Solve for A if =3.14 and r=3.

Solve for A if ñ=3.14 and r=3.

Answers

Answer 1

Answer:

28.26

Step-by-step explanation:

The question gives the first three digits of π, which is 3.14, and it gives us the radius, which is 3. So, just substitute them into the formula and you’ll get 3.14(3^2). Solve it and the final answer is 28.26.

Hope this helps! :)

Related Questions

Math please help 20 points plus brainly if you can answer each question.

The perimeter of a rectangle is 40 cm. The length is 14 cm.
Let x = width of the rectangle.

Ravi says he can find the width using the equation 2(x + 14) = 40.
Fran says she can find the width using the equation 2x + 28 = 40.

Answer the questions to solve the equations and to compare the steps and solutions.

1. Which of these is the most helpful first step for solving Ravi's equation, 2(x + 14) = 40?

Circle the best answer.

Add 14 to both sides
Subtract 14 from both sides
Divide both sides by 2
Multiply both sides by 2

2. What would your next step be?

Write your answer in the space below.

3. Solve Ravi's equation, 2(x + 14) = 40, to find the width of the rectangle. Show your work.

Write your answer in the space below.

4. Which of these is the most helpful first step for solving Fran's equation, 2x + 28 = 40?

Circle the best answer.

Multiply both sides by 2
Subtract 28 from both sides
Divide both sides by 2
Add 28 to both sides

5. What would your next step be?

Write your answer in the space below.

6. Solve Fran's equation, 2x + 28 = 40, to find the width of the rectangle. Show your work.

Write your answer in the space below.

7. The two equations have different solution steps. Do they have the same solution? Use the distributive property to show why this answer makes sense.

Write your answer in the space below.

Answers

Answer:

number 1 is D

number 2 is distribute 2 into x and 14(multiplying) getting 2x+28=40

then subtract 28 from each side 40-28=12 after just simply divide 2x by its self and into 12 getting 6

number 3 is 12

number 4 is subtract 2 from both side

number 5 is divide

number 6 is 6

I hope this helps have a great day!

Step-by-step explanation:

Find mzC.
B
(2x – 12)
(9x – 26)
(4x + 43)

Answers

Answer:

m<C = 119°

Step-by-step explanation:

Create an equation to find the value of x.

(9x - 26)° = (2x - 12)° + (4x + 43)° (exterior angle theorem of a ∆)

Solve for x

9x - 26 = 2x - 12 + 4x + 43

Add like terms

9x - 26 = 6x + 31

9x - 6x = 26 + 31

3x = 57

Divide both sides by 3

x = 19

✔️m<C = 4x + 43

Plug in the value of x

m<C = 4(19) + 43

m<C = 76 + 43

m<C = 119°

If the graph of the linear equation ax-8y=15 has an x-intercept at (3,0), then what is the value of a?

-Please help me

Answers

ax-8y=15
a(3)-8(0)=15
3a=15
a=5

what is 20ft to 8yd in a fraction in simplest form

Answers

Answer:

5/6

Step-by-step explanation:

please help me
a piece of wire is 28cm in length is cut into two parts, each part bend to make a square. given that area of square is 416m^2. find the perimeter of each square.

Answers

Answer:

25.488 cm and 2.512 cm

Step-by-step explanation:

Note: the area of squares is 41 cm² but not 416 m², typo

Let the sides of squares be x and y

Based on given we have equations:

4x + 4y = 28x² + y² = 41

Simplify the first equation

4x + 4y = 28x + y = 7x = 7 - y

Substitute x to solve for y:

(7 - y)² + y² = 4149 - 14y + y² + y² = 412y² - 14y + 49 - 41 = 02y² - 14y + 8 = 0y² -7y + 4 =0

Solving we get:

y= 6.372 cm or y= 0.628cm

Then

x = 0.628 cm or x = 6.372 cm

Perimeter of each square is:

4*6.372 = 25.488 cm

and

4*0.628 = 2.512 cm

Find the value of x
Please help

Answers

Answer:

x=67

Step-by-step explanation:

Two ways to solve it:

1st way: Just looking at it, x is definitely not 180° because it’s to big of an angle, it is definitely not 113° because it’s still to big of an angle, and it’s also not 90° because it doesn’t form a right angle. So it must be 67°.

2nd way: Since two angles in a straight line add up to 180°, you can subtract 113° from 180° to find what x is. You can tell that 180° - 113° is equal to 67°

So either way, the answer is: x=67

Hope this helped! :)

67 according to the vertical angle postulate

Solve the following system of equations.
2x +y = 3 = 3
2 = 2y - 1 - 1

Answers

Answer: or (1,1)

Step-by-step explanation:

You can apply the Method of substitution.

Knowing that (second equation), you can substitute it into the first equation and solve for the variable y:

Now you need to substitute into the second equation to calculate the value of the variable x. Then:

Then, the solution is:

or (1,1)

27 divided by (3/4) square

Answers

The answer is 48. Becuase you need to multipluy and also didived the numbers by the quatum number of X.

There were 30 cars and 20 trucks in the parking garage. What is the ratio of cars to total vehicles?
A. 3 to 2
B. 7 to 2
C. 3 to 5
D. 2 to 3

Answers

I believe C. 3 to 5!

What is the value of the missing exponent in the equation 7.4 ÷ 10= 0.074?

Answers

the answer is 0.74 not 0.074

Step-by-step explanation:

7.4 ÷ 10 = 0.74

M5+m2+m3=180 whays the rwason

Answers

Answer: 45

Step-by-step explanation: the fub

A bank's loan officer rates applicants using their FICO credit score. The ratings are normally distributed with a mean of 711 and a standard deviation of 80. Find the credit score which separates the lower 80% from the top 20%. g

Answers

Answer:

The answer is "778"

Step-by-step explanation:

Given value:

[tex]\to \mu= 711\\\\\to \sigma= 80\\\\\to P(Z >0.84) = 0.20\\\\\to z = 0.84[/tex]

The formula for z-score:

[tex]\to x = z \times \sigma + \mu \\\\\to x = 0.84 \times 80 + 711 \\\\ \to x=67.2 +711\\\\ \to x= 778.2\\\\ \to x= 778[/tex]

Choose all the expressions that are equal to 5/9 multiply 8

Answers

The answer is 0.3 cause when you subtract all of it you can get it

If you are buying at item at a store for a price of $66, and there is a 5.1% tax added on top, what would be the total amount due at the register, to the nearest cent?

Answers

Answer:

$69.37

Step-by-step explanation:

Before Tax Price: $66.00

Sale Tax: 5.10% or $3.37

After Tax Price: $69.37

HELP!!! The probability that a male’s foot is between 10 and 12.5 inches is__
p(10

Answers

Answer:

I suggest you use Socratic, it solves questions like this.

Step-by-step explanation:

y = 6x + 11
2x - 3y = 7

Answers

2x - 3(6x +11) = 7
2x - 18x +33= 7
-16x = -26
x =13/8

We are performing a one-sample z-test about mean. The sample size is 64, the sample mean 56.7, the sample standard deviation is 30, and the testing mean is 60. What is the value of the test statistic?

Answers

Answer:

-0.880

Step-by-step explanation:

Mean X = 56.7

Sd = 30

N = sample size = 64

Null hypothesis:

H0:u = 60

Alternative hypothesis:

H1:u not equal to 60

This corresponds to a 2 tailed test. So we will have to use a z test with 1 mean, known population and standard deviation

Level of significance = 0.05

Z critical value = 1.96

The test statistic

Z = X - u/sd/√n

= 56.7 - 60/30√64

= -0.880

The test statistic is equal to -0.880

find the slope please help me

Answers

Answer: slope: 3 or 3/1

Step-by-step explanation:

Answer:

slope is 3 I think, I just started learning about this stuff too

Step-by-step explanation:

How many different triangles ABC can be formed if C=60∘, c=17√3 and a=34?

Answers

Answer:

Jordan, Its been 5 hours, whats the answer?

Step-by-step explanation:

There can be only 1 triangle formed by the given information.

What is triangle?

A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices. A triangle is also a polygon.

Given that, ABC can be formed if C=60∘, c=17√3 and a=34

Using the sine law for triangle,

A/sina = B/sinb = C/sinc

34/sina = 17√3/sin60°

⇒ sina = 90°

Since, The triangle ABC is a right triangle,

Hence, There can be only 1 triangle formed by the given information.

For more references on triangle, click;

https://brainly.com/question/2773823

#SPJ2

Consider the inequity

Answers

Answer:

What inequality??

Step-by-step explanation:

Answer:

where?

Step-by-step explanation:

Michelle is planting flowers in her garden. She wants the ratio of daisies to carnations to be 3 to 2. Michelle wants to plant a total of 30 flowers. How many daisies should she plant?

Answers

She should plant 18 daisies and 12 carnations.

Steps:

Divide 30 by 5 because 3+2 is 5

The answer is 6

The proportion for daisy is 3 so multiply 3 by 6 which is 18

For carnations multiply 2 by 6

Answer:

18 Daisies and 12 Carnations

Step-by-step explanation:

The total amount of flowers adds to be 30 therefore the amount of daises plus the amount of carnations should equal 30 (d+c=30). Then your ratio of daises to carnations is 3 to 2. Which means that you are going to have three daisies for every 2 carnations.

What is definition of and INDEPENDENT Vairable?

Answers

Answer:

a variable (often denoted by x) whose variation does not depend on that of another.

Step-by-step explanation:

Answer:

An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.

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