Mathematics High School

What is the radius of the copper circle?

What Is The Radius Of The Copper Circle?

Answers

Answer 1

9514 1404 393

Answer:

  (1+√2)/2 ≈ 1.207 cm

Step-by-step explanation:

The angled flats are at 45°, so the length in the direction of a vertical or horizontal radius is (1 cm)/√2 = (1/2)√2 cm. The remaining length of that radius is half the length of a flat, so is 1/2 cm. The total length of the radius is ...

  1/2 + 1/2√2 = (1+√2)/2 ≈ 1.207 cm

_____

In trigonometry terms, the length of the flat is ...

  1 cm = 2(r)(tan(45°/2))

so the radius is ...

  r = (1 cm)/(2·tan(22.5°))

  r = (1/2)cot(22.5°) ≈ 1.207

Related Questions

What is the number that when you multiply by six and subtract four to the product you get 32

Answers

Answer:

6

Step-by-step explanation:

32 + 4 = 36

36 / 6 = 6

Answer:

28

Step-by-step explanation:

HELP PLEASE LOL!!!!!!!!!

Answers

It’s the square root of:

64 - 16x + x^2 = (-8 + x)

Answer:

[tex]x - 8[/tex]

Step-by-step explanation:

Complete the square.

[tex] {x}^{2} - 16x + 64 = 0[/tex]

[tex] {x}^{2} - 16x = - 64[/tex]

[tex] {x}^{2} - 16x + 64 = - 64 + 64[/tex]

[tex](x - 8) {}^{2} = 0[/tex]

[tex]x - 8 = 0[/tex]

[tex]x - 8[/tex]

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Answers

Answer:

I uploaded a file hosting link for your question!

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Step-by-step explanation:

Cookies-x

Cakes-y

x+y=64; he sold a total of 64 cakes and cookies.

x=3y-4; he sold 4 less (-4) than 3 times (3y) the number of cakes he sold.

15 = -4p + 7


solving equation

Answers

Answer:

p = -2

Step-by-step explanation:

15 = -4p + 7

4p + 15 = 7

4p + 15 - 15 = 7 - 15

4p = -8

4p/4 = -8/4

p = -2

P= -5 So the answer to this question is going to be like I said in the beginning P= -5

Write the equation of a line that is perpendicular to x = -1 and that passes through the Point (8, -4).

Answers

Answer:

y = - 4

Step-by-step explanation:

x = - 1 is the equation of a vertical line parallel to the y- axis

The equation of a line perpendicular to it will therefore be a horizontal line parallel to the x- axis with equation

y = c

where c is the value of the y- coordinates the line passes through.

The line passes through (8, - 4 ) with y- coordinate - 4 , then

y = - 4 ← equation of perpendicular line

WILL MARK BRAINLIEST!!! Please solve the whole page with work!! It will be very much appreciated and I will heart the correct comment and give it 5 stars​

Answers

Answer:

its only 5 points tho :c

Step-by-step explanation:

help with number 2 pls it’s urgent!!’

Answers

Answer:

Step-by-step explanation:

24

y = -3x+ 12
y-intercept:
X-intercept:

Answers

Answer:

x= 4

y= 12

Step-by-step explanation:

i hope this helps :)

a small company that prints custom t shirts has 6 employees one of whom is the owner

Answers

He has 5 employees working for him.

2. A triangle has the angle measures 40 degrees, 60 degrees, and x degrees. If the sum of the angle measures is equal to 180 degrees, which equation could be used to correctly solve for x? Mark all that apply. (2 Points)
1. X - 100 = 180
2. 180 = 40 + 60 + X
3. 100x = 180
4. X + 100 = 180​

Answers

Answer:

2 and 4

Step-by-step explanation:

5 students are riding in a car that is driven by a parent. Oden wants to know the probability that he gets to ride in the front seat.

Answers

Answer:

1 out of 5  or 20% chance

Step-by-step explanation:

The common factors of 12 and 21 are?​

Answers

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

•Factors of 12 are 1, 2, 3, 4, 6 and 12 ... ... because 2 × 6 = 12, or 4 × 3 = 12, or 1 × 12 = 12

•Factors of 21: 1, 3, 7, 21

ABCD~EFGH. identify the pairs of congruent angles and the corresponding sides.

Answers

Answer:

We need a picture p-p

Step-by-step explanation:

I could use help please

Answers

.idhenfkakxjxnfnsjznndfo

Which graph could Gianna use to solve the equation 2^x=10?

Answers

Answer:

The top right graph

Step-by-step explanation:

This would the one since the line goes horizontally through ten. While it also goes up by a count of 2 for each point and over 1.

Answer:

top right

Step-by-step explanation:

i did it on I.M.

does anyone know the answer?

Answers

Answer:

A. g(x) = 42 - 0.6x

Step-by-step explanation:

find the length of the segment pls help

Answers

Answer: 5.1

Step-by-step explanation:

pythagorean theorem: a^2+b^2=c^2

c^2-b^2=a^2 (switch around some things)

(14.9)^2 - (14)^2 = x^2 (insert values)    c=14.9,b=14,a=x

222.01 - 196 = x^2

26.01 = x^2

5.1 = x

Answer:

x = 5.1

Step-by-step explanation:

The radius of the circle is 14.9

Using Pythagoras' identity in the right triangle on the left where the hypotenuse is the radius

x² + 14² = 14.9²

x² + 196 = 222.01 ( subtract 196 from both sides )

x² = 26.01 ( take the square root of both sides )

x = [tex]\sqrt{26.01}[/tex] = 5.1

What goes first in pemdas, addition or subtraction?

For example:


[tex]10w - 5w + 2w[/tex]
what goes first, 10w- 5w or 5w- 2w ??​

Answers

Addition. Pemdas stands for Parentheses Exponents Multiplication Division Addition Subtraction.

You buy 1.65 pounds of oranges and 2.25 pounds of plums. Oranges and plums sell for the same price per pound. The total​ cost, after using a 65¢​-off ​coupon, is ​$3.64. If c represents the cost of the fruit in dollars per​ pound, what equation could you use to find the value of​ c?

Answers

Answer:

C=(3.64+0.65)/(1.65+2.25)

Someone help? Will mark brainiest if right!

Answers

Answer: 45/36 = 1.25 = 5/4

Correct answer is 5/4

Step-by-step explanation: cos = adjacent / hypotenuse

I give Brian list some one help

Answers

Answer:

1

Step-by-step explanation:

becuse of the nubers you would take them and put them on the graph

Answer:

option (3)

Step-by-step explanation:

The inequality

- 8 ≤ x < 6

indicates that x can equal - 8 but not 6

In interval notation the square bracket [ is used for can equal and the parenthesis ) for cannot equal , then

[ - 8, 6 ) is the equivalent way to state the interval

which equation has solutions of -2 and 3?
A. y= x^2+x-6
B. y= x^2-x-6
C. y=x^2 +5x+6
D. y=x^2-5x+6​

Answers

Answer:

b. y= x^2-x-6

Step-by-step explanation:

i hope this helps :)

please help i don't understand

Answers

Answer:

Step-by-step explanation:

the answer is 3/7 ‍

Answer:

3/7

Step-by-step explanation:

You could also write this expression as 3(1/7):  "three times one seventh."

Multiplying the '1' by the '3' yields the desired fraction:  3/7

A large emerald with a mass of 812.04 grams was recently discovered in a mine. If the density of the emerald is 2.76 grams over centimeters cubed, what is the volume? Round to the nearest hundredth when necessary and only enter numerical values, which can include a decimal point. (6 points)

Answers

Step-by-step explanation:

The density formula is: Density =mass/vol

---> 2.76 =812.04 / Vol ---> Vol= 812.04 / 2.76= 294.22

The answer is 294.22

The volume of the emerald with mass 812.04 grams and density 2.76 grams/cubic cm is [tex]294.22 \: \rm cm^3[/tex] approximately.

How are density, volume and mass of a substance related?

Suppose that a finite amount of substance is there having its properties as:

mass of substance = m kgdensity of substance = d kg/m³volume of that substance = v m³

Then, they are related as:

[tex]d = \dfrac{m}{v}[/tex]

For this case, we have:

mass of substance = m = 812.04 gdensity of substance = d = 2.76 g/cm³volume of that substance = v cm³

Then, we have:

[tex]d = \dfrac{m}{v}\\\\v = \dfrac{m}{d} = \dfrac{812.04}{2.76} \approx 294.22 \: \rm cm^3[/tex]

Thus, the volume of the emerald with mass 812.04 grams and density 2.76 grams/cubic cm is [tex]294.22 \: \rm cm^3[/tex] approximately.

Learn more about volume, mass and density here:

https://brainly.com/question/952755

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Answers

Answer and Step-by-step explanation:

Let's put the information given into equations.

Let's also denote x as individual songs and y as albums.

Charlene -  6x + 2y = 25.92

Keisha -  4x + 3y = 33.93

Those above equations is answer choice option, which is D.

So, D is the correct Answer.

#teamtrees #PAW (Plant And Water)

17+b+=60
2/7 3/7 9/7 10/7 43 71 Answers Need Help ASap

Answers

B is 43 ............

Answer:

Answer should be 43

Step-by-step explanation:

take 17 from 60 and then because its just B it equals to 1 then you divide 43 from 1 and its just 43.

I need help with these questions, please show the work too

Answers

Answer:

multiply across divide up and down

Step-by-step explanation:

cross division and cross multiplication

help if you can plzz

Answers

Answer:

How?

Step-by-step explanation:

Questions about the domain (time in minutes) of the table of values:

(a) What is the minimum (lowest) time value in minutes?

(b) What is the maximum (highest) time value in minutes?

(c) What is the domain (all the time values on the x-axis)?

Need Help?

Answers

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determine the equation of line (AB)
A(I;1) and B(0;5)​

Answers

Given:

Consider the two points are A(1,1) and B(0,5)​.

To find:

The equation of the line AB.

Solution:

If a line passes through the two points, then the equation of the line is:

[tex]y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]

We A(1,1) and B(0,5)​. So, the equation of line AB is:

[tex]y-1=\dfrac{5-1}{0-1}(x-1)[/tex]

[tex]y-1=\dfrac{4}{-1}(x-1)[/tex]

[tex]y-1=-4(x-1)[/tex]

[tex]y-1=-4x+4[/tex]

Add 1 on both sides, we get

[tex]y=-4x+4+1[/tex]

[tex]y=-4x+5[/tex]

Therefore, the equation of the line AB is [tex]y=-4x+5[/tex].

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