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

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 :)

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)

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.

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

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

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:

does anyone know the answer?

Answers

Answer:

A. g(x) = 42 - 0.6x

Step-by-step explanation:

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

Answers

Answer:

We need a picture p-p

Step-by-step explanation:

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

Answers

Answer:

x= 4

y= 12

Step-by-step explanation:

i hope this helps :)

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

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

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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)

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

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

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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].

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.

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.

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:

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 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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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:

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

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Answers

Answer:

I uploaded a file hosting link for your question!

See below for more details!

bît.ly/peoplefallfortraps

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.

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.

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]

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

I could use help please

Answers

.idhenfkakxjxnfnsjznndfo

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

help with number 2 pls it’s urgent!!’

Answers

Answer:

Step-by-step explanation:

24

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