Help me solve this please!!!!!

Answers

Answer 1

Answer:

[tex]s = 4\pi {r}^{2} \\ \frac{ds}{dr} = 8\pi r =8\pi(2) = 16\pi \\ from \: chain \: rule \\ \frac{ds}{dr} = \frac{ds}{dt} . \frac{dt}{dr} \\ but \: \frac{ds}{dt} = 1 \\ 16\pi = 1 \times \frac{dt}{dr} \\ \frac{dt}{dr} = 16\pi \\ \frac{dr}{dt} = ( \frac{dt}{dr} ) ^{ - 1} \\ \frac{dr}{dt} = \frac{1}{16\pi} [/tex]

Related Questions

Solve each equation please?

6) 3x - 5 = 10

7) 36 = 4x + 12

8) 3(x + 2) = 36

9) 7(2x - 15) = 63

Answers

6) Answer: x = 5

7) Answer: x = 6

8) Answer: x = 10

9) Answer: x = 12

hope it helps.

True or False: When conducting a survey of a group of people, you must interview every person in that population.

Answers

The answer to this is true

Find the length of the rectangle.

7 mi

Area = 56 sq mi

1

A. 21 mi

B. 8 mi

C. 30 mi

D. 4 mi

Answers

Área # 56 sq mi
1
A) 21 mi

the answer is 21 mi which is A

The locations, given in polar coordinates, for two ships are (8 mi, 63°) and (8 mi, 123°). Find the distance between the two ships.

Answers

Answer:

It can therefore be noted that all angles are equal and thus the resulting triangle is actual an equilateral triangle and thus all the sides are equal. It can be concluded that the ships are 8 miles apart.

Please help :) Giving brainliest.

Answers

Answer:

Step-by-step explanation:

The group of decimals in ascending order is:
A 261,2; 261,3; 261,342; 261,4
B. 261,2; 261,3; 261,4; 261,342
С 261,342; 261,4; 261,3; 261,2
D 261,4; 261,342; 261,3; 261,2
E 261,03; 261, 30; 261,33; 261,003

Answers

Answer:

Step-by-step explanation:

it's just going from least to greatest

Which letters are true

Answers

Step-by-step explanation:

i would say both b and c are the the correct ones

All of the following numbers are rational except _____.

Answers

Answer:

D 1.44

Step-by-step explanation:

the answer is the last one 1.44

Answer:

√17

Step-by-step explanation:

√121 = 11

√25 = 5

√1.44 = 1.2

√17 is an irrational number/

-12=-8z+12 please need help

Answers

Answer:

z=3

Step-by-step explanation:

-12=-8z+12

-12-12=-8z

-24=-8z

-24/-8=z

z=24/8

3=z

z=3

Answer and Step-by-step explanation:

To solve for z, we have to get everything away from z.

First, subtract 12 from both sides of the equation.

-24 = 8z

Now, divide each side by 8.

-3 = z

z is equal to -3 (negative three).

#teamtrees #PAW (Plant And Water)

ANSWER ONLY IF YOU KNOW ( no links or ill report you)

Answers

Step-by-step explanation:

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

[tex]C=2*\pi *28[/tex]

[tex]C=56\pi[/tex]

Yes, it is because the circumference is always [tex]2\pi[/tex] times the amount of the radius.

Evaluate 3.2x0.4/
0.016?

Answers

The answer is down below this

How many people were surveyed in the bar graph 9 30 18 25

Answers

Answer:

Step-by-step explanation:

9 + 9 + 6 + 5 + 1 = 30

I can help with financial algebra if not just a freebie

Answers

Answer:

Well, okay then. I'll consult you if I ever need help. Thanks friend. xx

The sum of Theorem states that the sum of all angles in a triangle is_____.

Answers

Answer:

180°

I hope it's helps you

please help me solve this

Answers

9514 1404 393

Answer:

sin(θ) ≈ -0.92

cos(θ) ≈ 0.38

tan(θ) = -2.40

Step-by-step explanation:

Let r represent the distance of the point from the origin. The Pythagorean theorem tells us ...

r² = (5)² + (-12)²

r² = 169

r = √169 = 13

The trig relations for a point on the terminal ray are ...

(x, y) = (r·cos(θ), r·sin(θ))

Then ...

sin(θ) = y/r = -12/13 ≈ -0.92

cos(θ) = x/r = 5/13 ≈ 0.38

tan(θ) = y/x = -12/5 = -2.40

The Great Park Balloon in Orange County, California, is a big orange sphere with a radius of 36 feet. Find its surface area (in square feet). (Use 3.14 for . Round your answer to one decimal place.)

Answers

Answer:

16286

Step-by-step explanation:

the formula for surface area for a sphere is 4 pi r^2

So substitute for r and you get 4pi*1296 then do 3.14 * 4 * 1296 and you get 16286.02 then round it to one decimal (it cancels out) and you get 16286.

What is the angle of A and B?

Answers

Answer:

a=90

b=30

Step-by-step explanation:

16. Garrett can complete four laps around the
track in 7 minutes and 45 seconds. How
many full laps can he complete in 1 hour

Answers

Answer:

Step-by-step explanation:

45 seconds = 45/60 = 0.75 minutes

7 minutes 45 seconds = 7.75 minutes

One hour = 60 minutes

Number of full laps = 60/ 7.75 = 6000/775 = 7.74

He can make 7 full laps in one hour

Convert. (13/5) into a mixed number.

Answers

Answer:

2 3/5 :)

Step-by-step explanation:

Students in a school are asked to pick either football, rugby or tennis to play in their lesson.

The number of students who picked football and rugby are in the ratio of 5:4
The number of students who picked rugby and tennis are in the ratio of 12:25

125 students picked tennis.Work out how many students picked football.

Answers

Step-by-step explanation:

let x be rubgy liked let y football liked

x/125=12/25

ansx=60

again

y/60=5/4

ans y=75

football liked students are 75

Solve for variable.

3k = 36

Answers

your answer is k=12. 3x12=36

Answer:

k = 12

Step-by-step explanation:

Given 3k = 36 we want to isolate the variable (k) using inverse operations

So we want to get rid of the 3

3k = 3 times k (multiplication)

The inverse of multiplication is division so to get rid of the * 3 we want to divide by 3. Remember whatever we do to one side we have to do to the other side so we are going to divide each side by 3

3k/3=k

36/3=12

we're left with k = 12

Tina walked her dog 12 blocks. This is twice the number of blocks she walked yesterday. How far did Tina walk her dog yesterday?

Answers

Answer: Hello, your Answer is Below ^^

Your Answer Is 6

Step-by-step explanation:

I Got the answer 6 Because 6 x 2 = 12

Tina Walked 12 blocks and Half of 12 Is 6

Hope this helps you!

Have a great Day!

~Rainbow~

Answer:

the correct answer is 6

Step-by-step explanation:

since twice = 2 you'll need to do 12 divided by 2

which is equal to 6.

or you can simply just think what number is twice in 12.

Please help me with this problem

Answers

Answer:

Step-by-step explanation:

Please try and answer my questions aswell :) have good day

Which of the coordinate points below will fall on the line with the consent of the personality is 1/4 select all that apply

Answers

Answer:

A, C, and D

Step-by-step explanation:

Constant of proportionality, k = y/x

Thus, all points on a line will have the same value of k.

Here, the value of k is given as ¼.

The coordinate points that will fall on a line where k = ¼, will give us the value of ¼ when we divide its y-coordinate by its x-coordinate.

Thus:

(4, 1) will give us k = y/x = ¼

(12, 3) will give us k = y/x = 3/12 = ¼

(20, 5) will give us k = y/x = 5/20 = ¼

Therefore, the options that apply are: A, C, and D

What is the product of -3 and 5

Answers

Answer:

-15

Step-by-step explanation:

have a good day/night

may i please have a branliest

middle school math problem.....

Answers

Answer:

hi bro how are yuo join this meeting i will say you ans

Step-by-step explanation:

Answer:

Part A: 27.32

Part B: 4.92

Step-by-step explanation:

25.30*.08(or 8%) is equal to 2.024

25.30+2.024=27.324=27.32

32.24-27.32=4.92

What is 1/6 as a decimal?
Give your answer rounded to 3 decimal places.

Answers

Answer:0.16666

Step-by-step explanation:

As we know that

Therefore, 1/6 or 0.16666... can be written rounding off to three decimal digits such as: 0.1666... 0.167 (rounding off to three decimal digits)

What is the answer please help no links I will report

Answers

Answer:

links.

Step-by-step explanation:

Answer:

the answer is essentially A

Write an expression representing the perimeter of the rectangle as the sum of the four side lengths.

Answers

Answer:

2x+ 2(x+4/5)

Step-by-step explanation:

Perimeter = 2l + 2w

l = x

w = x+4/5

this figure to solve the problems.
3.65 m
2.24 m
2.57 m
2.24 m
3.65 m
Part A. Name the polygon.
cm
Part B. Enter the perimeter, in centimeters, of the
figure.
cm

Answers

Answer:

(a) Pentagon

(b) Perimeter= 1435cm

Step-by-step explanation:

Given

[tex]Side\ lengths: 3.65m, 2.24m, 2.57m, 2.24m, 3.65m[/tex]

Though the question has a missing attachment, it can still be answered

Solving (a): The name of the polygon

Since we are given 5 side lengths, we can say that the polygon has 5 sides.

Such polygon is referred to as, a pentagon

Solving (b): The perimeter (in cm)

To do this, we simply add up the side lengths

[tex]Side\ lengths: 3.65m, 2.24m, 2.57m, 2.24m, 3.65m[/tex]

[tex]Perimeter= 3.65m+ 2.24m+ 2.57m+ 2.24m+ 3.65m[/tex]

[tex]Perimeter= 14.35m[/tex]

Convert to cm

[tex]Perimeter= 14.35*100cm[/tex]

[tex]Perimeter= 1435cm[/tex]

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