Radium-221 has a half-life of s. How long will it take for of a sample to decay?

Answers

Answer 1

Answer:

The answer is 82.109 sec.

Step-by-step explanation:


Related Questions

(REAL ANSWERS PLEASE)


х
у
4
-2
2
-1
0
o
-2
1
-4
2
Without graphing, what is the y-intercept of this function?
es )
A)
(0,0)
B)
(-2, 1)
(2, -1)
D
(4, -2)

Answers

Answer:

4 better explanation

Step-by-step explanation:

Answer:

C)

Step-by-step explanation:

(2,-1)

Mr. Reyes baked 4 batches of muffins for his class each batch had 12 muffins. if Mr. Reyes Has 24 students, How many muffins will each student receive?

Answers

Answer:2 muffins

Step-by-step explanation: First you have to see how many muffins he baked. 12x4 = 48 thus giving us the amount of muffins he baked. 48 muffins. If each student gets the same amount of muffins 48/24 = 2.

So each person would get 2 muffins.

Hope this helps :)

There are 900 3-digit integers, the integers between 100 and 999, inclusive. What percent of these integers contain only odd digits

Answers

Each digit can be one of {1, 3, 5, 7, 9}, so there are 5 choices for each. Then there are 5•5•5 = 5³ = 125 integers containing only odd digits, which means they make of 125/900 ≈ 14% of them.

6,600,000,000 exponential notation

Answers

Answer:

6.6 x 10^9

Step-by-step explanation:

1. Draw a quadrilateral with 2 parallel sides. It should have 2 pairs of perpendicular lines. ​

Answers

Answer:

draw a rectangle

Step-by-step explanation:

a rectangle has 2 long sides and 2 short ones it has 2 sets of simailer and has 2 perpundicular

If the Owen family has a child in two years, how much can they expect to spend, per year, to raise the child from its birth to when it is five years old?

Answers

Answer: A. 65,250+139,560= 204,810. 204,810/18=11,378

I hope it is right

Answer:

The answer would be 13,050

Step-by-step explanation:

In order to get the answer, you have to do 65,250 divided by 5 years and you should get 13,050 on your calculator.

Select all the statements that are true for △ABC.A. AH is an altitude.
B. IH is a median.
C. JC is a median.
D. The medians and altitudes intersect at the same point.
E. The altitudes intersect outside of the triangle.

Answers

The relationships between the two medians and an altitude marked on

ΔABC can be used to determine the true statements.

The true statements are;

A. AH is an altitudeC. JC is a median

Reasons:

A median line is a line that extends from the vertex to the midpoint of the

opposite side, bisecting the opposite side.

In the figure, we have;

The median of ΔABC are; JC, and BI

The point of intersection is the point K

The altitude is a perpendicular line from a vertex to the opposite side

known as the base of the triangle.

The given altitude of ΔABC is; AH

Therefore, the statements that are true are;

A. AH is an altitude

C. JC is a median

Learn more about the median line and altitude of a triangle here:

https://brainly.com/question/2141396

https://brainly.com/question/4420798

(a) A box contains 7 red balls, 6 white balls, and 7 black balls. Two balls are drawn at random from the box (with replacement of the first before the second is drawn). What is the probability of getting a red ball on the first draw and a white ball on the second

Answers

Answer:

Step-by-step explanation:

20=total marbles

  7/20 × 6/20=  21/400   or 5.25%

   red     white

please help, im literally so tired

Answers

Answer:

sameee lol

Step-by-step explanation:

Match to the other shape​

Answers

Answer:

wheres the picture?

Step-by-step explanation:

54,392 rounded to the hundreds place

Answers

Answer:

54,400

Step-by-step explanation:

Simplify the ratio 25 :15

Answers

Answer:

5/3

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 25 and 15 is 5

Divide both the numerator and denominator by the GCD

25 ÷ 5

15 ÷ 5

Reduced fraction:  

5

3

Therefore, 25/15 simplified to lowest terms is 5/3.

brailiest pls hope it helps

33% of what number is 1.45? Round to the nearest tenth.

Answers

Take the unknown number as 'y'.

=》33% = 33/100

=》1.45 = 145/100

33/100 × y = 1.45

33/100 × y = 145/100

33y = 145/100 × 100/1

33y = 145

y = 145/33

y = 4.39

______

RainbowSalt2222 ☔

4,39

I'm sorry if I'm wrong

The sum of 13 and 3 times a number is 31. What is the number?

Answers

Answer:

6

Step-by-step explanation:

yeah-ya ............... right?

Answer: 6

Step-by-step explanation:

13 + 3 × n = 31

n represents unknown number

13 + 3n = 31

-13           -13

3n = 18

/3      /3

n=6

Can someone answer these questions? Thank you!

Answers

Answer:

It's not a function

Because it's not a function, you don't have to answer b and c

A) y = 5x

B) y = 10x

C) y = 7.5x

D) y = 30x​

Answers

Y=30x is the answer to this

1, 7, 13, 19, 25
Find the 20th linear term

Answers

Answer:

I think that the answer to your question is 115

The price was reduced from two thousand, four hundred ninety-eight dollars to one thousand, nine hundred ninety- nine dollars. By how much was the price reduced?​

Answers

Answer:

$499

Step-by-step explanation:

Since the price was reduced from an amount which is $2,498. You have to take that amount and the other amount which is $1999 and subtract them both.

2489-1999=499

(When you get your answer,make sure to add the dollar sign.)

The price was reduced by $499.

A type of bacterium triples in population every hour. Assuming you start with
80 bacteria, the formula that models the number of bacteria at the beginning
of hour nis:
a(n) = 80 • 31-1
How many bacteria will there be at the beginning of hour 5?
A. 19,440
B. 1200
C. 720
D. 6480

Answers

Answer:

Here

Step-by-step explanation:

It is B Because if you do (8 times 3)5 it equals 1200

HELPPPPPPPPPPPPPPPPPPP

Answers

Answer:

student a because the line has a negative slope not a positive slope

Step-by-step explanation:

ILL GIVE BRAINLIEST! THIS IS DUE SOON PLEASE

Answers

Answer:

-3

Step-by-step explanation:

a. Simply put (x+h) wherever you have x.

[tex]f(x+h) = -3(x+h)+7 = -3x +7 -3h[/tex]

b. We have the first part, just subtract

[tex]f(x+h) = -3(x+h)+7 = -3x +7 -3h - (-3x+7) = -3x+7-3h +3x -7 = -3h[/tex]

c. Finally, we divide by h[tex]\frac{-3h}h = -3[/tex]

15.
The number of calories in a 100-g serving of fruit varies by the type of fruit. A snack consisting of
on serving each of peach, apple, and banana contains 124 calories. A snack consisting of two
servings of peach and one serving of banana contains 160 calories. A snack consisting of one
serving of peach, 2 servings of apple, and two servings of banana contains 188 calories. How
many calories are in a 100-g serving of each type of fruit?

Answers

Answer:

A=24, B=40, P=60

Step-by-step explanation:

given:

P+A+B=124

2P+B=160

P+2A+2B=188

___________

P=188-2A-2B

P=124-A-B

188-2A-2B=124-A-B

188-A-B=124

188=124+A+B

A+B=64

___

P+A+B=124

P=60

___

2P+B=160

120+B=160

B=40

___

A+B=64

A=24

___

If we substitute each variable in the three given equations for these values, the equations hold true. Therefore, these are the correct values.

8 glasses every 24 hours

Answers

Answer:

f(x)= 8x

Step-by-step explanation:

x represents the number of days. 8 represents the number of glasses per day.

1 glass every 3 hours is the unit time

Find the square root of the following: 36
121​

Answers

Square root of 36 is 6 and for 121 its 11
36 square root of it is 6
121 square root of it is 11

Subtract from (4x- 5y+3z) from the sum of (9x+2y-3z), (-10x+ y- z) and (2x+ 3y+ 7z).
Explain​

Answers

Step-by-step explanation:

★First let's find out the sum.

(9x + 2y - 3z) + (-10x + y - z) + (2x + 3y + 7z)

= (9x - 10x + 2x) + (2y + y + 3y) + (-3z - z + 7z)

= (x) + (6y) + (3z)

= x + 6y + 3z

Now subtraction:

(x + 6y + 3z) - (4x - 5y + 3z)

= (x + 6y + 3z - 4x + 5y - 3z)

= (x - 4x + 6y + 5y + 3z - 3z)

= -3x + 11y

★∴Answer is -3x + 11y

______________________

.
Solve using traditional division: 3,385 31.
109 R6
1009
108 R 37
109

Answers

Answer:

109r6

Step-by-step explanationi got it

8488.75 times 24.50 plz quick

Answers

Answer:

207,974.375

I'm not sure if you need an explanation, and I myself, am not sure I can explain it to you, so I'll just give the answer to you.

Hope this helps!

Plx = 3 + 5x+2
Degree
Leading coefficient
Turning Points
End
Behavior of the
Graph

Answers

Answer:

cost of renting from company A

C = 15 + 2.30x

cost of renting from company B

C = 22 + 1.90x

equate both the equations

15 + 2.30x = 22 + 1.90x

2.30x - 1.90x = 22-15

0.4x = 7

x = 7/0.4 = 17.5

At 17.5 miles, cost will be equal.

Answer: 17.5 miles

Donny jumped from a rock into a lake. The rock is 35 feet above water. He dove 15 feet below the surface of the water. His brother says he traveled 20 feet in all. Donny says he traveled 50 feet in all. Who correct?

Answers

Donny is correct. To solve this problem all you need to do is add 35 to 15 equation below ⬇️

· Carlos ran one lap in 1 minute 3 seconds. Orlando rana one lap 5 seconds faster than Carlos. How many seconds did it take Orlando to run one lap?​

Answers

Answer:

58 seconds.

Step-by-step explanation:

Since one minute equals 60 seconds, Carlos took 63 seconds.

Orlando ran in 63 seconds - 5 seconds, which is equal to 58 seconds.

Other Questions
Can you think of an equivalent of sharia law in another religion or societal group? We will have walked for 2 hours by the time we get back to camp what is the net force on a car moving in a straight line with a constant velocity Select the word that functions as a conjunction in the sentence.unless something changes, the parade will be at 10 a.m. sharp Nine more than the quotient of two and a number xxx. PLEASE HELP ME FAST * NO LINKS, NO DOWNLOADS, WILL REPORT* Read the excerpt from "A Quilt of a Country."Once these disparate parts were held together by a common enemy, by the fault lines of world wars and the electrified fence of communism. With the end of the cold war, there was the creeping concern that without a focus for hatred and distrust, a sense of national identity would evaporate, that the left side of the hyphenAfrican-American, Mexican-American, Irish-Americanwould overwhelm the right.What is the denotative meaning of fault lines in this excerpt?1. lines that are drawn when placing blame2. areas of defense in times of war3. long cracks in the surface of the earth4. breaks in modern American society Any distinct society whether complex and or an advanced stage in human development can best be described as a / an: The store owner purchased 26 shirts for $810.68. How much did each shirt cost? 2 < 3 < 5 True False Help help help help help pleases pelass thank you 20 POINTS!!!!!! ANSWER ASAP!!!!!!Energy cannot be created or destroyed; it can however be converted from one form to another. How does God use our spirituality and faithfulness the same way?HELP ME NOW!!!! The data _____ component of a database management system (DBMS) is used to create and maintain the data dictionary. ____________ results from chemicals in car exhaust reacting with the sunlight.Acid RainContaminant fogSmogGreenhouse Effect Because with building costs soaring out of sight, there is pent-up demand for a well-designed, green-built, contemporary home that's actually affordable. That means it has to be efficiently constructed, and the best way to do this is in a factory, where it can be put together on an assembly line, like an automobile. A company has developed the Glidehouse can be built that way in 19 days in a factory near Vancouver, British Columbia, then trucked to your property. Glidehouse is produced through: Does "greater than" sign and "not equal to" sign denote the same thing? 8. Why are we focusing on high levels of ozone in the troposphere in this lab while in Lab 2 (Stratospheric Ozone) we focused on low concentrations of ozone in the stratosphere? What are some physical factors we deal with for sleeping? Dr. Ken prescribed some pills, and she told the patient to rest for a week. Answer: A: simple B: compound C: complex Mike, Jake, and Aaron are buying snowboards. Mike is getting his snowboard on sale for $219.49. Jakes costs $279.97. Aarons costs $234.95. Write the names in order from who spent the least to the most.Next round each snowboard price to the nearest dollar Learning Task 2: On your answer sheet, answer the your project plan on the improvised musical instrument. 1. Are the majority of the materials of the improvised musical instrument in your project plan indigenous or be found in your home? CAased on a 2. Did you achieve the sound or the tone that you desired for your performance?