The remaining mass of radioactive iodine-131 is given by the formula M = Mo(2) 4/8 where M is the remaining mass in grams, Mo is the initial mass in grams, and t is the time in days. How many days does it take for the 726 grams to be reduced to half?

Answers

Answer 1

Answer:

the remNING MAS IS 345

Step-by-step explanation:

I DID THIS BEFORE


Related Questions

A local Target store bought 90 pizzas at Pizza Hut for its holiday party. Each guest ate 1/6 of a pizza and there was no pizza left over. How many guests did Target have for the party?

Answers

By taking a quotient, we will see that the number of guests is 540.

How to find the number of guests?

Because we know that each guest ate a fixed amount of pizza, and there was no pizza left, we know that the number of guests will be equal to the quotient between the total number of pizzas bought, and the amount of pizza that each guest ate.

This is:

[tex]N = \frac{90}{1/6}[/tex]

We can rewrite that quotient as:

[tex]N = \frac{90}{1} / \frac{1}{6} = \frac{90*6}{1*1} = 540[/tex]

So the number of guests is 540.

If you want to learn more about quotients, you can read:

https://brainly.com/question/7068223

Please help me figure these out, it would be greatly appreciated. TYSM !!

Answers

Answer:

1st one is A. 2nd is D. 3rd is A. 4th is C. and the 5th one is B

Step-by-step explanation:

what is the length of the diagonal with a length of 19ft and width of 17ft

Answers

1 because you count them in between the spaces

Simplify (b^9)^3


(I use ^ to symbolize to the power of)

Answers

D
hope it helps/ not too late

Anyone? Help me. please.

Answers

Answer:

Step-by-step explanation:

sine and cosecant : positive in Q1 and Q2

cosin and secant:   positive in Q1 and Q4

tangent and cotangent:  positive in Q1 and Q3.

Answer:

Quadrant I

Step-by-step explanation:

In the first quadrant all the 6 functions are positives.

Think instead of (x, y) any point has now the coordinate (cos α, sin α) so in quadrant I we have x, y positive therefore sin α and cos α are positive.

Tangent α is positive because is sinα/cosα = positive /positive = a positive

Cotangent α= 1/tan α = cosα / sinα = positive /positive = a positive

Secant α = 1/cos α = 1/ a positive number = a positive number

Cosecant α = 1/sin α = 1/ a positive number = a positive number

Jacob bought one bulb of elephant garlic for $3. How many bulbs can Stephanie buy if she has $21

Answers

Answer: 7 bulbs

Step-by-step explanation: 21/3

If you take 21 and divide it by 3 the answer would be 7, Stephanie would be able to buy 7 bulbs with 21 dollars.

Mrs. Burgess will go to the gym on 20 different days this month. A one day pass to the gym costs $9.65. A monthly pass to the gym costs $145. How much will Mrs. Burgess save by buying a monthly pass?

Answers

Answer:

Mrs. Burgess will save $48 by buying a monthly pass.

Step-by-step explanation:

Let's compare the one-day pass to the monthly pass by finding how much 20 one-day passes will cost.

Multiply the price for a one day pass, $9.65, to the gym by 20 days:

$9.65 * 20 = $193

Compare this price to the monthly pass price by subtracting these values.

$193 - $145 = $48

If Mrs. Burgess buys the monthly pass of $145 instead of buying 20 day passes for $193, she will save $48.

Please do number 3 or number 5

Answers

Answer:

No 3.

[tex]165 \: \times \frac{103}{100} [/tex]

No 5.

[tex]15 \: \times \frac{100 + 17}{100} [/tex]

its been a long time

do you mind mark me as the brainliest

Answer:

3. 169.95

How:

165x1.03 =  169.95

The numbers of beans in some cocoa pods are 30 28 30 35 40 25 36 38 and 40. Calculate the mean number of beans per cocoa pods

Answers

mean = sum of the terms over number of terms
= 30+28+30+35+40+25+36+38+40 /9
=33.55

How do i solve this?? ​

Answers

Answer:

$49.29 Give me brainliest please

Which statement(s) are true based on the pythagorean identities?

Answers

The Pythagorean identities are sin² θ + cos² θ = 1, 1 + tan² θ = sec² θ, and 1 + cot² θ = cosec² θ. Then the correct options are B, C, and E.

What is a right-angle triangle?

It is a type of triangle in which one angle is 90 degrees and it follows the Pythagoras theorem and we can use the trigonometry function. The Pythagoras is the sum of the square of two sides is equal to the square of the longest side.

We know that

[tex]\rm H^2 = P^2+B^2[/tex]

Divide the  equation by H², then we have

[tex]\rm\dfrac{P^2}{H^2}+\dfrac{B^2}{H^2} = 1 \\\\\sin ^2 \theta + \cos ^2 \theta = 1[/tex]

Similarly, the equation is divided by P² and B², then we have

[tex]\rm 1 + \tan ^2 \theta = \sec ^2 \theta \\\\1 + \cot ^2 \theta = cosec ^2 \theta[/tex]

More about the right-angle triangle link is given below.

https://brainly.com/question/3770177

Write an equation in point-slope form for the graph shown below?

Answers

Answer:

y-4=-2/5(x+5)

Step-by-step explanation:

Points slip form is y-y₁=m(x-x₁)

Since you have a graph we can see the line goes down 2 and over 5. Since the slope is going downwards it is a negative slope. This mean m=-2/5. Then pick any point on the line ( I chose (-5,4)) and plug it in for y₁ and x₁.

you and your friend are selling tickets for the orchestra concert, On Thursday, you sold 15 tickets and your friend sold 10 tickets.

A. What percent of the tickets sold on Thursday did you sell?
B. On Friday, you sold 9 tickets and your friend sold 16 tickets. What percent of the tickets sold on Friday did you sell?
C. What percent of the total tickets sold on Thursday and Friday did you sell?

Answers

Answer:

....

Step-by-step explanation:

The total tickets sold is 10+15=25.

The percentage of tickets told by me will me 15/25=3/5 or 60%.

Similarly for the second one: total sold 9+16=25

my proportion 9/25=36%

If you start with the equation x-6, what equation do you have when you add 3 to both sides

Answers

Same. If you change both side with same value, it keeps the equality.

If 9x+4y=−3 is a true equation, what would be the value of 6(9x+4y)?

Answers

Answer:

-18

Step-by-step explanation:

9x + 4y = -3 (Given)

Multiply both sides of the equation by 6, we find:

6(9x + 4y) = 6(-3)

-> 6(9x + 4y) = -18

Answer:

-18

Step-by-step explanation:

Given

9x + 4y = -3

We need to evaluate 6(9x + 4y).

Substitute the value of 9x + 4y in the expression.

6(9x + 4y)6(-3)-18

Sabina wants to decorate her square table with ribbon around the edge. If the length of one side of the table is 2 meters, how much ribbon does she need?

Answers

Answer:

8 meters of ribbon

Step-by-step explanation:

because a square has four sides so if you do 2×4 =8

Students in a class were surveyed about the number of children in their families. the results of the survey are shown in the table. a 2-column table has 5 rows. the first column is labeled number of children in family with entries 1, 2, 3, 4, 5 or more. the second column is labeled number of surveys with entries 9, 18, 22, 8, 3. two surveys are chosen at random from the group of surveys. after the first survey is chosen, it is returned to the stack and can be chosen a second time. what is the probability that the first survey chosen indicates four children in the family and the second survey indicates one child in the family? startfraction 1 over 50 endfraction startfraction 2 over 15 endfraction startfraction 3 over 20 endfraction startfraction 17 over 60 endfraction

Answers

The probability that the first survey chosen indicates four children in the family, and the second survey indicates one child in the family is 1/5.

What is probability?

The surveys are chosen with replacement (the first one is replaced before the second is chosen), and the events are independent.  

This means that the probability of both together is the product of each event's probability.

The probability of choosing a survey that indicates 4 children in the family is 8/60 since there are 8 surveys with 4 children out of a total of (9+18+22+8+3) = 60 surveys.

The probability of choosing a survey that indicates 1 child is 9/60 since there are 9 surveys with 1 child out of a total of 60.

Together this gives us;

[tex]= \dfrac{8}{60} \times \dfrac{9}{60}\\\\ =\dfrac{ 72}{360} \\\\ =\dfrac{1}{5}[/tex]

Hence, the probability that the first survey chosen indicates four children in the family, and the second survey indicates one child in the family is 1/5.

To know more about probability click the link given below.

https://brainly.com/question/13379260

Answer:

1/50

Step-by-step explanation:

If andrew has 10 fish, and 4 of them drown, 3 swim away, and 1 dies of unknown reasons, how many fish does he have left?

Answers

Answer: Non

Step-by-step explanation:

If Andrew has 10 fish 4 dies he ends up with six. If 3 swim away he will have 1. If 1 does he would end up with non left.

Answer:5

Step-by-step explanation:

10 fish, 4 drown, so now 6 left,one dies, 5 left, and 3 swim away yet they are still his. They can't swim away in a fish tank.

hope it helped :D

James is framing a rectangular print for art class and needs to know the perimeter. The length of the print is 24 inches and the width is 18 inches. What is the perimeter in inches of the print?

Answers

Answer:

84

Step-by-step explanation:

Given,

Length of the print(l) = 24 inches

Width of the print(b) = 18 inches

Perimeter of the print(P)= ?

We know,

Perimeter of the print(P) = 2(l + b)

= 2(24 + 18)

= 2(42)

=84 inches^2

PLS HELP ME I WILL MARK THE BRAINLIEST

Answers

Given that the solids are similar, we have:

1. 5/3

2. 4/25

3. 512/13,824

What is the Volume and Surface Area of Similar Solids?

If two solids have a surface area of A and B respectively, and a and b are their respective corresponding linear measures, the following ratio would be true for the similar solids:

Surface area for A/Surface area for B = a²/b².

Volume for A/Volume for B = a³/b³.

1. If the two pyramids are similar, therefore:

Ratio of the height of larger to the smaller pyramid = √(525/189) = √(25/9)

Ratio of the height of larger to the smaller pyramid = 5/3

2. Ratio of the linear measure of the smaller prism to the larger prism = ∛(24/375)

=  ∛(8/125) = 2/5

Ratio of their surface area = 2²/5²

Ratio of their surface area = 4/25.

3. Ratio of the volume of the smaller cyinder to that of the larger = 8³/24³

= 512/13,824

Learn more about similar solids on:

https://brainly.com/question/16599646

A rectangular prism has a height of 15 centimeters and a width of 6 centimeters. The surface area of the prism is 684 square centimeters. What is the length of the prism?

A. 24 cm

B. 12 cm

C. 9 cm

D. 6 cm

Answers

Answer:

Step-by-step explanation:

Let the length be L

Formula

SA = 2Lw + 2Lh + 2wh

Givens

h = 15 cm

w = 6 cm

L = ?

SA = 684 cm^2

Solution

Substitue what you know into the given formula

2*6*L + 2*15*L + 2 * 6 * 15 = 684         Combine

12*L + 30*L + 180 = 684                         Combine again

42L + 180 = 684                                     Subtract 180 from both sides.

42L +180 -180 = 684 - 180            

42L = 504                                               Divide by 42

Answer: L = 12

50 x 1 decimal value
And then what’s 50 x 0 decimal value
Do the resulting product

Answers

Answer:

If I understood what you mean properly... 0

Step-by-step explanation:

50 x 1 = 5050 x 0 = 0Resulting product:50 x 0 = 0

 GIVING BRAINLIEST TO THE PERSON THAT CAN EXPLAIN THIS THE BEST (:

Answers

Answer:

14w

Step-by-step explanation:

Width = w

Length is 6 time its width. so, multiply w by 6

length = 6*w = 6w

Perimeter of rectangle = 2* (length + width)

                                        = 2*(6w + w)

                                        = 2*7w

                                         = 14w

A paper cup shaped like a cone has a diameter of 6 centimeters and a slant height of 7.5 centimeters. About how much paper is needed to make the cup

Answers

Answer:

22.5 cm^2

Step-by-step explanation:

Amount of paper is going to be measured in area, so we want the surface area of the cone.  Since it is a cub it doesn't have a base, so we don't need to count it.  

Area of the cone without the base, or what is called the lateral area is pi*r*s where r is the radius and s is the slant height.  and of course radius is d/2 where d is the diameter.  so let's plug it in.  We know diameter is 6 and slant height is 7.5

SA = pi * r * s

SA = pi * d/2 * s

SA = pi * 6/2 * 7.5

SA = 22.5 cm^2

So you will need 22.5 square centimeters of paper.

What is the value of the expression below when y=4?
3y2 + y +8

Answers

Answer:

Step-by-step explanation:

           =3(4)^2 + 4 + 8

           =3(16) + 4 + 8

            = 38 + 12

            = 60

           

3(4)e2 +(4) + 8

3(16) + 4 + 8

3 x 16 = 48

4 + 8 = 12

48 + 12 = 60

Pls help nothings helping !!

Answers

Answer:

Step-by-step explanation:

∠BCD=∠DEF=38°(alternate angles)

∠FDE=90-38=52°

Δ BCD≅ΔFED

[tex]\frac{CD}{sin~90} =\frac{10}{sin~38} \\CD=\frac{10}{sin~38} \\\frac{DE}{sin ~90} =\frac{17}{sin ~52} \\DE=\frac{17}{sin~52} \\CE=CD+DE=\frac{10}{sin~38} +\frac{17}{sin~52} \\=?[/tex]

-3 and -1/2 form quadratic polynomial​

Answers

Answer:

2x² + 7x + 3 = 0

Step-by-step explanation:

[tex]\sf \text{Sum = -3 + $(\dfrac{-1}{2})$}[/tex]

                    [tex]\sf = \dfrac{-3*2}{1*2}-\dfrac{1}{2}\\\\=\dfrac{-6}{2}-\dfrac{-1}{2}\\\\=\dfrac{-7}{2}[/tex]

[tex]\sf \text{Product =$-3*\dfrac{-1}{2}$}[/tex]

                         [tex]= \dfrac{3}{2}[/tex]

Quadratic polynomial:

[tex]\boxed{x^{2}-sum *x+product = 0}[/tex]

[tex]x^{2}- \left(\dfrac{-7}{2}\right)x+\dfrac{3}{2}=0\\\\x^{2} + \left(\dfrac{7}{2}\right)x+\dfrac{3}{2}=0\\[/tex]

Multiply the entire equation by 2

[tex]2*x^{2} + 2*\dfrac{7}{2}x +2*\dfrac{3}{2}=0[/tex]

2x² + 7x + 3 = 0

As smart phones have grown in popularity, regular cell phones have fallen out of favor. As a result, one electronics retailer estimates that 10.5% fewer regular cell phones will be sold every year. If the retailer sells 847,901 regular cell phones this year, how many will be sold 5 years from now?

Answers

Answer:

4,239,505

Step-by-step explanation:

847,901 x 5 = 4,239,505

What two factors have a sum of 23

Answers

Answer:

2 factors

Step-by-step explanation:

BRAINLIEST TO CORRECT ANSWER!!!!

A circular garden has a diameter of 12 yards. What is the area of the garden?

Use 3.14 for pi.

O A. 452.16 yd

O B. 56.52 yd

O C. 113.04 yd

O D. 37.68 yd​

Answers

Answer:

As Per Provided Information

Diameter of Garden 12 yards

Radius of Garden will be 12/2

Radius of Garden will be 6 cm

We have been asked to find the area of the circular garden .

Formula Used here

[tex] \underline{\boxed {\bf \: Area_{(Garden)} \: = \pi {r}^{2}}} [/tex]

Just put the value and let's calculate the area of circular garden .

[tex] \qquad \longrightarrow\sf \: Area_{(Garden)} \: = 3.14 \times {6}^{2} \\ \\ \\ \qquad \longrightarrow\sf \: Area_{(Garden)} \: = 3.14 \times 36 \\ \\ \\ \qquad \longrightarrow\sf \: Area_{(Garden)} \: = 113.04 \: {yard}^{2} [/tex]

Therefore,

Area of circular garden is 113.04 yard².

Step-by-step explanation:

Given :-

Diameter of garden is 12 yard , so radius will be 6 yards

We have to find the area of garden

Area of Circle = πr²

Putting the known values ,

Area = 3.14 × 6² yd²

Area = 113.04 yd²

Other Questions
Write an expression to represent the area of each figure How much did American trade go up between 1914 and 1917? PLS HELP WILL GIVE BRAINLIEST The frequency of a wave increases. if the speed of the wave remains constant, what happens to the distance between successive crests? Find the volume of a prism Choose one answer for each statement, whether it is True or False:a) CPU stands for Computer Processing Unitb) The CPU processes all of the data and instructions that make a computer system workc) The CPU carries out the fetch-decode-execute cycled) The clock speed, number of processor cores and cache size all affect CPU performance v DetailsWRITING TASKThere is currently a debate about people owning exotic animals as pets.Think about BOTH sides of the debate. Should people have the right to own exoticanimals? Write an argumentative essay in your own words supporting either sideof the debate.Be sure to use information from BOTH passages in your argumentative essay. Which of these is a compound sentence?Conductors guided slaves along the Underground Railroadusually from the Ohio River to the border with Canada. Conductors guided slaves along the routes created between the safe houses that hid the fugitives. Conductors guided slaves along the Underground Railroad, and safe houses provided a place for them to hide from the people looking for them. A beaver Burroughs 10 hole every five minutes how many holes will it burrow it time is increased to 25 minutes In the first week of Georgia's job, she earned $125.25 for working 15 hours. During her second week, she earned $167.00 for working20 hours. How much does she earn in dollars for each hour she works? what is mass ? give two examples Which application is a web-based storyboarding tool? a. axure b. microsoft powerpoint c. openoffice writer d. shotbox People may use depressants to relax or calm anxiety. Which of thefollowing is NOT a depressant? day trading, and how is it different from the more traditional approach to investing?7. How much profit (if any) wld Clay Sorensen make if he short-sold 300 shares of a stock at $100 ashare and the price of the stock suddenly tumbled to $70?File UploadText EntryStudioOffice 365Copy and paste or type your submission right here. HELLP Choose a topic below then compose a three-paragraph persuasive essay. Find a formula for the nth term of the sequence that begins 14.5, 16, 17.5, 19, 20.5 . Assume that the first term corresponds to n=1.F An=14.5+1.5(n-1)G An=1.5+14.5(n-1)H An=1.5+14.5nJ An=14.5+1.5n Market failure describes a situation in which the market itself ______________________ in a way that balances social costs and benefits. Group of answer choices fails to allocate resources efficiently remains outside the transaction avoids externalities incurs the costs outside the production process Help me please I dont know what it is (b) Write a complete pseudocode for a program to calculate total monthly 3 pointsbroadband data usage. The program will stop when user enter 0.* Write (-4,3) and (-5,-2) in slope intercept form