The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 1000 years?

Answers

Answer 1

Answerc

Step-by-step explanation:

simple


Related Questions

helpp pppppppppp ppp

Answers

Step-by-step explanation:

use the law of sine :

a/sin(A) = b/sin(B) = c/sin(C)

and therefore also

sin(A)/a = sin(B)/b = sin(C)/c

where the lines and corresponding angles are always opposite of each other.

and remember, the sum of all angles in a triangle is always 180°.

and sin(x) = sin(180-x).

so, we have

sin(32)/43 = sin(B)/53

sin(B) = 53×sin(32)/43 = 0.653156302...

B = 40.77999844...° ≈ 41°

C = 180 - 32 - 40.77999844... = 107.2200016...° ≈ 107°

43/sin(32) = c/sin(107.2200016...)

c = 43×sin(107.2200016...)/sin(32) = 77.507143... ft

≈ 78 ft

B' = 180 - B = 139.2200016...° ≈ 139°

C' = 180 - 32 - 139.2200016... = 8.779998438...° ≈ 9°

43/sin(32) = c'/sin(8.779998438...)

c' = 43×sin(8.779998438...)/sin(32) = 12.38595519... ft

≈ 12 ft

6) Find the approximate perimeter of the following shape. Use 3.14 for pi

Answers

Answer:

where is the shape ???????

find x.


please help whoever egts right gets brainliest

Answers

Answer:24

Step-by-step explanation:

a^2+b^2=c^2

c^2 has to be 26 because it is the hypotinuce. 10 could take the place of a^2 or b^2, it dose not matter.

a^2+10^2=26^2

a^2+100=676

subtract 100 from both sides

a^2=576

sqrt576

a=24

x=a

x=24

How many kilograms in 1 1/2 pounds?

Answers

0.68 kilograms are in 1 1/2 pounds

Answer:

67.5 kgs.

Step-by-step explanation:

1 pound = 0.45 kg

1 1/2 pounds = 0.45 + 1/2 * 45

= 67.5 kgs.

Convert the decimal 3.88888… to a fraction.

Answers

Answer:

The answer is 35/9

Step-by-step explanation:

PLEASE help me violate brainly community

Which fraction make comparison 3/4

Answers

Answer:

6/8, 12/16, and so on. I wasn't sure how you wanted this question to be answered, but 3/4 is also 0.75

Step-by-step explanation:

6/8 9/12 12/16 15/20 18/24 21/28 24/32 27/36 ect

Help me pls lol
I don’t understand

Answers

J = (5,6)
K = (5,1)
L = (10,2)

[tex]J'= (-5,-6)[/tex]

[tex]K'=(-5,-1)[/tex]

[tex]L'=(-10,-2)[/tex]

See graph below.

[tex]Hope[/tex] [tex]this[/tex] [tex]helps![/tex] [tex]Have[/tex] [tex]a[/tex] [tex]good[/tex] [tex]day![/tex] [tex]:)[/tex]

please help!
elect the correct answer.
Which statement is true?

A.
The function is an odd function because its graph is symmetric about the y-axis.
B.
The function is an even function because .
C.
The function is an odd function because .
D.
The function is an even function because its graph is symmetric about the origin.

Answers

The true statement is The function f(x)= tan(x) is an odd function because f(-x) = -f(x).

What is odd function?

When x is substituted with -x, the odd functions are those that return their negative inverse. When f(-x) = -f(x), it follows that f(x) is an odd function (x). The trigonometric sine function, tangent function, cosecant function, etc. are a few examples of odd functions.

If f(x) = f(x), then the function is odd for all x. An odd function's graph will be symmetrical in all directions around the origin. Consider how unusual f(x) = x³ is. In other words, the function on one side of the x-axis is graphically symmetric about the origin or sign inverted with respect to the other side.

As, we know for the

even function: f(-x) = f(x)

odd function: f(-x)= -f(x)

and, using Trigonometry

tan x = sin x / cos x

Then,

f(-x) = sin (-x) / cos (-x)

      = -sin (x) / cos (x)

      = -tan (x)

      = -f(x)

Thus, tan (x) is an odd function.

Hence, the function f(x)= tan(x) is an odd function because f(-x) = -f(x).

Learn more about odd function here:

https://brainly.com/question/20049729

#SPJ1

Elise, Jake, Malik, and Xiao each solved the same inequality.

Answers

Random Reply:

Indeed, so they have.

please help! a point is chosen at random in the square, what percent of the time will the point be in the circle,round to the nearest tenth of a percent?

Answers

Answer:

78.5%

Step-by-step explanation:

You take the area of the circle which is pie*r^2

and divide it by the area of the square

The answer to your question will be 20%

A rental car company charges $72.37 per day to rent a car and $0.06 for every mile
driven. Colton wants to rent a car, knowing that:
• He plans to drive 275 miles.
• He has at most $450 to spend.

Answers

Answer:

5.99 days.

Step-by-step explanation:

If you are asking how many days he can rent the car then this is the correct answer.

So first multiply 275 x .06 to get how much money he will spent on the mileage. Which is $16.50. Then subtract that from $450 which is $433.50 and divided by $72.37.

Use formula A=LW to find the length of a rectangle when the width is 35 ft and the area is 1,750 sq ft

Answers

Answer:

the length of the rectangle is 50 ft

Step-by-step explanation:

A-LW

1,750=L(35)

divide both sides by 35

L= 50

If the following line segment is reflected across the y-axis, what are the coordinates of the new endpoints?

A. (1, 6) and (3, 2)

B. (-1, -6) and (-3, -2)

C. (6, -1) and (2, -3)

D. (-6, 1) and (-2, 3)

Answers

Answer:A

Step-by-step explanation: im right im a god at answering these kind of equations.

one ounce of gold can be purchased for $1,195.80.one ounce of silver can be purshased for $16.08.what is the difference between the cost of 5 ounces of gold and 5 ounces of silver?

Answers

Answer:

Step-by-step explanation:

Remark

This is a proportion question a proportion is 2 equal ratios equated to each othe. If three parts are known the 4 can be found.

Givens

1 oz silver costs 16.08

1 oz  Gold costs 1195.80

Silver

16.08/1 = x / 5                Multiply both sides by 5

5*16.08 = 1*x            

80.4       =x

Gold

1195.80/1 = x/5

5 * 1195 = 1 * x

5979  = x

Answer

Difference = Cost of Gold - Cost of Silver

Difference = 5979 - 80.4

Answer Difference = 5898.60

Find the area of the shape based on the provided measurements

Answers

Answer:

375 units²

Step-by-step explanation:

A = bh/2

A = (75)(10)/2

A = 750/2

A = 375

A box contains 3 orange pencils, 9 yellow pencils, and 5 green pencils.

Two pencils are selected, one at a time, with replacement.

Find the probability that the first pencil is green and the second pencil is yellow.

Express your answer as a decimal, rounded to the nearest hundredth.

Answers

The probability that the first pencil is green and the second pencil is yellow is 0.16.

What is the probability?

Probability determines the odds that an event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The probability that the first pencil is green and the second pencil is yellow = (number of green pencils / total number of pencils) x (number of yellow pencils / total number of pencils)

5/17 x 9/17 = 0.16

To learn more about probability, please check: https://brainly.com/question/13234031

#SPJ1

Write in index form 12 × 12 × 12 × 12 × 12 × 12 × 12 × 12

Answers

Answer:

[tex]\sf{12^{8} }[/tex]

Step-by-step explanation:

12 × 12 × 12 × 12 × 12 × 12 × 12 × 12 = [tex]\sf{12^{8} }[/tex]

[tex]\sf{12^{8} }[/tex] = 429,981,696

An easy way to think of this is that there are 12 is being multiplied by itselg 8 times (there are 8 12s). Similar to how squared numbers work...

Hope this helps! If you need further explanation, let me know!

- profparis

Answer:

12⁸

Step-by-step explanation:

Index forms are used to show how many times a number or variable has been multiplied by itself. 

Here, 12 is being multiplied by itself eight (8) times.

The index form would be:

12⁸

Hope this helps!

A radio station has a broadcast area in the shape of a circle with equation x2+ y2=5,625, where the constant represents square miles.
A.
B.
C.
Highlight answers + work shown pls
I'll give brainliest

Answers

The answer is : 5625 pi square miles
Or
If decimal : 17,671.46 square mile

Any doubts

Explaining in pic

Pls help with this ;w;

Answers

Answer:

79-83= 2

84-88 =4

89-93= 5

94-98=2

Step-by-step explanation:

put in order then you can just count them

Leo drew a line that is perpendicular to the line shown on the grid and passes through point (F, G). Which of the following is the equation of Leo's line?

A) y - F = -2(x - G)y
B) y + F = 2(x + G)
C) y - G = -1/2(x - F)
D) y - G = -1/2(x + F)

Answers

The equation of the perpendicular line drawn by Leo is [tex]y-G=\dfrac{-1}{2}(x-F)[/tex]. Option C is the correct answer.

The equation of the line is [tex]y-y_1=m(x-x_1)[/tex] where, [tex]m[/tex] is the slope of the line and [tex](x_1,y_1)[/tex] is the point through which it is passing.

How to determine the equation of a line?

A line is drawn perpendicular to the line shown in the image. The perpendicular line passes through the coordinate point [tex](F,G)[/tex].

The slope of the line from the graph is-

[tex]m=\dfrac{y-intercept}{x-intercept}\\=2[/tex]

Therefore, the slope of the perpendicular line is [tex]\dfrac{-1}{2}[/tex].

Also, it is being given that Leo's line is passing through the coordinate point [tex](F,G)[/tex].

So, the equation of the Leo's line is-

[tex]y-G=\dfrac{-1}{2}(x-F)[/tex]

Thus, the equation of the perpendicular line drawn by Leo is [tex]y-G=\dfrac{-1}{2}(x-F)[/tex].

Learn more about the equation of line here- https://brainly.com/question/20632687

#SPJ2

The maximum grain yield for corn is achieved by planting at a density of 37,000 plants per
acre. A farmer wants to maximize the yield for the field represented on the coordinate grid.
Each unit on the coordinate grid represents one foot. How many corn plants, to the nearest
thousand, does the farmer need? (Hint: 1 acre = 43,560 ft?)
у
5001
E
F
F
х
lo
-500
500
G
-500
H
The farmer needs approximately
corn plants.

Answers

Since there are 37000 plants per hectare, the total corn plan required is 475,665.75 corn plants

How to determine the area of a trapezium?

The trapezium is a 2 -dimensional shape consisting of a triangle and a square.

The formula for calculating the area of a trapezoid is expressed as:

Area = 0.5(a + b)h
Area = 0.5(500 + 900) * 800
Area = 700 * 800
Area = 560000 square feet

Since 1 acre is equivalent to 43560 square feet, hence the total acre required is expressed as:

Required acre = 560000/43560
Required acre = 12.856 acres

Also since there are 37000 plants per hectare, the total corn plan required is 475,665.75 corn plants

Learn more on area of trapezoid here: https://brainly.com/question/1463152

OLZ HELP ILL MARK AS BRAINLEST
find the slope​

Answers

Answer:

-1

Step-by-step explanation:

Mike paid $492.60 for 4 new tires for his truck. If each tire cost the same, What was the cost for 1 tire?

Can someone help me with it, plase? :(​

Answers

Answer:

123.15

Step-by-step explanation:

Here are the chorus datz: {0, 10, 10, 20, 20, 20, 20,30, 30, 40) What is the mean?

Answers

Answer:

7 is 20

8 is 40

Step-by-step explanation:

Mean is the total of all the numbers divided by the amount of numbers

7. 20

8. 40

Add them all up divide by the total amount of them

Which of the following describes the polynomial function?
8
==
4
-2
2
09
00
8
X
1
-5
do
9
The function has a negative leading coefficient.
O The function has an even degree.
O The function has zero turning points.
The function has one x-intercept.

Answers

Answer:

the function has one x intercept is the correct answer of given statement

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Answers

Answer:

Step-by-step explanation:

Please help!! What do I do

Answers

Answer:

a(5) = 1.080

a(10) =  0.393

a(20) =  0.122

Step-by-step explanation:

Take the derivative of velocity v(t) -> acceleration a(t)

v(t) -> a(t)

Quotient Rule: [tex]\frac{u*dv-du*v}{u^2}[/tex]

[tex]120*\frac{x}{5x+13}[/tex]

Make u= 5x+13 and v=x

[tex]120*\frac{x'*(5x+13)-x*(5x+13)'}{(5x+13)^2}\\\\120*\frac{1*(5x+13)-x*(5)}{(5x+13)^2}\\\\120*\frac{(5x+13)-5x}{(5x+13)^2}\\120*\frac{13}{(5x+13)^2} \\\\a(t)=\frac{1560}{(5x+13)^2}[/tex]

Now Subsitute your a(5) , a(10) , a(20). Also, round to 3 decimal place.

a(5) = 1.08033241 = 1.080

a(10) = 0.3930461073 = 0.393

a(20) = 0.122170826 = 0.122

Answer:

  (a) 1.080 ft/s²

  (b) 0.393 ft/s²

  (c) 0.122 ft/s²

Step-by-step explanation:

Acceleration is the derivative of velocity. You are being asked to differentiate the given function and evalutate the derivative at three different times. The function is a rational function, so the formula for the derivative of a ratio is applicable.

  (u/v)' = (vu' -uv')/v²

__

For the given velocity function, the accleration is ...

  v(t) = (120t)/(5t +13)

  a(t) = v'(t) = ((5t +13)(120) -(120t)(5))/(5t +13)² = 1560/(5t +13)²

(a)

At t=5, the acceleration is ...

  a(5) = 1560/(5·5 +13)² = 1560/1444 ≈ 1.080 . . . ft/s²

(b)

At t=10, the acceleration is ...

  a(10) = 1560/(5·10 +13)² = 1560/3969 ≈ 0.393 . . . ft/s²

(c)

At t=20, the acceleration is ...

  a(20) = 1560/(5·20 +13)² = 1560/12729 ≈ 0.122 . . . ft/s²

_____

Additional comment

Many graphing calculators are capable of finding the numerical value of the derivative of a function.

Function or not a function pls help giving brainlest

Answers

Answer:

function

Step-by-step explanation:

For every value of 'x' ....there is only ONE value of 'y'

  so it IS a function

Ashley makes 9 dollars for each hour of work. Write an equation to represent her total pay p after working h hours

Answers

Answer:

twin what does H mean?

Step-by-step explanation: if you mean 8 the answer is 72.

which angle is conterminal with a 645 degree angle

a. an angle measuring 75 degrees
b. an angle measuring 265 degrees
c. an angle measuring 345 degrees
d. an angle measuring 285 degrees

Answers

Answer:

D. An angle measuring 285 degrees

Step-by-step explanation:

An angle that is coterminal is congruent to the other angle whether negative or positive or more than 360.

An angle that is 645 degrees can be broken down into 360 + 285.

Since 360 is one revolution the angle would finish with 285 degrees.

Therefore the coterminal angle to 645 is 285.

Other Questions
What does Tom do at the party to keep himself busy? Find the value of each variable.HELP Whats the answer?????#7 how do you get the reader's attention when you first start your essay? A. use all capital letters B. write big words C. use proper English D. use an interesting hook _____ assigned Bartholomew to the Interregional Highways Committee, starting events that would lead to the Federal-Aid Highway Act of 1944. Group of answer choices Franklin D. Roosevelt Daniel Burnham Robert Moses Herbert Hoover A bag contains 8 red crayons 14 purple crayons 6 yellow crayons and 4 green crayons. A crayon is selected, then another is selected. Find each probability. P(green then red) An architect drew the blueprint for a new office building. He used a scale in which 1 inch represents 7.5 feet. The floor of an office in the building will have actual dimensions of 14 feet by 24 feet. What will the dimensions on the blueprint be? A. 105 inches by 180 inches B. 21.5 inches by 31.5 inches C. 6.5 inches by 16.5 inches D. 1.87 inches by 3.2 inches Which details are important to consider when analyzing nuance in a text? select two options. number of characters connotation tone motifs length of the passage Solve for x in the equation x squared minus 8 x 41 = 0. Ukraine, historically, was on which side of the Iron Curtain?a. Northb. Southc. Eastd. West District courts resolve ___________ by determining the facts and applying legal principles to decide who is right. They are trial courts. Direct ethanol fuel cells (DEFCs) have shown some promise as a viable option for providing "green" energy to small electrical devices. Calculate E for the reaction that takes place in DEFCs:C2H5OH(l) + 3O2(g) 2CO2(g) + 3H2O(l)Use the following values.GH2O(l) = -237 kJ/molGO2(g) = 0 kJ/molGCO2(g) = -394 kJ/molGC2H5OH(l) = -175 kJ/mol.Eo = ? V You walk into Mr. Rosa's after his lunch tray was delivered. You observe him clutching his throat and having difficulty talking. What action should you take Part AWhat can be inferred about noise pollution in the ocean from "Ocean Noise"?A.Increased ocean noise is the main cause of the increase in endangered sea life. B.Taking steps to reduce ocean noise can benefit conservation efforts.C.The fishing industry has suffered due to the increase in ocean noise.D,The cruise ship industry is more concerned with making profits than reducing ocean noise.Part BWhich evidence from the text best supports the answer to Part A?A."Some fishing companies use special equipment that makes a 'pinging' sound to keep certain kinds of ocean life from getting caught in its fishing nets."B."The National Park Service complete a study that tracked tour cruise ships and made an effort to reduce the number of tours. They also tried to increase the 'quiet time' for humpback whales by scheduling tours farther apart."C."Since 2003, the use of low-frequency active (LFA) sonar equipment by the United States Navy has been tightly limited because its effects have shown to cause harm to many ocean animals."."Sound also plays an important role in the daily life of various ocean animals, many of which depend upon their sharp sound detection skills to survive." (6-8 ). . . FIRST ONE TO ANSWER CORRECTLY WILL BE BRAINLIEST Jamie and Billy each think of a polynomial. Each of their polynomials is monic, has degree 3, and has the same positive constant term and the same coefficient of x. The product of their polynomials is x^6 +2x^5 +2x^4 +18x^3 + 33x^2+40x+16. b)What is the coefficient of x of jamie's polynomial?c)what are the two polynomials? 12) What geographic coordinates do you use to determine absolute location?A) Left and RightB) North and SouthC) Latitude and LongitudeD) Equator and Prime Meridian. HELP What is the approximate area of the shaded region created by segment BC? As a result of globalization, U.S. political culture has both influenced and been influenced by the values of other countries. True or False A person who works as a sales representative for a manufacturer or wholesaler and gets paid a commission on any sales is classified a(n):