In a lab experiment, the decay of a radioactive isotope is being observed. At the beginning of the first day of the experiment the mass of the substance was 800 grams and mass was decreasing by 13% per day. Determine the mass of the radioactive sample at the beginning of the 12th day of the experiment. Round to the nearest tenth (if necessary).

Answers

Answer 1
The answer is that the mass would be 310.7 on the 12th day

Related Questions

Remember the Great Toilet Paper Shortage of 2020? Most stores have
finally restocked. Charmin makes a pack of TP with 2^4 rolls in it. Each roll
has 2^10 individual sheets. Wegman's has a shelf with 2^6 packages on it.
How many sheets are there on that shelf? Final answer must be left in
exponential form. Show the process but not the calculations - unless you
want to but sometimes less is more

Answers

Answer:

2^16 or 65,536

Step-by-step explanation:

First, you'll find the answers to 2^6 and 2^10

2^6=64 while 2^10=1024, then you multiply 1024 by 64 which gives you 65,536.

**or, the easier way is to just add the two exponents together since you see that the bases are the same.

On a certain Friday night, the local baseball stadium earned $867.50 in revenue from ticket sales on 310 tickets. Ticket prices are $3.00 for adults and $2.50 for children. How many adults attended the game on Friday?

Answers

Answer:

185

Step-by-step explanation:

Found by solving the system of equations:

3x+2.5y = 867.5

x+y = 310

What is 7 + 6x for x = -3?

Answers

Answer:

-11

Step-by-step explanation:

Answer:

the answer is -11

Step-by-step explanation:

putting the value of x in the equation:-

7+6(-3)

7+(-18)

7-18

-11

How did you find each square root? ​

Answers

Answer:

......

Step-by-step explanation:

join on zoom meeting now I'd 4989249097 and password MsS8pt join now for fun only girls

Can someone help me on these questions for geometry sorry if the quality is bad.

Answers

Can you please take the pictures again I would love to help you! <3

Can someone please help me

Answers

Answer:

a. 8

Step-by-step explanation:

the width of a rectangular paper is 8.5 inches,and the diagnal length is 14 inches . what is the length of the piceof paper in inches

Answers

Answer:

Step-by-step explanation:

What is the interest on $450 loan at 7% for 2 year

Answers

Answer:

$63

Step-by-step explanation:

here,

principle=$450

rate=7%

time=2yrs

intrest=?

now,

as, we know,

intrest=(p×t×r)÷100%

intrest=($450×7×2%)÷100%

intrest=$6300÷100

therefore, intrest=$63#

Interest on given principal rate of interest and time is $63.

What is the simple interest?

Simple interest is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time.

Simple interest is calculated with the following formula: S.I. = (P × R × T)/100, where P = Principal, R = Rate of Interest in % per annum, and T = Time.

Given that, principal =$450, rate of interest =7% and time period =2 years.

Now, simple interest = (450×7×2)/100

= 6300/100

= $63

Therefore, interest is $63.

To learn more about the simple interest visit:

https://brainly.com/question/25845758.

#SPJ2

Find the rate of change ​

Answers

Answer:

6 to 4 or 3 to 2

Step-by-step explanation:

To sove we need to find hypatonuse which you can do by counting across the bottom whichis 4 units and across the top which is 6 units so 6/4 which is 3 to 2 or 6 to 4

-5n-3(n+2)=18
what is n?
Please show all work

Answers

Answer:

n=-3

Step-by-step explanation:

Look at the attachment below

Hope this helps (:

I need help plz and plz explain why plz

Answers

Answer:

156 minutes

Step-by-step explanation:

2 hrs=120 minutes

3/5 hr=3/5 *60=36 minutes

120+36=156 minutes

hope this helps

brainliest?

Answer:

156 minutes

Step-by-step explanation:

2*60=120

.6*60=36

36+120-156

Brainliest Appreciated!

Simplify 0.05x + 1.02x.

1.07x
1.7
0.17x

Answers

Answer:

1.07x

Step-by-step explanation:

Since they both have a x, you can simply add .05 + 1.02 to get 1.07x.

Answer:

It is 1.07x (✿◠‿◠)

if bobby was born in 05 how old would he be

Answers

Answer:

the answer is 15

Step-by-step explanation:

y = -5x– 1
y = -5x + 7

Answers

Answer:

see below

Step-by-step explanation:

y = -5x– 1

y = -5x + 7

Since they are both equal to y, we can set them equal to each other

-5x-1 = -5x+7

Add 5x to each side

-5x-1+5x= -5x+7+5x

-1 = 7

This is not true so there is no solution

The lines are parallel with different y intercepts

The answer is “There is on solution “:)

what is a frequency table

Answers

Answer: its a method or organizing your info while displaying it

Step-by-step explanation:

Which of these problem situations could best be modeled by the equation below? 52(18) + x = 1200 Debbie sold 52 boxes of fruit for $18 each plus a bonus x, for selling the boxes quickly. Find x, the bonus if Debbie sold the fruit quickly and earned $1200. Katrina earned $18 plus a weekly bonus x, for managing her money wisely each week for 52 weeks. Find x, if Katrina earned $1200. Marissa has $52 in her savings account. She earns $18 for each lawn she mows. Find x, the number of weeks she needs to mow lawns in order to have a total of $1200. Edward had a balance of $52 in the bank. He added x dollars to his account last month. This week he deposited another $18. Find x, the amount Edward deposited in the bank last month if his total savings is now $1200.

Answers

Answer:

a) Debbie sold 52 boxes of fruit for $18 each plus a bonus x, for selling the boxes quickly. Find x, the bonus if Debbie sold the fruit quickly and earned $1200.

Step-by-step explanation:

The model equation is given as:

52(18) + x = 1200

a) Debbie sold 52 boxes of fruit for $18 each plus a bonus x, for selling the boxes quickly. Find x, the bonus if Debbie sold the fruit quickly and earned $1200.

52($18) + x = $1200

52(18) + x = $1200

Option a is correct

b) Katrina earned $18 plus a weekly bonus x, for managing her money wisely each week for 52 weeks. Find x, if Katrina earned $1200.

x = weekly bonus, hence, we have the equation:

$18 + (x)52 = $1200

Option b is wrong

c) Marissa has $52 in her savings account. She earns $18 for each lawn she mows. Find x, the number of weeks she needs to mow lawns in order to have a total of $1200.

This is represented as:

$52 + $18(x) = $1200

Option c is wrong

d) Edward had a balance of $52 in the bank. He added x dollars to his account last month. This week he deposited another $18. Find x, the amount Edward deposited in the bank last month if his total savings is now $1200.

This is represented as :

$52+ $x + $18 = $1200

Option d is wrong.

Therefore, the correct statement that modelled the equation is option a

Answer ASAP!!! LOOK AT PIC FOR QUESTION.​

Answers

Answer:

A

Step-by-step explanation:

The equation starts at the coordinate point (0,0)

Answer:bdusnsbs

Step-by-step explanation:

- Find the sum of (2+4i) and (3-6i)

Answers

(2+4i )+(3-6i)

= 2 + 4i+3 -6i

= 5 - 2i

Answer:

5-2i

Step-by-step explanation:

(2+4i)+(3-6i)

2+4i+3-6i

5-2i

Please correct me if I am wrong

y=3x-5 identify y intercept within equation

Answers

Answer: -5

Step-by-step explanation: alrite so when u graph it, the line crosses -5 on the y axis

Answer: -5

Step-by-step explanation:

When written in slope intercept form, which is y=Mx+b, b is the y intercept so in this case it would be -5

you are listening to a playlist that has three hip hop songs 2 rock songs if they are a 15 more songs on this playlist and the ratio of hip hop song or rock song stayed the same how many of each type would be on this playlist ​

Answers

doing this fa points , sorry not sorry .

Solve for x. Perimeter = 126 meters

Answers

Answer:

image or context?????

Step-by-step explanation:

Idek man I’m lost whereeeee

The circle shown has a radius of 12 mm. What is the circumference of the circle?

Answers

Answer:

75.36

Step-by-step explanation:

First you would use the formula [tex]C=2\pi r[/tex] and the fill in your values, 2·3.14·12 and you will get 75.36.

(WILL MARK BRAINLIEST)
The graph of f(x) = 2 + 3 is translated to produce
the graph of g(x) = (x + 2)+ 3. In which direction
was the graph of f translated?
A. up
B. down
C. left
D. right

Answers

Answer:

down

Step-by-step explanation:

3 + 15 + 3
- 4 2
I need help figuring this out

Answers

Answer:

3+15+3-42

=18+3-42

=21-42

=-21

What is the name of the lake located at letter B on the map above? Answer is C :)

Answers

Answer:

the answer is C. lake Texoma

hope this helps

Represent each expression as a multiple of a sum of whole numbers with no common factor. 9 × (2 + 4 + 3) 4 × (4 + 7 + 12) 12 × (3 + 8 + 1) 14 × (9 + 2 + 1) 27 × (2 + 3 + 1) 22 × (4 + 3 + 1) (36 + 96 + 12) arrowRight (126 + 28 + 14) arrowRight (16 + 28 + 48) arrowRight (18 + 36 + 27) arrowRight (54 + 81 + 27) arrowRight (88 + 66 + 22) arrowRight

Answers

Answer:

(18 + 36 + 27) = 9 x (2+4+3)

(88 + 66 + 22) = 22 x (4+3+1)

(36 + 96 + 12) = 12 x (3+8+1)

(126 + 28 + 14) = 14 x (9+2+1)

(54 + 81 + 27) = 27 x (2+3+1)

(16 + 28 + 48) = 4 x (4+7+12)

Step-by-step explanation:

The equations in the solution represent each expression as a multiple of a sum of whole numbers with no common factor.

What is the algebraic expression?

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

As per the given question, the required solution would be as:

(18 + 36 + 27) = 9 × (2+4+3)

This equation represents each expression as a multiple of a sum of whole numbers with no common factor.

Similarly further equations like as :

(88 + 66 + 22) = 22 × (4+3+1)

(36 + 96 + 12) = 12 × (3+8+1)

(126 + 28 + 14) = 14 × (9+2+1)

(54 + 81 + 27) = 27 × (2+3+1)

(16 + 28 + 48) = 4 × (4+7+12)

Thus, the above equations represent each expression as a multiple of a sum of whole numbers with no common factor.

Learn more about the algebraic expression here :

brainly.com/question/21751419

#SPJ5

5 + 3 + 52 × 5 − 2 =

Answers

Answer:

164 With the parenthesis

266 without parenthesis

A truck traveling East at a velocity of 40.0 m/s comes to a complete stop. How much time it will take for the truck to stop if it decelerates at -5.0 m/s2

Answers

8 seconds I think ?.?.??.?.?.?.?.

Look at the angle shown below.
V.
Estimate the measure of the angle.

Answers

how is anyone supposed to answer this question when you don’t shown the angle

A car uses 5 gallons of gasoline to travel 97.5 miles. At this rate, how many miles can the car travel using 13 gallons of gasoline?

Answers

Answer:

253.5 miles

Step-by-step explanation:

This problem can be solved by using the concept of "ratios" and "proportions."

Step 1: Check for the "known" and "unknown" variables.

The known variables are: 5 gallons, 97.5 miles and 13 gallons while the unknown variable is the "number of miles" the car can travel using 13 gallons.

Step 2: It's time to plug the values into the proportion.

            [tex]\frac{5 gallons}{97.5 miles}[/tex] = [tex]\frac{13 gallons}{x miles}[/tex]

Step 3: Solve the proportion.

            [tex]\frac{5}{97.5}[/tex] = [tex]\frac{13}{x}[/tex]  ⇒ 5x = 1,267.5 ⇒ x = 253.5 miles

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