PLEASE HELP!
The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially. How many grams of the substance are left after 300 years?
a) 5039.684g
b) 2828.427g
c) 3000g
d) 2000g

Answers

Answer 1

Answer:

B) 2828.427g

Step-by-step explanation:

Hope this helps!

Answer 2
The answer is B hope I helped

Related Questions

When using inverse operations, what should you do to solve y - 7 = 10?

Answers

Answer:

17

Step-by-step explanation:

There is a SUBTRACTION symbol in the problem. So, you will do the opposite, & ADD the 2 available numbers in the equation. 10+7=17

When you replace that y with 17, the equation is correct.

Right now, Kate is 4 times as old as Tim. In four years, Katie will be 2 times as old as
Tim How old is each of them right now? How old will they be in four years?

Answers

Answer:

wth kinda question is this well how old is tim they could be 15 or 30 we don't clarify for us

Step-by-step explanation:

get smarter for asking question

Answer:

ya what the guy said above me

Step-by-step explanation:

The table shows the relationship between y, the cost to rent a boat, and x, the mount of
time the boat is rented
Boat Rental Costs
Time,
Cost
(hours) (dollars)
1
32
5
104
Which grabest represents the relationship between x and y'shown in the table?
Boat Rental
Boat Rental

Answers

Answer: A

Step-by-step explanation:It shows the correct graph

Gven f(x) = -5x+9 If F(x)=-89. find x​

Answers

Answer:

19.6 = X

Step-by-step explanation:

Plug in -89 for F(x)

Then just solve.

Get that 100.

You invest $3,635 in an investment with annual rate of return 6%. How much will the investment be worth after 8 years?

Answers

Answer:

5,379.80

Step-by-step explanation:

you multiply $3,635 times .06, and you'll get $218.10. then you multiply $218.10 times 8. you will get $1,744.80. you then add your original amount of $3,635 and the final answer is $5,379.80

what's the answer plz​

Answers

Answer:

x ≥ 33

Step-by-step explanation:

Answer: the answer is 33

need answer ASAP pls

Which is the independent variable in the graph of the U.S. population 1800-1900?

United States
straight lines
years
population

Answers

Answer: United States

Step-by-step explanation: Because threats the only independent variable the rest are dependent on others.

Write 3.0035 as a fraction.
Write the fraction as a mixed number (not an improper fraction). Make sure it is in simplest form.

Answers

The 3.0035 in the mixed number fraction should be [tex]3 \frac{7}{2000}[/tex]

Given that,

The given fraction is 3.0035

Calculation:

[tex]= 3.0035\\\\= 30035 \div 10000\\\\= 6007 \div 2000 \\\\= 3 \frac{7}{2000}[/tex]

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I need help ASAP ! Nd plz help me how to show work

Answers

Answer:

x = -3

Step-by-step explanation:

y = -x + 2

7x + 4y = -1

Subsitution method: (Substitute y)

7x + 4(-x+2) = -1

Expand.

7x + (-4x + 8) = -1

One plus and one minus make one minus. Two plus makes a plus.

7x -4x + 8 = -1

Simplify.

3x + 8 = -1

Isolate 3x.

3x = -1-8

    = -9

Find x.

x = -9 ÷ 3

  = -3

A recipe calls for “18 ounces of cream cheese with 15 ounces of sugar” How many ounces of sugar are there per ounce of cream cheese?

Answers

Answer:

1.2

Step-by-step explanation:

18 divided by 15 equals 1.2

If ABCD is a parallelogram. BC=13 and AB=5, what is the perimeter of the parallelogram?

Answers

Answer:

36

Step-by-step explanation:

In a Parallelogram , it is important to note that opposite sides are equal to each other.

We are given parallelogram ABCD.

We have sides: AB, BC, CD, AD.

Since opposite sides are equal then:

AB = CD

BC = AD

The perimeter of a parallelogram is the sum of all its sides.

In the question: BC=13 and AB=5

Hence,

AB = CD = 5

BC = AD = 13

Perimeter of Parallelogram ABCD = 5 + 5 + 13 + 13

= 36.

Need help I’ll mark brainliest

Answers

Answer:

Step-by-step explanation:

y=25x if  y is the miles and x is the time

Answer:

u just got to multiply it, for extra and faster help, use math away for ur math and its a bot so obviously it will tell you the answer and steps, hope I hekoed and plus my bday is in 6 days I'll be 13! I'm just so excited!!! I'm a girl, you could call me Che and yeah... I forgot what I was gonna say but bye and pls yall, pls be nice to me, it's close to my bday! thx.

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Step-by-step explanation:

5+2(10-4) ask question?​

Answers

Answer: It is 17

Step-by-step explanation:

5+2(10-4)

5+2(6)

5+12

17

Answer: 17

Step-by-step explanation: you just have to simplify

When using inverse operations, what should you do to solve x + 7 = 10

Answers

Answer:

10-7=3

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

Since we are doing inverse, the opposite of adding is subtracting, so 10-7 is 3.

Use the data below to determine how many days of class a student missed if he or she has a quarter grade of 40%.
Question 3 options:
A.7 days
B.4 days
C.9 days
D.1 day

Answers

Answer:7 days

Step-by-step explanation:

x/-4 = -1.1
I’m bad at one step equations so thank you if you help <3

Answers

x/-4 = -1.1

=> x = -1.1 × -4

=> x = 4.4

5
Twenty sixth graders are going on a field trip. They will be
divided into 4 equal groups to take a tour. How many
students will be in each group?

Answers

Answer:

5 students per group

Step-by-step explanation:

20 ÷ 4 = 5 students

Answer:

5

Step-by-step explanation:

20/4=5

help me for brainliest :p

Answers

Answer:

it is b

Step-by-step explanation:

when you divide exponents you subtract them. when you have parentheses you multiply the exponents. the one on the left is 6^13 and the one on the right is 6^8. 6^13 is more than 6^8.

debby collected eight times as many bags of cans as her friend .if her friend collected two thirds of a bag. how many bags did debby collect

Answers

Answer:

5 1/3

Step-by-step explanation:

I caculated 2/3 times 8

The graph of y = sin(x + 4) compared to the graph of
y = sin x has moved:

Answers

Yessss      The answer is:          

The graph of y = sin(x + 4) compared to the graph of

y = sin x has moved:     It will be more voilentary and smaller but more larger with the aixs (x,y)  

How long will it take for an investment to triple, if interest is compounded continuously at 8%?
It will take years before the investment triples.

Answers

Answer:

It will take 14 years before the investment triples

Step-by-step explanation:

Continuous Compounding

Is the mathematical limit that compound interest can reach if it was calculated and reinvested into an account's balance over a theoretically infinite number of periods.

The formula for continuous compounding is derived from the formula for the future value of a compound interest investment:

[tex]FV = PV\cdot e^{i.t}[/tex]

Where:

FV = Future value of the investment

PV = Present value of the investment

i     = Interest rate

t     = Time

It's required to find the time for an investment to triple, that is, FV = 3 PV, knowing the interest rate is i=8%=0.08.

Substituting the known values:

[tex]3PV = PV\cdot e^{i.t}[/tex]

Dividing by PV:

[tex]3 = e^{i.t}[/tex]

Taking logarithms:

[tex]\ln 3=i.t[/tex]

Solving for t:

[tex]\displaystyle t=\frac{\ln 3}{i}[/tex]

[tex]\displaystyle t=\frac{\ln 3}{0.08}[/tex]

t = 13.7 years

Rounding up:

It will take 14 years before the investment triples

It will take 37.5 years before the investment triples.

The formula for calculating the future value is expressed as:

[tex]A =Pe^{rt}[/tex]

P is the principal

r is the rate (in %)

t is the time (in years)

If the investment tripled, then A = 3P. The equation will become:

[tex]3P=Pe^{rt}\\3=e^{rt}\\ln3 =lne^{rt}\\rt = 3\\0.08t =3\\t =\frac{3}{0.08} \\t =37.5 years[/tex]

Hence it will take 37.5 years before the investment triples.

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Answers

Answer:

1514.8

Step-by-step explanation:

Answer:

1,514.8

Step-by-step explanation:

Which linear inequality and its solution set is represented by the graph?

Answers

Answer:

im pretty sure its y is more than or equal to 3x - 4

Step-by-step explanation:

The table below shows the total cost for purchasing a certain number of equally-priced concert tickets

Write an equation to describe the relationship between t, the number of tickets, and c, the total cost of tickets.

Answers

Answer:

c=55t

Step-by-step explanation:

Your answer will be c=55t

Connor and Maria are doing yard work for a neighbor. They make a total of $596.58. Since Maria works more hours than Connor, Maria gets 59% of the money. About how much​ (in whole​ dollars) does Maria make?

Maria makes about:
$300
$310
$240
$360
$410
$420

Answers

Answer:

360

Step-by-step explanation:

but 350 more accurately


Please please help me

Answers

Answer:

the answer is c. it’s commutative property

Step-by-step explanation:

12-(y•2) is the same as 12-(2•y) 2 and y are just flipped around. hope this helps!

Alyssa had to read 110 pages over the weekend. By Saturday, she had completed 60 pages. What percent did she complete? Which proportion can be used to solve? *
60/110 = x/100
x/110 = 60/100
110/60 = x/100

Answers

Answer:

i believe the answer is c or 110/60=x/100

Step-by-step explanation:

The coordinates of both the pre-image and image of quadrilateral JKLM are listed in the table
below.
Which rule best represents this dilation?
A- (x, y) -> (4/11 x, 4/11 y)
B- (x,y) -> (3/22 x, 3/22 y)
C- (x, y) -> (11/4 x, 11/4 y)
D- (x, y) -> (22/3 x, 22/3 y )

Answers

Answer:

Option C.

Step-by-step explanation:

From the table attached,

Pre-image coordinates J(-8, 2) → Image coordinates J'(-22, 5.5)

J(-8, 2) → J'(-22, 5.5)

Since, rule for the dilation of a point is,

(x, y) → (kx, ky) [Here k = scale factor of dilation]

Therefore, kx = -22

k(-8) = -22

k = [tex]\frac{-22}{-8}[/tex]

k = 2.75

So the scale factor should be 2.75

From the given options,

Option A.

(x, y) → [tex]\frac{4}{11}(x, y)[/tex]

       → 0.36(x, y)

But value of k should be 0.36

Therefore, Incorrect option.

Option B.

(x, y) → [tex]\frac{3}{22}(x, y)[/tex]

       → 0.14(x, y)

k = 0.14

But the value of k should be 2.75

Incorrect option.

Option C.

(x, y) → [tex]\frac{11}{4}(x, y)[/tex]

       → 2.75(x, y)

k = 2.75

Therefore, this option is correct.

Option D.

(x, y) → [tex]\frac{22}{3}(x, y)[/tex]

       → 7.33(x, y)

k = 7.33

But the scale factor should be 7.33

Incorrect option.

An estate of ​$485,000 is left to three siblings. The eldest receives 3 times as much as the youngest. The middle sibling receives ​$13,000 more than the youngest. How much did each​ receive?

Answers

Answer:

Step-by-step explanation:

the youngest received 94,200

the middle received 107,200

the eldest received 283,600

Step-by-step explanation:

Given parameters:

Worth of the estate  = $485000

Unknown:

Amount received by each sibling = ?

Solution:

Let the amount received the eldest  = e

                                                 middle  = m

                                                 youngest  = y

                  e  = 3y

                 m = y + 13000

so;

      e + m + y  = 485000

      3y + y + 13000 + y  = 485000

         5y  = 485000 - 13000

         5y  = 472000

           y  = $94400

Eldest  = 3y  = 3 x 94400 = $283200

Middle  = $94400 + $13000 = $107400

Youngest  = $94400

Your current CD matures in a few days. You would like to find an investment with a higher rate of return than the CD. Stocks historically have a rate of return between 10% and 12%, but you do not like the risk involved. You have been looking at bond listings in the newspaper. A friend wants you to look at the following corporate bonds as a possible investment. A 5-column table with 2 rows. Column 1 is labeled Bond with entries A B C 7 and one-half 15, X Y Z 7 and three-fourths 15. Column 2 is labeled current yield with entries 7.5, 8.4. Column 3 is labeled volume with entries 128, 17. Column 4 is labeled Close with entries 104 and three-fourths, 100 and one-half. Column 5 is labeled net change with entries blank, + one-fourth. If you buy five of the XYZ bonds with $8 commission for each, how much will it cost? a. $5025 b. $5065 c. $1005 d. $1045

Answers

Answer:

Answer is B. 5065

Step-by-step explanation:

Edge says so

Your current CD matures in a few days. You would like to find an investment with a higher rate of return than the CD. Stocks historically have a rate of return between 10% and 12%, but you do not like the risk involved. You have been looking at bond listings in the newspaper. A friend wants you to look at the following corporate bonds as a possible investment.

What was the price of the XYZ bond on the previous day?

Edge says its C. 100 1/4

Your current CD matures in a few days. You would like to find an investment with a higher rate of return than the CD. Stocks historically have a rate of return between 10% and 12%, but you do not like the risk involved. You have been looking at bond listings in the newspaper. A friend wants you to look at the following corporate bonds as a possible investment.

What was the price of the ABC bond on the previous day?

Edge says its D. 104 3/4

Answer:B

Step-by-step explanation:

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