratic function (a type of polynomial function), and it does not have an inverse that can also be called a function because it does not pass the horizontal line test.

Yet, mathematically it can be found by swapping x and y and solving for y. If we do that, we have:

Switch the roles of y and x, we get: x = [tex]9y^2 - 4[/tex].Solving for y, we have: y = +/- sqrt((x + 4) / 9), where "sqrt" denotes the square root.

Again, this is not a function due to the presence of the plus/minus symbol.

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can someone help!!!plz

Answers

Try this solution (shortly):
if the given angles are: 20x+5 and 24x-1, then according to the property of the adjacent angles their sum is 180°:
(20x+5)+(24x-1)=180; and
x=176/44=4

answer: 4.

Louie has 20 more than twice as many baseball cards as Gerarardo does. Together they have at least 350 cards.At least how many baseball cards does Gerardo have?

Answers

Hi there!

350 < g + g*2 + 20
330 < 3g
g > 110

Gerardo has at least 110 baseball cards.

Hope this helps!

Hope this helps!

a chef makes 1 1/2 os soup in a large pot.How many 1 cup servings can the chef get

Answers

One cup is 8oz. So 0 servings. 
If you entered the question wrong just reply and I will attempt to help.

There are 108 flights from an airport, 20 of which are longer than 3 hours. The flight from this airport will be randomly chosen. What is the probability it is longer than 3 hours? Enter your answer as a fraction, in simplest form, in the box.

Answers

5/27 is your answer. Hope it helps! :)

The required solution of the probability it is longer than 3 hours is 5/27.

What is probability?

probability is the ratio of the number of favorable outcomes and the total number of possible outcomes. The chance that a particular event (or set of events) will occur expressed on a linear scale from 0 (impossibility) to 1 (certainty), also expressed as a percentage between 0 and 100%.

Given:

There are 108 flights from an airport, 20 of which are longer than 3 hours.

According to given question we have

By the use of probability we get,

the probability it is longer than 3 hours

=20/108

By simplifying we get

=5/27

Therefore, the required solution of the probability it is longer than 3 hours is 5/27.

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Joint-Serve Prosthetics spends 43% of its total expenses for payroll. It increased its total expenses when it spent $250,000 for robotic assemblers. This changed the allocation for payroll to 38% of total expenses. What were its total expenses after purchasing the robotic assemblers? Hint: First find the total expense before the purchase of robotic assemblers.

Answers

Answer: $2,150,000

Explanation: Let

T = Total expenses of Joint-Serve

Then, before the company acquired robotic assemblers, the expenses allocated for payroll is given by

Expenses for Payroll = 43% of Total Expenses
Expenses for Payroll = 0.43T     (1)
(Because 43% = 0.43)

Because the total expenses increased by $250,000 after spending for robotic assemblers, the total expenses = T + 250,000

So, the payroll expense is now calculated as

Expenses for Payroll = 38% of Total Expenses
Expenses for Payroll = 0.38(T + 250,000)     (2)
(Because 38% = 0.38 and total expenses = T + 250,000)

By comparing equations (1) and (2),

[tex]0.43T = 0.38(T + 250,000) \\ 0.43T = 0.38T + 0.38(250,000) \\ 0.43T = 0.38T + 95,000 \\ 0.43T - 0.38T = 95,000 \\ \frac{0.05T}{0.05} = \frac{95,000}{0.05} \\ \boxed{T = \$ 1,900,000}[/tex]

Thus, the total expense before the purchase of robotic assemblers is T = $ 1,900,000. Therefore, the total expense after purchasing the robotic assemblers is T + 250,000 = 1,900,000 + 250,000 = $2,150,000  

1.304 times 10 ^7 in standard form

Answers

Hello there!

First, let's first do [tex]10^7[/tex]

[tex]10*10*10*10*10*10*10=\boxed{10,000,000}[/tex]

Second step.

We do [tex]10,000,000*1.304=13,040,000[/tex]

I hope this helps you!

Mr. Nelson’s Shoes Mr. Nelson manages a shoe store. One day a man came into the store right after it opened and before Mr. Nelson had a lot of change in the register. The man purchased a pair of shoes that cost $80 and gave Mr. Nelson a $100 bill. Mr. Nelson did not have change, so he went next door and exchanged the $100 for five $20 bills. He gave the customer his shoes and $20 in change. Later, the cashier next door heard there were some counterfeit bills being passed, so she asked Mr. Nelson for five $20 bills, which Mr. Nelson now had, in trade for the $100 bill. Shortly after that the police arrived and determined that the $100 bill was counterfeit and confiscated it. Who lost money? How much money?

Answers

Nelson lost the money.

He lost the $100 which was confiscated and the $20 bills that he gave to the customer. 
So he lost $120.

He also lost a pair of shoes.


URGENT algebra 2 B

Write an equation that expresses the grips weight of an aircraft as a function of its landing speed !

Answers

Try this solution:
V²=1.223*w; ⇒ w=V²/1.223

Answer:
[tex]w= \frac{V^2}{1.223} [/tex]

Use the distance formula to find the length of the line with endpoints at (1,3) and (3,1)?

√8
8
√32
32

Answers

Let's plug the coordinate point values into the equation: 
[tex] \sqrt{(3-1)^{2} +(1-3)^{2} } [/tex]
(1,3) is x₁ and (3,1) is x₂
Begin to simplify within the parenthesis: 
[tex] \sqrt{2^{2}+(-2)^{2} } [/tex]
Square the two numbers: 
[tex] \sqrt{4 + 4} [/tex] 
Add the two to get: 
[tex] \sqrt{8} [/tex] 
Since 8 is not a square number, this is as far as we can simplify this. Hope this helps!

Insurance that pays for damages to houses or businesses is called _____.
 A.property/homeowners insurance 
B.renters insurance
 
C.building insurance
 
D.liability insurance

Answers

Answer:

Option A is correct answer.

Step-by-step explanation:

Insurance that pays for damages to houses or businesses is called - property/homeowners insurance.

The homeowners insurance protects ones personal property. This insurance deals with the insurance covers for repairing or replacing ones home and belongings, if they are damaged by fire or theft.

It also covers for the damage to others property inflicted by you or when any visitor damages your property.

Final answer:

Insurance that pays for damages to houses or businesses is called property/homeowners insurance, which covers a range of risks and includes liability coverage. The policy generally provides cash value or replacement value for the insured property and possessions.

Explanation:

The insurance that pays for damages to houses or businesses is called property/homeowners insurance. This type of insurance is crucial as it provides a safety net against various risks such as fire, wind damage, theft, and falling trees. Besides covering damages to the physical structure of a home, homeowners insurance often includes liability coverage, which protects the homeowner up to a certain amount if someone is injured on their property, except in cases where the law is being broken.

Furthermore, it is worth noting that an insurance policy generally has a cash value. If a house is destroyed, the policy will pay out the current value of the house. A replacement value policy is recommended, as it will adjust the payout based on inflation and cover the cost to replace the home, including other structures like garages and pools as well as personal property within the house.

HELPPPPPPPPPPPPPPPPPPPPP


Write an equation of the line that passes through the points.

(2, 5), (0, 5)

Answers

Consider this option (based on algebra):
1. Common view of linear equation is y=kx+b, where k and b - numbers.
2. Substituting the coordinates of points A(2;5) and B(0;5):
[tex] \left \{ {{(A): 2k+b=5} \atop {(B): 0*k+b=5}} \right. \ =\ \textgreater \ \ \left \{ {{k=0} \atop {b=5}} \right. [/tex]
3. if k=0 and b=5, then the equation of required line is y=5.

Manny has a credit card with a line of credit at $4,000. He made the following purchases: $425.36, $358.33, $377.11, and $90.20. What is Manny's available credit?

Answers

$2,749. 425.36+358.33+377.11+90.20= 1,251. 4,000- 1251= 2,749
Final answer:

Manny's available credit is $2,749.00.

Explanation:

To find Manny's available credit, we need to subtract the total of his purchases from his line of credit. Manny's purchases total $425.36 + $358.33 + $377.11 + $90.20 = $1,251.00. So, to find his available credit, we subtract $1,251.00 from his line of credit of $4,000.00. The available credit is $4,000.00 - $1,251.00 = $2,749.00.

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There are 19.6.grams of protein in 4 ounces of cashews. About how many gram of protein are in one ounce of cashews?

Answers

19.6 / 4 will give you 1 ounce. It's about 5 if you round 19.4 to 20
If you use a calculator, it is 4.9 grams.

Final answer:

To find the protein content in one ounce of cashews, divide 19.6 grams by 4 ounces, resulting in approximately 4.9 grams of protein per ounce.

Explanation:

To find out how many grams of protein are in one ounce of cashews, we need to divide the total amount of protein by the number of ounces. Given that there are 19.6 grams of protein in 4 ounces of cashews, we can calculate the amount of protein in one ounce by performing the following calculation:

Amount of protein in one ounce = Total grams of protein / Number of ounces

Amount of protein in one ounce = 19.6 grams / 4 ounces

Amount of protein in one ounce = 4.9 grams

Therefore, there are approximately 4.9 grams of protein in one ounce of cashews.

Elizabeth lives in San Francisco and works in Mountain View. In the morning, she has 333 transportation options (take a bus, a cab, or a train) to work, and in the evening she has the same 333 choices for her trip home. If Elizabeth randomly chooses her ride in the morning and in the evening, what is the probability that she'll use a cab exactly one time?

Answers

All transportation (bus, cab, train) are all similarly likely to be selected, and 1 of them must be selected at morning and evening, so we get: P (bus) = P (cab) = P (train) = 1/3. We also have P(no cab in evening) = P(no cab at morning) = 2/3 
Now, P(using cab exactly once) = P(cab at morning and no cab in the evening) + P(no cab at morning and cab in the evening)
= P(cab, no cab) + P(no cab, cab) 
= 1/3 * 2/3 + 2/3 * 1/3 
= 2/9 + 2/9 
= 4/9 
Probability that Elizabeth uses a cab only once is 4/9.

Answer:

4/9

Step-by-step explanation:

Please help with number 10

Answers

Answer:

see below for a drawingthe area of one of the trapezoids is 20 units²

Step-by-step explanation:

No direction or other information about the desired parallelogram is given here, so we drew one arbitrarily. Likewise for the segment cutting it in half. It is convenient to have the bases of the trapezoids be the sides of the parallelogram that are 5 units apart.

The area of one trapezoid is ...

  A = (1/2)(b1 +b2)h = (1/2)(3+5)·5 = 20 . . . . square units

The sum of the trapezoid base lengths is necessarily the length of the base of the parallelogram, so the area of the trapezoid is necessarily 1/2 the area of the parallelogram. (The area is necessarily half the area of the parallelogram also because the problem has us divide the parallelogram into two identical parts.)

what is the circumternence

Answers

Circumference of a circle is the distance around the circle. This can be found by using the equation below

2*pi*radius

Our diameter, as shown, is 9cm. Since radius is half of the diameter, our radius is 4.5cm.

Therefore, our circumference is...

2 * pi * 4.5 = 9pi cm total
Other Questions
What is the 5th term of the geometric sequence a1=120, a2=36, a3=10.8, a6=0.2916 HELP ASAP!!!Which of the following is the closest estimate of the number of stars present in a galaxy?A. One hundredB. Two millionC. Several billionD. Several trillion j= -8c^2 - 4cd - d^2 k= -3c^2 +7cd - 3d^2 j+k = What is the first stage in the listening process?respondingrememberingselectingunderstandingevaluating Lenny, who is not yet three years old, says to his mother, "cereal in this bowl from here now." it is apparent that lenny has not at this stage of his life mastered the _____ of the english language. Is the mean always a more accurate measure of center than the median find the exact value of cos285 using the fact that 285=330-45 nuclear power plants use the radioactive element ____ to create energyA. californiumB.plutoniumC.kryptoniteD.uranium-235 Name the above art work, its artist, and the technique used to create it. Which artistic movement was this artist and piece a part of? Why is it an example of this artistic movement? During dna replicationa. one template strand must be degraded to allow the other strand to be copied.b. the template strands must separate so that both can be copied.c. the template strands come back together after the passage of the replication fork.d. origins of replication always give rise to single replication forks. When you look into a clear pond, a fish may appear to be in a different position than it actually is. What is this caused by?A. diffractionB. dispersionC. refractionD. reflection, If arc XV = 68 and YUV = 36, what is the measure of arc VY? Factor completely: 9ab + 12ax - 6b - 8x (1 point) 1. Prime 2. (3b - 4x)(3a - 2) 3. (3b + 4x)(3a - 2) 4. (3b + 4x)(3a + 2) 3(10+2j) please help me Somebody help. I cant figure this question out. thanks Who made the first computer? Which was a characteristic of Japans postwar government? a. one-party system c. only males could vote b. democracy d. large military expenditures A sample of gas in a sealed container (fixed volume) is heated from room temperature to 80.0C. A. Does the pressure inside the container increase or decrease? B. The effect of temperature on the pressure of a gas illustrates _____'s Law. C. Explain what happens at the molecular level to change the pressure as the temperature is raised. Why did President Truman hesitate to use the atomic bomb? He worried that Japan also had an atomic bomb and might use it on the United States. No one knew whether the atomic bomb would work. Using the atomic bomb would change the world forever by making it a more dangerous place. Click here to read and refer to "Mary Pickersgill, Flagmaker" in order to answer the question below. Select all that apply. The bias present in this article is most likely _____.