I don't know how to do this, please help

Step-by-step explanation:

Let us assume R be the radius of circle We know that, area of circle = πR2 81πr2 = πR2 R = √81 r R = 9r Circumference = 2 πr = 2 π (9r) = 18πr

Answer:

A circle of radius = 12 or diameter = 24 or circumference = 75.4 cm has an area of: 4.524 × 10-8 square kilometers (km²)

The area of the circular region will be 113 square centimeters.

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the circle in a two-dimensional plane is called the area of the circle.

The formula to calculate the area of the circle is given by:-

A = πr²

Given that the diameter of the circular region is 12 centimeters. The radius will be half of the diameter.

r = d / 2

r = 12 / 2 = 6

The area of the region will be calculated as below:-

A = πr²

A = π x ( 6 ) x ( 6 )

A = 113.09 square centimeters

Therefore, the area of the circular region will be 113 square centimeters.

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Answer:

the first equation

Step-by-step explanation:

Answer:

0.66? (0.67 if you rounded it)

Step-by-step explanation:

2*1/3

2/3 = 0.6666666666

Answer:

royal stuff

Step-by-step explanation:

I'm sorry if anyone's broken ur plate:(

Answer:

The answer is 0

Step-by-step explanation:

Deep thoughts

Answer:

y=mx+b

Step-by-step explanation:

thats the formula i think

Simplify

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

Exact Form:

4

√

17

Decimal Form:

16.49242250

Hope this helped

can i be marked as brainliest

Answer:

thousands

Step-by-step explanation:

the number would be 4,500

Answer:

B

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

4/5 your dividing 4 by 5, so answer is B :)

Answer:1.  you can compute the slope, m

2.  point (0,3) is the y-intercept; b=33

3.  y = mx + b, so put the numerical values in for m & b.  DON

Step-by-step explanation:

Answer:

1231.5

Step-by-step explanation:

I hope this help.

Answer: x=6

Step-by-step explanation:

Answer:

placeholder going to the bathroom brb

Step-by-step explanation:

Answer:

please brailiest :)

yan ang lahat ng answer good luck

Answer:

k=77

Step-by-step explanation:

put this as the equation k/11=7

what divided by 11 equals 7. Just multiply 11 and 7 to get the answer.

Rewrite the limand as

(1 - sin(x)) / cot²(x) = (1 - sin(x)) / (cos²(x) / sin²(x))

… = ((1 - sin(x)) sin²(x)) / cos²(x)

Recall the Pythagorean identity,

sin²(x) + cos²(x) = 1

Then

(1 - sin(x)) / cot²(x) = ((1 - sin(x)) sin²(x)) / (1 - sin²(x))

Factorize the denominator; it's a difference of squares, so

1 - sin²(x) = (1 - sin(x)) (1 + sin(x))

Cancel the common factor of 1 - sin(x) in the numerator and denominator:

(1 - sin(x)) / cot²(x) = sin²(x) / (1 + sin(x))

Now the limand is continuous at x = π/2, so

[tex]\displaystyle\lim_{x\to\frac\pi2}\frac{1-\sin(x)}{\cot^2(x)}=\lim_{x\to\frac\pi2}\frac{\sin^2(x)}{1+\sin(x)}=\frac{\sin^2\left(\frac\pi2\right)}{1+\sin\left(\frac\pi2\right)}=\boxed{\frac12}[/tex]

Answer:

86m²

Step-by-step explanation:

find area of triangle:

1/2 (bxh)

1/2(5x4)

1/2(20)

10

find area of rectangle:

bxh

12 x 8

96

subtract triangle's area from rectangle's area:

96-10

86

Jimmy stopped in Yewton for 45 minutes if Jimmy cycled at a steady speed of 24 km/h and his average speed for the whole journey, including the stops, was 18 km/h.

Distance is a numerical representation of the distance between two items or locations. Distance refers to a physical length or an approximation based on other physics or common usage considerations.

It is given that:

At 12:45 Jimmy left his home in Pinetrees and cycled to visit his grandmother in Oakville.

Let x be the total time Jimmy stops in Yewton:

Total time for the journey = 220 minutes (12:45 to 16:25)

As we know:

distance = speed×time

24(220 - 10 - x) = 18(220)

220 - 10 - x = 165

x = 210 - 165

x = 45 minutes

Thus, Jimmy stop in Yewton for 45 minutes if Jimmy cycled at a steady speed of 24 km/h and his average speed for the whole journey, including the stops, was 18 km/h.

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Answer:

a) 9000

b) 40

c) 630

d) 125

Step-by-step explanation:

if a region is bounded by two curves y=f(x) and y=g(x) on an internal a,b where 0<g(x)< f(x) then the volume of the solid obtained by the rotating region about the Y-axis is expressed by the integral of the difference of two functions: v= 2πbfax(x)jdx

Answer:

It's 2/5 <1/2.

Answer:

Part c

Step-by-step explanation:

In quadratic equations of real coefficients, the complex roots always occur in conjugate bases. It means, if, 2 + 3i is one of the roots and then the second root must be 2 - 3i.

The pair of values that can not be the roots of a quadratic polynomial is 2 + 3i and 2 + 3i

A polynomial is an expression consisting of the operations of addition, subtraction, multiplication of variables.

Polynomials can be classified based on degree as linear, quadratic, cubic, etc.

If the root of a quadratic polynomial is a complex number, then it must be in conjugate pairs.

The pair of values that can not be the roots of a quadratic polynomial is 2 + 3i and 2 + 3i

Find out more on polynomials at: https://brainly.com/question/4142886

Answer: See explanation (btw, the answer is always in bold letters)

Step-by-step explanation:

1.) 1 gallon for $1.99

1/2 gallon for $0.98

1 gallon would be 0.98 × 2 = 1.96

2 gallons for $3.98

1 gallon would be 3.98 ÷ 2 = 1.99

2.) 621 ÷ 4 = 155.25

He pays $155.25 each payment!

3.) V = s³

s = 3

V = 3³

3 × 3 × 3 = 27

V = 27 m³

4.) This is a rectangle; the area of a rectangle is l × b.

L = 6.9

l × b = a

6.9b = 28.29

Divide both sides by 6.9

b = 4.1

The missing length is 4.1 m

5.) False

Answer:

I think so.

Step-by-step explanation:

With letters, no, and some shapes would be reversed, like a triangle with lengths that are all different from eachother.

Answer:

1,632

Step-by-step explanation:

Answer:

A.    

Hope that helps!

Step-by-step explanation:

Answer:

the answer is A I believe good luck

Answer:

2/3

Step-by-step explanation:

Answer:

your answer will be 3.8928

Step-by-step explanation:

have a nice day bye ^_^

Answer:

(×+6)^2 + (y -7 ) ^2=81

Step-by-step explanation:

hope this helps