A sample of a radioactive isotope had an initial mass of 240 mg in the year 1995 and
decays exponentially over time. A measurement in the year 2000 found that the
sample's mass had decayed to 80 mg. What would be the expected mass of the
sample in the year 2006, to the nearest whole number?

Answers

Answer 1

Answer:

21

Step-by-step explanation:


Related Questions

Which number line model represents the expression 6+(-2)?

Answers

Number line model represented in option C represents the expression 6 + (-2).

What is Number Line?

Number line is a pictorial representation of numbers, both negative and non-negative numbers, written on a horizontal straight line within specific intervals.

Number line are used to determine basic mathematical operations like addition, subtraction, division and multiplication.

So here, we are adding the value -2 with 6.

First draw an upward arrow from 0 to 6 in order to represent that we are initiating the addition process with 6.

Then the number -2 added to 6 implies that the number 2 is actually deducting from 6.

So we draw a downward arrow to unit units from 6.

Then we get the number 4 corresponding to the point where the arrow ends.

Hence, option C is the model which represents the expression 6 + (-2).

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Which statement best describes the sequence defined by ?

The series diverges because it has a sum of 6.
The series converges because it has a sum of 3/4.
The series converges because it has a sum of 2.
The series diverges because it does not have a sum.

Answers

Answer:

well  its not c so...

Step-by-step explanation:

that'll leave you w 3 others to choose from. sorry.

The series diverges because it does not have a sum option, fourth is correct.

What is the convergent of a series?

A series is convergent if the series of its partial sums approaches a limit; that really is, when the values are added one after the other in the order defined by the numbers, the partial sums get closer and closer to a certain number.

We have an infinite series:

[tex]\rm \sum ^{\infty}_{n=1}\dfrac{3}{4}(2)^n[/tex]

[tex]\rm \sum ^{\infty}_{n=1}3(2)^{n-2}[/tex]

The above series is geometric series with first term 2 and the common ratio is 2.

Here 2>1

By the ratio test, the series is divergent.

Since the common ratio is greater than 1 the sum will be infinite.

Thus, the series diverges because it does not have a sum option, fourth is correct.

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hurry plzzzzzzzzzzzzzzzz

Answers

Answer:

D

Step-by-step explanation:

hello please help i’ll give brainliest

Answers

The answer is A the first option

Answer:

The first answer is correct.

Step-by-step explanation:

If we were to plot the numbers of the first one, we would see that they match up to the plot that is given.

Hope that this helps!

mndsndfbabndfbsdjfbhsadfbnnsd

Answers

this year, the year is 2021

need help asap! will give brainliest!

Answers

Answer:

x = 9

Step-by-step explanation:

tan 53° = 12/x

x = 12/tan 53°

x = 9.04

7. A rectangular prism has dimensions
4 feet x 3 feet X 10 feet. What
are the possible dimensions of a
horizontal or vertical cross section?

Answers

Answer:

yoi

Step-by-step explanation:

yoi

A store marked up the cost of a $40 pair of
shoes by 15%. If someone used a 15% coupon
to purchase, how much did they pay for the
shoes?

Answers

Answer:

$39.10

Step-by-step explanation:

$40 * 1.15 = $46

$46 * 0.85 = $39.10

Find the area of each triangle for #2, 3, & 4.

Answers

Answer:

6ft squared so A.

Step-by-step explanation:

Two plumbers received a job. At first, one of the plumbers worked alone for 1 hour, and then they worked together for the next 4 hours. After this 40% of the job was complete. How long would it take each plumber to do the whole job by himself if it is known that the first plumber would take 5 more hours to finish the job than the second plumber?

Answers

Answer:

Which subject is optional in the morning??

Determine the missing side of the triangle.

Answers

That is a right angled triangle so it is missing 83.5 to make it 90*.

hi, I need help on this one!

Perform the indicated operation.
a^2 - 2a+1/6 divided by (a^2-1)= _________

The denominator of the resulting fraction is

→ 6(a - 1)
→6(a + 1)
→6

Answers

9514 1404 393

Answer:

  (b)  6(a+1)

Step-by-step explanation:

Common factors are cancelled from numerator and denominator.

  [tex]\displaystyle\frac{a^2-2a+1}{6}\div(a^2-1)=\frac{(a-1)^2}{6}\cdot\frac{1}{(a-1)(a+1)}\\\\=\frac{(a-1)(a-1)}{6(a-1)(a+1)}=\boxed{\frac{a-1}{6(a+1)}}[/tex]

The denominator of the result is 6(a+1).

What is the slope-intercept equation of the line below?
HELP PLS

Answers

Answer:

y = -5/4x + 3

Step-by-step explanation:

heyy! i’ll give brainliest please help.

Answers

Answer:

The 2nd one is related to the climate

Step-by-step explanation:

HaVe An AmAzInG DaY

Drag each function to the correct location on the chart. Classify the functions as continuous and discontinuous functions. If a function is discontinuous, categorize it based on the type of discontinuity it exhibits.

Answers

Answer:

Continuous: g(x) and j(x)

Removable: h(x) and m(x)

Infinite: f(x) and i(x) and k(x)

Jump: l(x)

Step-by-step explanation:

Continuous: g(x) and j(x), Removable: h(x) and m(x), Infinite: f(x) and i(x) and k(x) & Jump: l(x)

What is the type of functions?

A function is a relation among a fixed of inputs and a fixed of permissible outputs with the belonging that each input is associated with exactly one output. permit A & B to be any non-empty units, mapping from A to B might be a feature most effective while every detail in set A has one give up handiest one picture in the set.

The eight sorts are linear, strength, quadratic, polynomial, rational, exponential, logarithmic, and sinusoidal.

One to 1 characteristic or one to at least one mapping states that each detail of one set, say Set is mapped with a completely unique element of another set, say, Set in which A and B are distinctive units.

f(x) = f(y) implies x  then f is one to at least one.

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Write a recursive rule for the sequence: 1, 7, 13, 19, ...

NO LINKS PLS

Answers

Answer:

[tex]a_n_+_1 = a_n + 6[/tex]

Step-by-step explanation:

Recursive equations use the previous term as a base for the next. Because of this, the left side of the equation needs to be a representation of the next term. The right side of the equation consists of the current term plus, minus, times, or divided by a certain number. Therefore, your answer here is [tex]a_n_+_1 = a_n + 6[/tex].

I need help ASAP. Find the length of arc FD if the radius is 94 and m

Answers

Answer:

 [tex]Arc \ length = 2\pi r \frac{\theta}{360} =[/tex] 172.3m

Which angles are vertical angles?

Answers

Answer:

<BFC and <DCA

Step-by-step explanation:

Vertical angles are the opposite angles created by intersecting lines and are congruent. Vertical angles share only a vertex

GUYS AND GIRLS PLEASE HELP ASAAPPP

Answers

Answer:

I feel like its 8, but correct me if I'm wrong I'm not 100 percent sure!

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

(0, 10)

-----------------

What is the scale figure A to Figure B?

Answers

Answer:

1 : 4

Step-by-step explanation:

p2+m; use m = 1 and p=5

Answers

11

5•2+1=11
^
10+1=11

A cube with an edge length of 10 must be filled completely. How many cubic centimeters will be needed? Type
your answer in the box.
A cm3

Answers

Answer: 1,000 cm^3

Step-by-step explanation:

Volume of cube= bhw

All sides of a cube are equivalent so 10^3= 1000

Which best describes the effect of translating the equation y=1/2x+8 up or down the y axis?

Answers

Answer:

Option B, the y-intercept changes

Explanation:

This is because, the y-intercept is located on the y-axis, which is the vertical axis, moving the graph up and down would mean moving it vertically, therefore this would result in the change of the y-intercept.

Hope this helps!

hii i’ll give brainliest please help thanks :)

Answers

Answer:

85

Step-by-step explanation:

Answer:

its 85

Step-by-step explanation:

Is this correct??????????

Answers

Answer:

looks right

Step-by-step explanation:

HELP
list all the extraneous solutions of the equation 2x/x+4 = x/x-1

Answers

Answer:

[tex]\huge\boxed{\sf Solution\ Set = \{0,6\}}[/tex]

Step-by-step explanation:

[tex]\displaystyle \frac{2x}{x+4} = \frac{x}{x-1} \\\\Cross \ Multiplying \\\\x(x+4) = 2x(x-1)\\\\x^2 + 4x = 2x^2 -2x\\\\2x^2 -x^2 = 4x + 2x\\\\x^2 = 6x \\\\x^2 -6x = 0\\\\Either,\\\\x = 0 \ \ \ \ OR \ \ \ \ x-6 = 0\\\\x = 0 \ \ \ \ OR \ \ \ \ x = 6[/tex]

Hence,

Solution Set = {0,6}

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

Step-by-step explanation:

2x x(x-1) = x x (x+4)

2x x (x-1) - x x (x+4)= 0

2x^2 - 2x - x x (x+4) = 0

2x^2 - 2x - x^2 - 4x = 0

x^2 - 2x - 4x = 0

x^2 - 6x = 0

x x (x-6) = 0

x = 0

x - 6 = 0

x = 6

The equation has 2 solutions

x1 = 0, x2 = 6

3. Find the length of time in years, given the principal of $4,800; interest rate
of 7.5%; and simple interest of $900

Answers

Answer:

2.5 years

Step-by-step explanation:

Formula for simple interest:

t = I / Pr

t = length of time

I = simple interest

P = initial amount

r = interest rate

Workers are using a nuke to carry equipment to work site. A mule can carry one bag of gravel that weighs 13 kilograms and some wooden posts. Each post weighs 4.5 kilograms.
What’s is the greatest number of wooden posts the mule can carry?
Please help

Answers

The mule can carry approximately 3 wooden posts.
Because we know that a mule can carry ≈13kgs and each pole is 4.5 kg, so we do:

13/4.5≈ 2.88888889...≈ 3 wooden posts.

Answer:

14

Step-by-step explanation:

2. Order these numbers from least to greatest: 5,0,1,-15-3,-1

Answers

Answer:

Step-by-step explanation:

- 15, -3, -1, 0 , 1, 5

Answer:

-15,-3,-1,0,1,5

Step-by-step explanation:

surface area of B is 40.32
surface area of a is 28

Answers

Answer:

Step-by-step explanation:

what's the question exactly?

Answer:

there's no question we don't understand

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