Mathematics College

Find the circumference of a circle whose
area is 49pi sq units.​

Answers

Answer 1

Answer: C=2πr

r Radius

Related Questions

Paul has $78 in the bank and saves $30 each week. What is the initial value? Be sure to use negative signs if needed.

Answers

Answer:

The initial value is $78

Step-by-step explanation:

Given

[tex]Base\ Amount = \$78[/tex]

[tex]Additional = \$30[/tex] (weekly)

Required

Determine the initial value

The initial value is the amount he has in its bank account before making his weekly savings.

From the question, we have that his initial balance is $78.

Hence, the initial value is $78

However, his weekly balance can be expressed as:

[tex]Balance = Base\ Amount + Additional * number\ of weeks[/tex]

Represent number of weeks with x; So, we have:

[tex]Balance = 78 + 30 * x[/tex]

[tex]Balance = 78 + 30 x[/tex]

To paint, a House, a painting company charges a flat rate of $400 for supplies, plus 60$ for each hour of labor. Write an equation for this situation.

Answers

y=60x+400

60 is the slope because they get payed $60 hourly, so the money is constantly increasing. 400 would be the y-intercept because it’s a constant. It doesn’t increase, it stays the same.

Harry needs 21 square meters for every 6 wizard cloaks he makes

Answers

Answer:

Harry needs 21 square meters of fabric for every 6 wizard cloaks he makes then Equal ratios = 21/6 = 7/2 = 14/4. Step-by-step explanation: Complete Question is : Complete the table using equivalent ratios.

Step-by-step explanation:

What is the hourly utilization rate of each resource if the bottleneck(s) work nonstop during a 10-hour day?

Answers

Answer:

100%

Step-by-step explanation:

Utilization rate =

Hours worked / total working hours per day

Since the bottle works nonstop during a 10-hour day, it worked 10 hours

Utilization rate in percentage = (10/10)×100%

= 100%

What is the Greatest Common Factor of 12 and 28
O2
3
06
4

Answers

Answer:

The GCF of 12 and 28 is 4.

Step-by-step explanation:

hope this helps

The factors of 12 are: 1, 2, 3, 4, 6, 12

The factors of 28 are: 1, 2, 4, 7, 14, 28

Answer:

The GCF is 4.

Step-by-step explanation:

One-third of a number t is equal to 7.
Write the word sentence as an equation then solve

Answers

Answer:

21

Step-by-step explanation:

One third of the number can be represented by 1/3t.

To make an equation, set this equal to 7.

1/3t = 7

Then, solve for t by dividing each side by 1/3:

1/3t = 7

t = 21

So, the number is 21.

PLEASE HELP ME SIMPLIFY THIS PLEASE SHOW WORK TO! THANK YOU 7x - 4x + 3

Answers

Answer:

7x - 4x + 3

3x + 3 = 6x

Step-by-step explanation:

7 - 4 = 3 meaning 7x -4x would be 3x as they are similar terms and then you add + 3 making it 6x

34 + 10 + 100 = 12 x 12 Is this correct?

Answers

Answer:ig so

Step-by-step explanation:34+10+100=144

12x12=144 same thing

Answer:

yes

Step-by-step explanation:

i guess

Use the Chain Rule to find the indicated partial derivatives. w = xy + yz + zx, x = r cos(θ), y = r sin(θ), z = rθ; âw âr , âw âθ when r = 4, θ = Ï2

Answers

Answer:

δw/δr = 4π

δw/δθ = -8π

Step-by-step explanation:

Given the following functions

w = xy + yz + zx, x = r cosθ y = r sinθ, z = rθ where r = 4 and θ = π/2

We are to find δw/δr and δw/δθ

δw/δr = δw/δx•δx/δr + δw/δy•δy/δr + δw/δz•δz/δr

δw/δx = y+z

δx/δr = cosθ

δw/δy = x+z

δy/δr = sinθ

δw/δz = y+x

δz/δr = θ

Substitute the given values into the formula

δw/δr = (y+z)cosθ+(x+z)sinθ+(y+x)θ

Substitute the value of x, y and z in terms of theta into the resulting function

δw/δr = (y+z)cosθ+(x+z)sinθ+(y+x)θ

δw/δr = (rsinθ+rθ)cosθ+(rcosθ+rθ)sinθ+(rsinθ+rcosθ)θ

Substitute r = 4 and θ = π/2

δw/δr = (4sinπ/2+4π/2)cosπ/2+(4cosπ/2+4π/2)sinπ/2+(4sinπ/2+4cosπ/2)π/2

Note that cos π/2 = 0 and sinπ/2 = 1

δw/δr = (4+2π)(0)+(0+2π)(1)+(4(1)+4(0))π/2

δw/δr = 0+2π+4π/2

δw/δr = 2π+2π

δw/δr = 4π

For δw/δθ

δw/δθ = δw/δx•δx/δθ + δw/δy•δy/δθ + δw/δz•δz/δθ

δw/δx = y+z

δx/δθ = -rsinθ

δw/δy = x+z

δy/δθ =rcosθ

δw/δz = y+x

δz/δθ = r

Substitute the given values into the formula

δw/δθ = (y+z)-rsinθ+(x+z)rcosθ+(y+x)r

Substitute the value of x, y and z in terms of theta into the resulting function

δw/δθ = (y+z)-rsinθ+(x+z)rcosθ+(y+x)r

δw/δθ = (rsinθ+rθ)-rsinθ+(rcosθ+rθ)rcosθ+(rsinθ+rcosθ)r

Substitute r = 4 and θ = π/2

δw/δθ = (4sinπ/2+4π/2)-4sinπ/2+(4cosπ/2+4π/2)4cosπ/2+(4sinπ/2+4cosπ/2)(4)

Note that cos π/2 = 0 and sinπ/2 = 1

δw/δθ = (4+2π)(-4)+(0+2π)(0)+(4(1)+4(0))(4)

δw/δθ = -16-8π+0+4(4)

δw/δθ = -16+16-8π

δw/δθ = -8π

Which of the restricted domains will produce an inverse function for tangent ?
X=-pi, x= pi
X=-pi/2, x=pi/2
X=0, x=pi/2
X=0, x=2pi

Answers

Answer: B) x=-pi/2 , x=pi/2

Step-by-step explanation:

Just did it!

Answer:

B

Step-by-step explanation:

Edge 2020

Type the correct answer in each box. Use numerals instead of words. Function g is a transformation of function f. What is the equation of function g? g(x) =___ f(x)

Answers

Answer:

the answer is -3 I just took the test and got 100%

Answer:

-3

Step-by-step explanation:

Answer is correct from plato, other guy is right too.

the research director at NASA must choose five experiments for the next space shuttle. Twelve experiments are proposed. in how many ways can this decision be made if order does not matter.. how many ways can this be arranged?

Answers

Answer:

95040

Step-by-step explanation:

This is the combination of 5 experiments out of 12

Formula to find the combination:

P(n,r) = n!/(n-r)!P(12,5) = 12!/(12-5)! = 12!/7! = 12*11*10*9*8 = 95040

So this can be arranged in 95040 ways

Look at the flag of Sweden below, then answer the question based on the appearance of the lines on the flag
help please help

Answers

Answer:

B. They are perpendicular to each other

Step-by-step explanation:

Perpendicular Lines are lines that intersect each other and make a (or multiple) right angles or 90°.

Answer:b

Step-by-step explanation:

Samantha has 146 ft of yarn. She wants to cut the yarn into equal pieces to give her 18 students. How much yarn will she give each student?

Answers

Answer

answers is 267 bits oof yard

Step-by-step explanation:

Answer:

146 divided into 18 would be 8.11111111111.. and so on.

Step-by-step explanation:

Hope that helps :)

3
Sean scored 48 points in 16 basketball games
last season. Approximately how many points did
Sean average per game?
A. .33
B. 3
C. 64
D. 768

Answers

Answer: a

Step-by-step explanation:

If x=8, what is the value of x(19-x)?

Answers

Answer:

88

Step-by-step explanation:

we have value of x=8

x(19-x)

8(19-8)

8×11

88 ans

Find the probability the next person you meet was born either on a Monday or a Friday.

Answers

Answer:

Probability = 0.2857 (Approx)

Step-by-step explanation:

Given:

Total number of days in a week = 7

Monday or Friday = 2  days

Find:

Probability

Computation:

Probability = Monday or Friday / Total number of days in a week

Probability = 2/7

Probability = 0.2857 (Approx)

helppppp please will give brainlist ​

Answers

Answer:

D or answer 4                   y=-5/2x+7

Step-by-step explanation:

Well we can first start of by finding the y-intercept.

Note that when x=0, you can find your y-intercept.

Knowing this, and looking at the table, 7 is the y-intercept because when y=7, x=0.

So we can eliminate choices 'a' and 'c,' or answers 1 and 3, because they have the y-intercept as -7, when it's just 7.

Please know that in the equation:

y = mx + b

y = y-coordinate or any given point

mx = slope

b = y-intercept

Now we must find slope

To find the slope we need to do:

(y2 - y1) / (x2 - x1) or rise/run

The two coordinates I choose to use is (0, 7) and (6, -8).

(-8 - 7) / (6 - 0) = -5/2

-5/2 is the slope

Finally, look for an equation that has 7 as the y-intercept and -5/2 as the slope.

Answer: D or answer 4

PLEASE HELP URGENT WILL GOVE BRAINLIEST

Answers

it is b and there is no explanation

4xº
(2x – 6°
33°
A. x= 31, y = 91
B. x= 31, y = 116
C. x = 56, y=91
D. x= 56, y = 116

Answers

Answer: X=31 y=92

Explanation:

The following statements as true or false.


a. m23 + m25 = 180

b. m22 + m26 = 180

C. m28 = m_1
Which ones are true and false plzzzzz this is urgent

Answers

Answer:

True

False

True

Step-by-step explanation:

Interior angles are supplementary

Corresponding angles makes mangle2 and mangle6 the same deg

mangle1 = mangle5 (corresponding angles)

mangle5 = mangle8 (vertically opposite angles)

To visit his grandmother, Michael takes a motorcycle 3.85 kilometers and a horse 3.32 kilometers. In total, the
journey takes 50.54 minutes.
How many kilometers is Michael's journey in total?

Answers

Answer:

7.17

Step-by-step explanation:

sorry for the first answer

7.17 kilometres is Michael's journey in total.

Given that, the number of kilometres Michael travelled on motorcycle =3.85 kilometres and on a horse 3.32=kilometers.

How to find the total distance travelled?

Total distance means the actual distance between the places from which the material is transported to the destination place.

The total distance travelled is the path taken by a body to get from an initial point to an endpoint in a given period of time.

Now, total distance travelled=3.85+3.32=7.17 kilometres.

Therefore, the distance travelled is 7.17 kilometres.

To learn more about distance visit:

https://brainly.com/question/15172156.

#SPJ2

Which list represents integers ordered from least to greatest?
A 4,-7, -6, 10
B 4, -5, -6, 10
C -7, -6, 4, 10
D-6, 4, 5, 10
OA
B
OC
D

Answers

Answer:
It’s C



Why:
Because i’m smart duh

Answer:

C,-7,-6,4,10

Step-by-step explanation:

I guessed and that is all I did

FOR BRAINLIEST! which expression is the simplest form of - (4x^3+x^2) + 2(x^3-3x^2)?

Answers

Answer D

step by step

TRUE OR FALSE:
If 2x−5 = 13, then x=4

Answers

Answer:

False

Step-by-step explanation:

Add 5 to isolate varible to get 2x=18. Dived by 2 to get x=9.

Triangle ABC is an isosceles triangle. Angle A is the vertex angle. AB=8x-8 and AC=6x+9 find the length of one of the legs

Answers

Answer:

tge length is 14 make me brainliest

Step-by-step explanation:

I did it in a test and hit it correct

Make it into slope-intercept form

Answers

Answer:

y=1/2x-1

Step-by-step explanation:

y=mx+b where m equals the slope and b equals the y-intercept. Hope this helps!

Which of the following angles is not congruent to angle 3

Answers

Answer:

angle 2

Step-by-step explanation:

they aren't equal.

Angle 3 is not equal to angle 2.

What is property of parallel lines?

Properties of Parallel Lines Cut by a Transversal

For the parallel lines cut by a transversal, the following properties hold true:

Two lines cut by a transversal line are parallel if the corresponding angles so formed are equal. In general, the corresponding angles are in relative positions and lie along the same side of the transversal.Two lines cut by a transversal line are parallel if the alternate interior angles so formed are equal. In general, the pairs of the alternate interior are found in the inner side but lie on the opposite sides of the transversal.Two lines cut by a transversal line are parallel if the alternate exterior angles so formed are equal. In general, the pairs of alternate exterior angles are found on the outer side but lie opposite each other.

As,

angle 3 = angle 1    (Corresponding angle)

angle  3 = angle 6  ( alternate interior angle)

angle 3= angle 8  (vertically opposite angle)

But there is no relation between angle 3 and angle 2.

Learn more about parallel lines here:

https://brainly.com/question/16701300

#SPJ6

WILL GIVE BRAINLIEST! 2 QUESTIONS FOR 6 POINTS +3 TO WHOEVER ANSWERS QUICKEST! AND THE HAVE A GOOD EXPLAINATION!

1: (THE PICTURE)

POSSIBLE ANSWERS:


Line A

Line B

Line C

Line D


2: The F-16 Fighting Falcon, a United States fighter jet, can travel 3680 miles in 4 hours. In miles per hour, what is the speed of the F-16?

POSSIBLE ANSWERS:

1. 900mph

1. 736mph

3. 460mph

4. 0.001086mph

5. None of the Above

Answers

So pretty much for the first question it is line A since the steeper the line the faster something goes as in this case A is covering the most questions at the fastest rate.


For the second one it’s none of the above because 3680/4=920.


Hopefully I don’t get this wrong :/

What is the solution of the proportion x−1/2 = x−4/5 ?

Answers

This statement is false... what exactly did you mean because this is not a correct statement
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