Mathematics High School

Calculate the circumference of the following circles. Give your answers to 1 decimal place.

Answers

Answer 1

Answer:

a) 31.4 cm b) 22.0 cm c) 9.4 mm d) 18.8 m e) 1.6 m f) 28.3 cm g) 78.5 cm h) 9.7 m

Step-by-step explanation:

All it really is multiply the diameter which is the straight line through the center of the circle

C = d × \pi

Answer 2

The circumference of the circles is A. 31.4 cm, B. 22cm approx,

C. 9.4 mm, D. 18.88 m, E. 1.6 m, F. 28.3 cm, G. 78.5 cm, H. 4.1 m.

What is a circle?

A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle. Additionally, every angle has rotational symmetry around the center.

Given circles,

circumference of circle is 2πr in form of diameter = πd

where d is diameter,

A. given d = 10 cm

circumference = c = πd

c = 3.14 x 10

c = 31.4 cm

B. given, d = 7 cm

c= πd

c = 3.14 x 7

c = 21.98 cm = 22 cm approx

C.given, d= 3 mm

c = πd

c = 3.14 x 3

c = 9.4 mm

D. given d = 6 m

c = πd

c = 3.14 x 6

c = 18.8 m

E. given c = 0.5 m

c = πd

c = 3.14 x 0.5

c = 1.6 m

F. given d = 9 cm

c = πd

c = 3.14 x 9

c = 28.3 cm

G. given d = 25 cm

c = πd

c = 3.14 x 25

c = 78.5 cm

H. given d = 1.3 m

c = πd

c = 3.14 x 1.3

c = 4.1 m

Hence the circumference is as follows.

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Related Questions

Consider the graph of z3. Which lettered point represents z?

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Answer:B is correct for this specific question(5 of 11. C is correct for the other (4 of 11). Make sure to look at the picture of the graph before you answer.

Step-by-step explanation:

Answer:

Step-by-step explanation:

edg 2023

Rameez borrowed Rs. 20,000 from a bank at the rate 5% p.a compounded annually. What amount will he pay at the end of three years to clear the loan?

Answers

Answer:

23000

Step-by-step explanation:

If you multiply 20,000 * 0.05 (the percentage of the rate) you get 1000

This means that for 3 years he will pay an interest of 3000, plus the original loan 20000 which means he will pay 23000 :D

You have 480 grams of radioactive kind of carbon. How much will be left after 60 minutes if it's half-life is 20 minutes?

Answers

Answer:

60 grams

Step-by-step explanation:

480/8 = 60

Classify the following triangle. Check all that apply.

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Acute < 90
Right = 90
Obtuse > 90
This triangle is 104 degree so it is obtuse.

Isosceles = 2 same size
Scalene = no same size
Equilateral = all same size
You can see their is mark on 2 sides so it would be isosceles

how to find a 90 degree angle

Answers

Answer:

See explanation

Step-by-step explanation:

See if there's a right angle. A right angle will have a little box.

find an equation of the line that has a y-intercept of -1 that is parallel to the graph of the line x - 3y = 6

Answers

Answer:

y = [tex]\frac{1}{3}[/tex] x - 1

Step-by-step explanation:

x - 3y = 6 ⇔ y = [tex]\frac{1}{3}[/tex] x - 2

y = [tex]\frac{1}{3}[/tex] x - 1

x - 3y = 6
3y = x - 6
y = 1/3x - 2

Hence,

Answer = y = 1/3x - 1

Or x - 3y = 3
If you want it in the same form as before

learning task 1 identify if the if the given equation is a polynomial equation or not

Answers

Answer:

In particular, for an expression to be a polynomial term, it must contain no square roots of variables, no fractional or negative powers on the variables, and no variables in the denominators of any fractions.

Step-by-step explanation:

K
KL = 7, JL = 24, and JK = 25. Find tan J.

Answers

Answer:

Tan J = 0.2917

Step-by-step explanation:

Here, we want to find the value of tan J

Firstly, we need to understand that the numbers 24, 25 and 7 are a Pythagorean triple and as such the three measures represent the values of length of the sides of a right angled triangle

The tangent of an angle= measure of the opposite/measure of the adjacent

In the question, the opposite to point J measures 7 while the adjacent measures 24

So ;

tan J = 7/24

= 0.2917

9) Select the best method to solve the system.

4x+4y=16
2x-2y=6

*elimination
*substitution

Answers

Substitution because you need to substitute one of the variables

Answer:

elimination

Step-by-step explanation:

multiply 2nd eqn by 2 and take eqn 1 - eqn 2 and you'll get rid of x term, leaving only the y term and a constant, where you can then easily solve for y and sub to get x

Topic: simultaneous eqn

If you like to venture further, do check out my insta (learntionary) where I constantly post math tips! Thanks!

Using compatible numbers to estimate, which expression has a quotient of about 70?

A. 3,424÷49
B. 5,358÷89
C. 6,409÷79
D. 5,238÷89

Answers

A is the best option it results in 69.9

Answer:

A: 3,424/49

Step-by-step explanation: so its pretty simple if you ask me, if you do long division it is a lot more understandable. if you don't know how to do that then just use a calculator -_-

Composite numbers have less than two factors. more than two factors. exactly two factors. greater than or equal to two factors.

Answers

Answer:

More than two factors

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answers

Answer:

O 6x5/5x

Step-by-step explanation:

Answer:

It should be D. I'm not 100% sure though. But D is what I chose.

need help quick its my GCSE what is 1 +1 if you cant do it its okay LOL

Answers

THE ANSWER IS 2

PLS GIVE BRAINLIEST

Answer:

1 + 1 = 2

Step-by-step explanation:

I don't know why but I have been seeing a lot of questions like this lol

When x = 1/2, what is the value of 8x-3/x ?

Answers

Answer choice G.

1. Plug in 1/2 for x
2. Evaluate with PEMDAS
3. Solve

When writing the coordinates does it matter if we put x or y first?

Answers

Answer:

hii

Step-by-step explanation:

yes it does matter the The x-coordinate always comes first, followed by the y-coordinate.

Answer:To locate (2,5), move 2 units to the right on the x-axis and 5 units up on the y-axis. The order in which you write x- and y-coordinates in an ordered pair is very important. The x-coordinate always comes first, followed by the y-coordinate.

Step-by-step explanation: hope that this helps you! :)

Which quadratic equation has real solutions?
A. 4x^2 -5 = -7
B. 2/3x^2 +7 = 11
C. 3x^2 -1 = 8x^2+9

Answers

Answer:

B. 2/3x^2 +7 = 11

Step-by-step explanation:

A lollipop costs $0.90. A candy necklace costs $0.31. How much more does a lollipop cost
than a candy necklace?

I really need help !!!!!! Gibing 89 points

Answers

Answer:

$0.59 more than the candy necklace

Step-by-step explanation:

you subtract .90 from .31

ASAPPPP!!!
If you own 850 shares of a stock valued at
$87.43 per share, how much money would that
stock be worth if sold

Answers

Answer:

$74315.50

850* 87.43 = 74315.5

Describe the series of rigid transformations that maps pqs onto p’’’q ’’’s ’’’ .explain.

Answers

it’s triangular your welcome hint q

If f(x) = 3x2 - 2 and g(x) = 2x + 4, find (f - g)(x).

Answers

Answer:

(f - g)(x) = 3x² - 2x - 6

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra

Combining like termsStandard Form: ax² + bx + c = 0

Step-by-step explanation:

Step 1: Define

f(x) = 3x² - 2

g(x) = 2x + 4

(f - g)(x) is f(x) - g(x)

Step 2: Find

Substitute: (f - g)(x) = 3x² - 2 - (2x + 4)Distribute -1: (f - g)(x) = 3x² - 2 - 2x - 4Combine like terms: (f - g)(x) = 3x² - 2x - 6

When angles are complementary, the sum of their measures is 90 degrees. Two complementary angles have the measures of 2x - 10 degrees and 3x - 10 degrees. Find the measures of each angle

Answers

Answer:

2x - 10 = 34 degrees

3x - 10 = 56 degrees

Step-by-step explanation:

Since they're complementary, they'd equal 90-degrees.

Solve for x:

2x - 10 + 3x - 10 = 90

5x -20 = 90

5x = 110

x = 22

2(22)-10 = 34

3(22)-10 = 56

5x2 + 4x = 3(2 - x)

help me :p

Answers

Answer:

Step-by-step explanation:

5x^2+4x=3(2-x)

5x^2+4x=6-3x

5x^2+4x+3x-6=0

5x^2+7x-6

(5x^2-3x)+(10x-6)

x(5x-3)+2(5x-3)

(5x-3)(x+2)

x=3/5,-2

X=-4/7

Hope this helps, if it does pls give Brainlyest

Line CD passes through points (0, 2) and (4, 6). Which equation represents line CD?

y = 2x – 2
y = 2x + 2
y = x + 2
y = x – 2

Answers

Answer:

Step-by-step explanation:

We know that line CD passes through the two points (0, 2) and (4, 6).

First and foremost, let’s find the slope of the line. We can use the slope formula:

[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Where (x₁, y₁) and (x₂, y₂) are our two points.

So, let’s let (0, 2) be (x₁, y₁) and (4, 6) be (x₂, y₂). Substitute appropriately:

[tex]\displaystyle m=\frac{6-2}{4-0}[/tex]

Evaluate:

[tex]\displaystyle m=\frac{4}{4}=1[/tex]

Hence, our slope is 1.

Now, we can use the slope-intercept form:

[tex]\displaystyle y=mx+b[/tex]

Where m is our slope and b is our y-intercept.

Notice from our given points that we are given (0, 2).

So, our y-intercept is 2.

Therefore, we will substitute 1 for m and 2 for b. This yields:

[tex]\displaystyle y=(1)x+(2)[/tex]

Simplify:

[tex]\displaystyle y=x+2[/tex]

Hence, our answer is C.

10. Reka Rahim is employed at a restaurant. She has family medical coverage through the company's group
medical plan. The annual cost of Reka's family coverage is $3,700.00. The company pays 35% of the cost. How
much does Reka pay annually for medical insurance?
$3,700.00
$1,295.00
$2,405.00
$4,050.00

Answers

The answer is 2,405.00

Johnny says that 600 cm is not enough moulding for the baseboards that measure 5642 mm. Is he right in his statement? Explain

Answers

Answer:

Johnny is wrong.

Step-by-step explanation:

To compare two quantities, they must both be written in the same units. In this case, both must be in centimeters or millimeters. So, we must convert 600cm to millimeters or vice versa.

If we choose to use milimeters, we have

600cm=600cm [tex]\frac{10mm}{1cm}[/tex]

600cm = (600)(10) mm

600cm = 6000 mm

Now, we must compare 6000 mm with 5642 mm. We can see that 6000mm is greater than 5642 mm. hence, it is enough moulding for the baseboards.

In fact, 6000-5642 mm =358 mm would remain.

Help help help pls now
Give answer in cm squared

Answers

Answer:

13×11=143cm[tex]{2}[/tex]

Step-by-step explanation:

you do base times height

Answer:

110.5 cm²

Step-by-step explanation:

The figure is composed of a rectangle with a triangle on top.

Area of rectangle = 13 × 6 = 78 cm²

Area of triangle = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the height )

Here b = 13 and h = 11 - 6 = 5 cm , then

A = [tex]\frac{1}{2}[/tex] × 13 × 5 = 32.5 cm°

Thus

total area = 78 + 32.5 = 110.5 cm²

x-4y=8 in slope-intercept form

Answers

Answer:

y= 1 over 4 x -2

Step-by-step explanation:

hope you understand that

Answer:

y = [tex]\frac{1}{4}[/tex] x - 2

Step-by-step explanation:

y = mx + b is slope-intercept form of linear equation.

Solve x - 4y = 8 for "y"

- 4y = - x + 8

y = [tex]\frac{1}{4}[/tex] x - 2

What is the value of Negative 5 Superscript 6? –15,625 –30 30 15,625

Answers

Answer:

Step-by-step explanation:

The value of the expression (-5)⁶ is, 15,625. So option D is correct

What are expressions?

An expression is a sentence with at least two numbers or variables having mathematical operation. Maths operations can be addition, subtraction, multiplication, division.

For example, 2x+3

Given that,

The expression (-5)⁶

In mathematical terms, this means that the expression

⇒ (-5) x (-5) x (-5) x (-5) x (-5) x (-5)

⇒ 15625

So, the value of the expression (-5)⁶ is 15625.

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Jina and her husband are each starting a saving plan. Jina will initially set aside $650 and then add $135 every month to the savings. The amount A (in dollars) saved this way is given by the function =A+135N650, where N is the number of months she has been saving. Her husband will not set an initial amount aside but will add $585 to the savings every month. The amount B (in dollars) saved using this plan is given by the function =B585N. Let T be total amount (in dollars) saved using both plans combined. Write an equation relating T to N. Simplify your answer as much as possible.

Answers

Step-by-step explanation:

If A=650+135N; and B=585N,

then A+B= 650+135N+585N=650+620N

T=720N+650

A function assigns values to each element. An equation relating T to N can be represented by T=650+720N.

What is a Function?

A function assigns the value of each element of one set to the other specific element of another set.

The function which tells the amount that is been saved by Jina is given by the function A=650+135N, while the function which tells the amount that will be saved by her husband is B=585N.

Since the total saving amount is represented by T which is the sum of the two functions A and B. Therefore, the function of T can be written as,

[tex]\rm T=A+B\\\\T = (650+135N)+585N\\\\T = 650+135N+585N\\\\T = 650+720N[/tex]

Thus, an equation relating T to N can be represented by T=650+720N.

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Which point has coordinates (4, StartFraction 3 pi Over 4 EndFraction)
A
B
C
D

Answers

Answer:

Step-by-step explanation:

Answer:

It's C

Step-by-step explanation: I got it right.

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Calculate the circumference of the following circles. Give your answers to 1 decimal place.​

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Calculate the circumference of the following circles. Give your answers to 1 decimal place.