True or False: An equation to find Circumference is C = πr2

Answers

Answer 1

Answer:

False

Step-by-step explanation:

It's actually C=πd d is diameter or C=πr^2

Answer 2

Answer:

True

Step-by-step explanation: Calculate circumference from area

We are given the area, and by substitution we know that 13π = πr2. We divide out the π and are left with 13 = r2. We take the square root of r to find that r = √13. We find the circumference of the circle with the formula C = 2πr.


Related Questions

3 less than the product of 4 and n what is the answer
A. 3 - 4n
B. 4n - 3
C. 3n - 4
D. 4n + 3

HELP QUICK

Answers

4n-3
product is multiplication so 4n would be the first part and then you take 3 away from it

−2/3​p+1/5−1+5/6​p

solve

Answers

Answer:

[tex]\frac{-24p + 5}{30p}[/tex]

Step-by-step explanation:

Did you mean to add the terms.  You can only solve equations or inequalities and this is an expression.  Assuming you are to add the terms, then the lowest common denominator is 30p

So,  [tex]\frac{-2(10)}{3p(10)} + \frac{6p}{5(6p)} - \frac{30p}{30p} + \frac{5(5)}{6p(5)}[/tex]

=  [tex]\frac{-20 + 6p - 30p + 25}{30p}[/tex]

=  [tex]\frac{-24p + 5}{30p}[/tex]

Answer:

1/6p-4/5

Step-by-step explanation:i have khan and it is the right awnswer

CAN YOU HELP ME PLEASE HURRY PLEASE HURRY :(

Answers

The answer is $50 per month

SOMEONE PLS HELP WITH THIS

Answers

Answer:

blue

Step-by-step explanation:

Answer:

The second option from the left

Step-by-step explanation:

The right answer is the second option because if we follow the pattern through we will get the following...

[tex]y =2(4)^{x} \\y = 2(4)^{0} = 2(1) = 2\\y = 2(4)^{1} = 2(4) = 8\\y = 2(4)^{2} = 2(16) = 32\\y = 2(4)^{3} = 2(64) = 128[/tex]

From this we know the pattern must be 2, 8, 32, 128

What is the perimeter 2x+3 as length and x-6 as width

Answers

What is the perimeter 2x+3 as length and x-6 as width

P = 2L + 2W

P = 2(2x+3)+2(x-6)

P = 4x+6 + 2x - 12

P = 6x - 6

#CarryOnLearning#LearningIsFun

Answer:

[tex]perimeter = 2(l + b) \\ = 2(2x + 3 + x - 6) \\ = 4x + 6 + 2x - 12 \\ = 6x - 6[/tex]

Find the unknown number in each proportion.

33,264 feet x miles
_______________
5,280 feet x 1 mile,

Answers

Hey there!

33,264 feet is 6.3 miles.

Have a terrificly amazing day!

Is the circumference of a circle that the diameter is 9.4 cm

Answers

Answer:

To find the radius we must multiply by two to get 18.8

Then we multiply 18.8 for PIEEEEEE

3.14x18.8= 59.03

Step-by-step explanation:

I hope this helps!!!!! Please mark me brainliest.

Math VOCAB Word Search

Answers

Answer:

distributive property is in the middle going straight up (read it going from the bottom up)

11 of 11
The mass of the gold ever mined is 1.65 x 108 kilograms.
The mass of all the silver ever mined is 1.411 x 10 kilograms
How much more silver has been mined than gold?
Give your answer in standard form.

Answers

Answer is probably 164.09X10^1

Which graphs cannot represent a proportional relationship? Explain how you know.
PLEASE THIS IS DUE AT 11p.m

(i put the other one in the wrong subject)

Answers

B and C
because the lines are not passing through the origin

Answer:

A and D

Step-by-step explanation:

because they pass through the origin


Find the length of AD in the diagram shown.
A) 7
B) 7.5
C) 9
D 16.5

Answers

Answer: 16.5

Step-by-step explanation:

The correct answer is given :) , for proof please select the picture in order to understand.

Amy had 60 carrots from her garden, she gives 18 to her friend, and 2 to her rabbits Cottonball. How many does Amy have now?

Answers

Answer:

She had 40 carrots.

Step-by-step explanation:

60 - 18 = 42 -2 = 40

If Amy has 60 carrots & gives away 18 that leaves her with 42 left . Then she gives away 2 more that leaves her with 40 . 60-18-2=40

Please help will give brainliest

Answers

Answer:

C, D, F

Step-by-step explanation:

I hope it helps, sorry if any wrong.

this is a prodigy question i'm stuck on

Answers

Answer:

1st part is 958

2nd part is 1024

Step-by-step explanation:

Answer:

a. 958 inches

b. 1024 inches

Step-by-step explanation:

a. The perimeter is 2(234+245) = 958 inches, by the formula of the perimeter of a rectangle.

b. This will increase the perimeter by 2 * 33 = 66 inches (because we're increasing in one dimension), so the answer is 958 + 66 = 1024 inches.

HELP ME PLEASE I WILL BE SOOOO THANKFUL

Type the missing number in this sequence:

2, 8, 32, 128, ___ , 2,048

Answers

Answer:

512....................

Someone plz help me

Answers

Answer:

8.5 i think

Step-by-step explanation:

Answer:

the answer would be 8.5 inches

Step-by-step explanation:

its 8and a half not 0.85 so its placed wrong

2/3 of the boats in the marina are white. 4/7 of the remaining boats are blue , and the rest are red . If there are 15 red boats, how many boats are in the marina?

Answers

Answer: The total boats in the marina are 105.

Step-by-step explanation:

Let the total number of boats in the marina = x

Given : Number of white boats in the marina = [tex]\frac{2}{3}x[/tex]

Number of blue boats in the marina = [tex]\frac{4}{7}\times (x-\frac{2x}{3})=\frac{4}{7}\times \frac{x}{3}=\frac{4x}{21}[/tex]

Number of red boats in the marina = [tex]x-\frac{2x}{3}-\frac{4x}{21}=\frac{3x}{21}[/tex]

Given : Number of red boats in the marina = 15

[tex]\frac{3}{21}\times x=15[/tex]

[tex]x=105[/tex]

Thus total boats in the marina are 105.

By working with fractions and proportions, we will see that there are 105 boats in the marina.

Working with the given information:

Let's say that there are N boats in the marina, we know that:

2/3 of these are white, then the proportion of boats that are not white is:

1 - 2/3 = 3/3 - 2/3 = 1/3.

Of these, 4/7 are blue, then the proportion of red ones is:

1 - 4/7 = 7/7 - 4/7 = 3/7

The total proportion of red boats is:

(3/7)*(1/3) = 1/7

And we know that there are 15 red boats, this means that:

(1/7)*N = 15

Solving for N we get:

N = 7*15 = 105

So there are 105 boats in the marina.

If you want to learn more about fractions, you can read:

https://brainly.com/question/11562149

Write using an exponent.

–5 • –5 • –5 • –5


A. (–4)5

B. 4–5

C. –54

D. (–5)4

Answers

Answer:

D

Step-by-step explanation:

I think the answer is D

The equation p = −5x2 + 100x − 250 models the profit p in dollars from selling pizza, where x is the price per pizza in dollars. What is the highest price you can charge per pizza to profit $100?

Answers

The highest price per pizza in a profit of $100 is approximately $15.48

The profit equation is given by:

p = -5 [tex]x^2[/tex]  + 100x - 250

Substitute p = 100 and solve for "x":

100 = -5 [tex]x^2[/tex]+ 100x - 250

To solve this quadratic equation, it can be rearranged it to standard form [tex](ax^2 + bx + c = 0)[/tex]

[tex]5x^2- 100x + 350 = 0[/tex]

Now, we can solve the quadratic equation using the quadratic formula:

[tex]x = \dfrac{(-b\pm \sqrt ({b^2 - 4ac)}}{2a}[/tex]

In our equation, a = 5, b = -100, and c = 350. Substitute these values into the formula:

x =[tex]\frac{(\sqrt{(-100)^2 - 4 \times 5 \times 350}}{2\times5}[/tex]

x= [tex]\dfrac{{100 \pm\sqrt{3000}}}{10}[/tex]

Thus, the two possible solutions for "x":

[tex]x_1[/tex] =[tex]\dfrac{100 + \sqrt{3000}}{10}[/tex]

[tex]x_2[/tex] =[tex]\dfrac{100 - \sqrt{3000}}{10}[/tex]

Calculating the values:

[tex]x_1[/tex]≈ 15.48

[tex]x_2[/tex] ≈ 4.23

The highest price per pizza that results in a profit of $100 is approximately $15.48 (rounded to two decimal places).

Learn more about equations here:

https://brainly.com/question/14686792

#SPJ4

X/5 = -3 x=____ help

Answers

i feel like a creep because I’m replying to most of your answers lol. But the answer is x = -15
X=-15 , when u divide it , you’ll get -3

6(y + 6) = 3y - 33 solve

Answers

Answer:

y=-23

Let's solve your equation step-by-step:

6(y+6)=3y−33

Step 1: Simplify both sides of the equation

6(y+6)=3y−33

(6)(y)+(6)(6)=3y+−33(Distribute)

6y+36=3y+−33

6y+36=3y−33

Step 2: Subtract 3y from both sides

6y+36−3y=3y−33−3y

3y+36=−33

Step 3: Subtract 36 from both sides

3y+36−36=−33−36

3y=−69

Step 4: Divide both sides by 3.

3y/3=−69/3

y=−23

Answer:

y=−23

I WILL GET A ZERO IF I DONT GET THIS RIGHT A) describe each two-dimensional figure cross section that results from slicing each three-dimensional figure
B)describe the two dimensional figure cross section that results from slicing the cylinder number 6 with a vertical cross-section
PLEASE HELP QUICK

Answers

Answer:

What is the two dimensional shape that is created when the shape provided is sliced horizontally? Explanation: A horizontal cut is a side to side cut. This shape is a right rectangular pyramid, which has a base of a rectangle and sides in the shape of triangles; thus, a horizontal cut would make a rectangle.

Step-by-step explanation:

Decide whether n = 9 is a solution to
the equation 2+n=7. Write yes or no

Answers

Answer:

No. The answer would be n=5

Step-by-step explanation:

You have to subtract the 2 from both sides to cancel it out on the left side. so you would be doing 7-2, not 7+2

Solve for X and Y

Sorry been having trouble understanding this

Answers

Answer:

[tex]x=16.4\ y=13.7[/tex]

Step-by-step explanation:

[tex][Kindly\ refer\ the\ attachment.]\\We\ are\ given\ that,\\\triangle ABC\ is\ a\ right-triangle\ and\ has\ it's\ legs\ x\ and\ z.\\It's\ altitude\ CD\ separates\ it\ into\ two\ triangles:\\\triangle BCD\ and\ \triangle ADC,\ both\ of\ which\ are\ right-triangles.\\Now,\\The\ Pythagoras\ Theorem\ tells\ us\ that:\\'The\ sum\ of\ squares\ of\ both\ the\ legs\ is\ equal\ to\ the\ square\ of\ the\\ hypotenuse'.\\Here,\\Lets\ consider\ three\ triangles\ separately.\\[/tex]

[tex]In\ \triangle ADC\ right\ angle\ is\ at\ \angle ADC.\\Hence,\\AC\ is\ the\ hypotenuse, and\ AD\ and\ DC\ are\ it's\ legs.\\Hence,\\AD^2+DC^2=AC^2\\Or,\\9^2+y^2=x^2\\\\Lets\ take\ the\ above\ equation\ as\ E_1.[/tex]

[tex]In\ \triangle BDC\ right\ angle\ is\ at\ \angle BDC.\\Hence,\\BC\ is\ the\ hypotenuse, and\ DC\ and\ DB\ are\ it's\ legs.\\Hence,\\DC^2+DB^2=BC^2\\Or,\\21^2+y^2=z^2\\Lets\ take\ the\ above\ equation\ as\ E_2.[/tex]

[tex]Now,\\In\ whole\ \triangle ACB\ right\ angle\ is\ at\ \angle ACB.\\Hence,\\AB\ is\ the\ hypotenuse, and\ AC\ and\ BC\ are\ it's\ legs.\\Hence,\\AC^2+BC^2=AB^2\\Or,\\x^2+z^2=(21+9)^2=30^2\\Lets\ take\ the\ above\ equation\ as\ E_3.[/tex]

[tex]Lets\ now\ gather\ the\ three\ equations:\\9^2+y^2=x^2\\21^2+y^2=z^2\\x^2+z^2=30^2\\Now,\\Lets\ pair\ and\ add\ E_1\ and\ E_2.\\Hence,\\(9^2+y^2)+(21^2+y^2)=(x^2)+(z^2)\\Hence,\\81+y^2+441+y^2=x^2+z^2\\Hence,\\2y^2+522=x^2+z^2\\Considering\ E_3,\\We\ already\ know\ that,\\x^2+z^2=30^2\\Hence,\\2y^2+522=30^2\\Hence,\\2y^2+522=900\\2y^2=900-522=378\\Hence,\\y^2=\frac{378}{2}=189\\Hence,\\y=\sqrt{189}=13.7\\[/tex]

[tex]Plugging\ in\ y=13.7\ in\ E_1,\\9^2+(13.7)^2=x^2\\81+189=x^2\\x^2=270\\x=\sqrt{270}=16.4[/tex]

Help please the problem is in the picture below.

Answers

Answer:

Step-by-step explanation:

C=pi times 4

C= 3.14 times 4

C=12.56

2/12 + 5/8 help me please

Answers

Answer:

19/24

Step-by-step explanation:

The answer is 19/24

In algebra, what is substitution?​

Answers

Answer:

In algebra, the operation of substitution can be applied in various contexts involving formal objects containing symbols; the operation consists of systematically replacing occurrences of some symbol by a given value. Substitution is a basic operation of computer algebra.

Step-by-step explanation:

Hope I helped!

Use the additive identity property to arrive at 6x=48.

Answers

8

→ 6x = 48

→ x = 48/6

→ x = 8

HOPE THIS HELPS YOU

Follw me = 10 thanks

Mark as brainliest = 10 thanks

1 thanks to me = 2 thanks

Giving out 100 POINTS FOR THIS QUESTION!! Please don’t write nfoenwownw or something like that for the points!! I really need help! I WILL MARK BRAINLIEST!


What are the x-intercepts of the quadratic function shown?
A) (-1, -2)
B) (3,-4) and (-5,-4)
C) (1, 0) and (-3, 0)
D) (0, 1) and (0, -3)

Answers

Answer:

C) (1,0), and (-3,0)

Step-by-step explanation:

The parabola intercepts the x axis at points (1,0) and (-3,0).

your answer is

C) (1,0), and (-3,0)

have a good dayyy!

WILL MARK BRAINLIEST!! PLZ HELP!! ASAP!
SELECT ALL THAT APPLY!!!! Sales tax is 7%. If c represents the retail cost of an item, which of the following expressions represent(s) the total cost of the item?
0.93 c
c - 0.07 c
1.07 c
0.07 c
c + 0.07 c

Answers

Answer:

c + 0.07c and 1.07c

Step-by-step explanation:

the sales cost will be added to the retail cost

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